Shadow Payroll vs Split Payroll: Which Creates the Lower Employer Cost?

Ivvora Research | October 2026

A US company sends an employee earning $120,000 annually to work in Colombia.

The company has two ways to deliver the employee’s salary.

Under the first arrangement, the employee continues receiving their salary through US payroll. A Colombian shadow payroll records the compensation and administers applicable host-country reporting and withholding obligations.

Under the second arrangement, the company divides the employee’s salary between two payment channels. Part is paid through US payroll and the remainder through a Colombian payroll.

Both arrangements can support international employment. Both require careful compliance planning.

But which costs the employer less?

In Ivvora’s illustrative $120,000 employee model, shadow payroll costs $196,678 annually, compared with $199,570 for split payroll.

The annual difference is $2,892.

It does not come from a lower salary, a reduction in Colombian statutory contributions, or a different employee tax rate.

The difference comes from payroll administration, foreign-exchange execution, payment processing and reconciliation.

Importantly, split payroll and shadow payroll are not mutually exclusive.

A company using split payroll may still need shadow reporting to account for compensation paid through the other country.

That distinction changes how the employer-cost comparison should be constructed.

Instead of comparing two payroll labels, this study compares two methods of delivering the same $120,000 compensation package while holding the underlying employment and tax assumptions constant.

The analysis covers eight dimensions: fund flow, tax withholding, social contributions, foreign exchange, dual payroll administration, employee cash flow, employer cost and reconciliation burden.

It also calculates when a split-payroll arrangement could become cheaper.

Executive Findings: Shadow Payroll vs Split Payroll at $120,000

Ivvora modeled an employee working in Colombia while retaining an assumed US employment structure.

The first scenario pays all gross salary through US payroll and uses Colombian shadow reporting.

The second scenario pays 60% of gross salary through US payroll and 40% through a Colombian local payment channel, with reporting of the entire compensation package as required.

The model assumes that both structures are legally supportable, that the employee has the same underlying compensation and employment obligations, and that split payroll does not create a second employment contract.

Annual employer-cost comparison

Cost measure	Shadow payroll	Split payroll
Gross annual salary	$120,000	$120,000
Modeled employer contributions and statutory benefits	$66,406	$66,406
Payroll administration and reconciliation	$6,600	$9,600
Mobility tax preparation	$3,000	$3,000
Employer-funded FX conversion fees	$432	$144
Payment and settlement fees	$240	$420
Total annual employer cost	$196,678	$199,570
Cost above gross salary	$76,678	$79,570

Source: Ivvora original illustrative financial model, October 2026. All amounts in USD. The contribution scenario is conditional, and the service and FX rates are explicitly assumed rather than presented as verified provider quotations.

The most important findings are:

1. Shadow payroll is $2,892 cheaper in the base case.

The cost advantage comes from lower assumed operating expenses, not lower mandatory contributions.

2. Split payroll reduces the modeled FX execution expense by $288.

However, the FX saving is smaller than the additional administration and reconciliation expenditure.

3. Dividing the salary does not automatically divide the taxable salary.

The host-country reporting and contribution base must follow the applicable law, regardless of which bank account receives the compensation.

4. Split payroll may improve employee cash flow without reducing employer taxes.

Receiving Colombian pesos directly can make local living expenses easier to manage, but that convenience has an operational cost.

5. The break-even depends on administrative efficiency.

Under the base assumptions, split payroll needs an annual operating-cost improvement of $2,892 to match shadow payroll.

6. The choice can reverse.

If the employer can operate split payroll through an integrated provider that reduces administration and reconciliation charges by $3,000 annually, split payroll becomes $108 cheaper under the same assumptions.

These findings are specific to the disclosed scenario, not universal claims about international payroll pricing.

1. The Fundamental Difference: Reporting Compensation Versus Paying Compensation

The first distinction is operational.

Shadow payroll is principally a reporting and compliance mechanism.

Split payroll is principally a compensation payment arrangement.

The two concepts describe different functions and can operate together.

Shadow payroll

Under a conventional home-payroll and host-shadow arrangement:

• The home payroll pays the employee.
• The host-country payroll records compensation relevant to its payroll obligations.
• Applicable host tax and social contribution calculations are performed.
• Required amounts are remitted through an authorized process.
• The host shadow payroll does not pay the employee a second salary.

The Global Payroll Association describes shadow payroll as a parallel reporting process used when compensation is paid through one country but must also be accounted for in another.

Source: Global Payroll Association, The Shadow Payroll Effect.

Split payroll

Under split payroll:

• Part of the employee’s salary is paid through the home-country payroll.
• Another portion is paid through the host-country payroll.
• The employer reconciles the two payments against the employee’s total agreed compensation.
• Each relevant payroll must account for the remuneration and deductions required under applicable law.
• Shadow entries may still be necessary for amounts physically paid in the other country.

For example, an employee may receive 60% of salary in dollars and 40% in Colombian pesos.

That does not necessarily mean 60% is taxable in the US and only 40% is taxable in Colombia.

Payment allocation and tax sourcing are separate questions.

The eight-dimension comparison

Dimension	Shadow payroll	Split payroll
Fund flow	Salary principally paid through home payroll	Salary paid through home and host channels
Tax withholding	Host reporting and remittance coordinated with home payroll	Deductions coordinated across two paying payrolls
Social contributions	Determined by applicable coverage and employment rules	Same rules for an otherwise identical employment arrangement
FX exposure	Often concentrated in employee conversions or employer-funded local transfers	Employer directly funds local-currency payroll
Dual payroll administration	Home payment payroll plus host shadow reporting	Two paying payrolls, potentially with additional shadow entries
Employee cash flow	Employee may need to convert money for host-country expenses	Employee receives some local-currency income directly
Employer cost	Generally driven by common employment costs plus reporting and payment fees	Common employment costs plus payment, administration and reconciliation fees
Reconciliation burden	Reconcile home compensation with host reporting	Reconcile two actual payment streams, full reportable income and deductions

The distinction is crucial because an employer cannot determine the cheaper arrangement merely by comparing the price of shadow reporting with the price of local payroll software.

The full cost depends on which payroll processes are duplicated, which services are consolidated and how money moves.

2. The Ivvora Scenario: A $120,000 Engineer Moving From the US to Colombia

Consider a fictional company, Atlas Systems.

Atlas employs a software engineer earning $120,000 annually.

The engineer is assigned to Bogotá for 12 months.

Atlas wants to preserve the employee’s existing compensation and compare two legally supportable payroll delivery structures.

The company is not evaluating an EOR or permanent transfer in this study.

Those are separate employment-structure decisions.

Core assumptions

Variable	Model assumption
Home country	United States
Host country	Colombia
Annual gross salary	$120,000
Monthly gross salary	$10,000
Assignment duration	12 months
Gross salary payment split	60% US, 40% Colombia in split scenario
Currency translation	USD 1 = COP 4,000
Colombian salary treatment	Ordinary salary
Occupational risk classification	Class I, assumed
Income and contributions	Calculated on applicable full earnings, not merely local cash paid
Employer-funded local-currency net cash need	$36,000 annually
Employment arrangement	Same underlying assumed employment relationship in both alternatives

The exchange rate is a constant modeling assumption, not a representation of the actual October 2026 market rate.

What the comparison deliberately holds constant

To isolate payroll structure rather than unrelated employment choices, the model holds constant:

• Gross compensation
• Employee work location and duties
• Underlying employer contribution treatment
• Applicable statutory employment benefits
• Employee annual withholding assumptions
• Employer immigration and employment responsibilities
• Employee net cash target
• Annual mobility tax-preparation requirements

The model does not assume that changing the payment route lawfully changes an employee’s tax residence, social security system, taxable salary or legal employer.

Both arrangements also require appropriate Colombian compliance support.

If either arrangement is legally unavailable for the actual facts, it must be excluded rather than compared solely on cost.

3. First Calculate the Costs That Do Not Change

The most important methodological decision is to calculate the common employment cost before adding the differences between payroll structures.

For the Colombia scenario, Ivvora uses an explicitly defined full-contribution employer-cost case.

Colombia’s modeled employer contributions

The 2026 minimum wage used in this analysis is COP 1,750,905 monthly, established under Decree 159 of 2026.

At the modeled exchange rate, a $120,000 employee earns the equivalent of COP 40,000,000 monthly.

That is above ten times the 2026 statutory minimum wage and below the standard 25-SMMLV contribution ceiling.

For the defined full-contribution scenario, the employer contribution assumptions are:

Employer contribution	Rate	Annual cost on $120K
Health	8.500%	$10,200
Pension	12.000%	$14,400
Occupational risks, Class I	0.522%	$626
Family compensation fund	4.000%	$4,800
SENA	2.000%	$2,400
ICBF	3.000%	$3,600
Total	30.022%	$36,026

Official sources:

• Colombia, Decree 159 of 2026
• Ventanilla Única Empresarial, Employer Contribution Rates
• Colombian Tax Statute, Article 114-1

These amounts assume the contributions are legally due on the modeled base and that the employer is responsible for them.

They are not a determination that every US assignee must pay Colombian pension contributions. Qualifying foreign pension coverage may change that liability, and special employment or payroll facts may change other obligations.

Colombian ordinary-salary employment benefits

The model also assumes that the employee is entitled to the monetary obligations associated with an ordinary Colombian salary arrangement.

Benefit	Modeled annual cost
Prima de servicios	$10,000
Cesantías	$10,000
Interest on cesantías	$1,200
Total	$21,200

The calculation assumes a full year of stable ordinary salary and a qualifying Colombian employment obligation.

Paid annual vacation is not automatically added as a second salary payment because the model already includes twelve months of salary.

An employer should separately account for unused leave accruals, termination settlements or replacement staffing where applicable.

Source: Colombian Labor Regulations, Decree 1072 of 2015.

US employer payroll contributions

For the purpose of this scenario, assume the employee’s entire $120,000 salary remains covered by ordinary US employer Social Security and Medicare taxes.

Under 2026 IRS rules, the employer Social Security rate is 6.2% on covered earnings up to the $184,500 wage base.

The employer Medicare rate is 1.45% without an equivalent wage ceiling.

Therefore:

$120,000 × 7.65% = $9,180

Source: IRS, 2026 Form 941 Instructions.

This US coverage assumption is conditional.

The actual result must be verified against the employee’s employer, citizenship or residence facts, employment arrangement and applicable exceptions.

The United States does not list Colombia among its totalization-agreement countries as of October 2026, but Colombian domestic rules can still affect pension participation for foreign workers.

Source: US Social Security Administration, Status of Totalization Agreements.

The shared employer-cost baseline

Component	Annual cost
Gross salary	$120,000
Colombian employer contributions	$36,026
Colombian statutory monetary benefits	$21,200
US employer FICA	$9,180
Shared modeled employer cost	$186,406

This is the common starting point for the two scenarios.

It excludes the costs of operating the payroll structures.

It also excludes any incremental tax equalization, allowances, housing, extraordinary employer-paid taxes and related contribution gross-ups. These would need to be added to both options where applicable.

The essential point: neither payment arrangement should be given an artificial statutory tax saving merely because salary is divided between countries.

4. Option A: The $120,000 Shadow Payroll Cash Flow

Under Option A, Atlas pays the entire contractual salary through its US payroll arrangement.

A Colombian shadow payroll records the compensation needed for host-country reporting.

The company also offers an employee cash-access service for expenses in Colombia.

Annual compensation flow

Transaction	Amount
Gross salary funded through US payroll	$120,000
Illustrative employee-side payroll deductions and withholding	($30,000)
Employee net compensation	$90,000
Net funds retained in USD	$54,000
Net funds converted for Colombian use	$36,000
Additional salary paid by Colombian shadow payroll	$0

The $30,000 withholding figure is a synthetic routing assumption.

It is not a calculation of actual US or Colombian employee income tax or social contributions.

It represents the combined illustrative employee-side deductions managed across the legally applicable payroll and settlement process.

Monthly payment flow

Each month:

1. US payroll processes $10,000 in gross compensation.
2. The coordinated process accounts for $2,500 of modeled employee-side deductions.
3. The employee has $7,500 of net monthly compensation.
4. $4,500 remains available through the US payment channel.
5. $3,000 is converted for use in Colombia.
6. The Colombian shadow payroll records the applicable host-country compensation and administers the corresponding reporting and tax calculation.

The conversion of $3,000 of existing employee net compensation does not create an additional $3,000 salary expense.

It changes the destination and currency of money the employee is already entitled to receive.

The Colombian shadow record

Under the full-year Colombia-reporting assumption, the host payroll may need to account for the entire $120,000 of relevant salary rather than only the amount the employee converts into pesos.

It must also evaluate reportable bonuses, allowances, benefits and other taxable employment income.

The fact that the employee receives the salary through US payroll does not by itself make the remuneration exempt from Colombian reporting or contributions.

The cost of operating Option A

Ivvora assumes the following annual service costs:

Operational expense	Annual cost
Home-country paying payroll	$1,200
Colombian shadow payroll administration	$3,600
Cross-border compensation reconciliation	$1,800
Mobility tax preparation	$3,000
Employer-funded FX cost	$432
Transfer and settlement fees	$240
Total operating cost	$10,272

All service charges and transaction spreads are model assumptions, not actual vendor quotations.

The employer-funded FX cost is calculated as:

$36,000 × 1.2% = $432

The transfer fee assumption is:

$20 × 12 months = $240

Total Option A employer cost

Shared employment cost: $186,406.40

Operating cost: $10,272

Total annual shadow payroll employer cost: $196,678.40

This is the benchmark for evaluating split payroll.

5. Option B: The $120,000 Split Payroll Cash Flow

Under Option B, Atlas uses two paying channels.

The employee receives 60% of gross salary through US payroll and 40% through Colombian payroll.

Salary allocation

Salary component	US payroll	Colombian payroll	Total
Annual gross salary	$72,000	$48,000	$120,000
Monthly gross salary	$6,000	$4,000	$10,000
Gross allocation	60%	40%	100%

The allocation changes which payroll physically pays the salary.

It does not increase the total contractual gross salary.

Illustrative employee-side deductions

For cash-flow comparison, Ivvora assumes:

Cash-flow component	US channel	Colombian channel	Total
Annual gross paid	$72,000	$48,000	$120,000
Modeled employee-side deductions	($18,000)	($12,000)	($30,000)
Employee net cash	$54,000	$36,000	$90,000

The allocation of deductions is an operational illustration, not a conclusion about legal withholding rates.

Actual withholding may need to be coordinated differently and may apply to the same income in more than one jurisdiction, subject to available relief.

Colombian local payment

At the fixed modeled rate of COP 4,000 per USD:

Annual Colombian gross disbursement:

$48,000 × COP 4,000 = COP 192,000,000

Monthly Colombian gross disbursement:

COP 16,000,000

Illustrative annual host-channel deductions:

$12,000 × COP 4,000 = COP 48,000,000

Annual Colombian net payment:

COP 144,000,000

That is equivalent to $36,000 at the modeled exchange rate.

The employee therefore has the same modeled annual net cash allocation as Option A:

• $54,000 through the US payment channel
• $36,000 equivalent through the Colombian channel

But instead of converting net dollars through a separate employee payment service, Atlas funds the local salary payment as part of Colombian payroll.

Does the Colombian payroll report only $48,000?

Not necessarily.

If the applicable rules require reporting of the full $120,000, the Colombian payroll cannot ignore the $72,000 paid through the US channel.

It may need a shadow entry for the portion paid abroad.

The host payroll could therefore contain:

Reporting component	Amount
Gross salary actually paid by Colombian payroll	$48,000
Additional foreign-paid compensation reported through shadow records	$72,000
Total compensation reconciled for host reporting	$120,000

The $72,000 shadow entry does not create another payment.

This is the key reason split payroll does not eliminate shadow payroll.

It can combine local cash disbursement with shadow reporting of compensation delivered elsewhere.

Option B operating costs

Operational expense	Annual cost
US paying payroll	$1,200
Colombian paying payroll, including foreign-pay reporting	$5,400
Dual-payment and statutory reconciliation	$3,000
Mobility tax preparation	$3,000
Employer-funded FX execution cost	$144
Intercompany funding and settlement fees	$420
Total operating cost	$13,164

The FX execution assumption is:

$36,000 × 0.4% = $144

The settlement-fee assumption is:

$35 × 12 months = $420

The split arrangement receives a lower modeled FX conversion rate because the employer is assumed to use a more efficient institutional settlement process.

That is a commercial assumption, not a guarantee that split payroll always has better FX pricing.

Total Option B employer cost

Shared employment cost: $186,406.40

Operating cost: $13,164

Total annual split payroll employer cost: $199,570.40

Option B costs $2,892 more than Option A under the baseline assumptions.

6. The Full Cost Waterfall: Where the $2,892 Difference Comes From

The most informative comparison is not a single final total.

It is the cost bridge between the two options.

Complete employer-cost waterfall

Cost component	Shadow payroll	Split payroll	Split minus shadow
Base salary	$120,000	$120,000	$0
Colombian employer contributions	$36,026	$36,026	$0
Colombian statutory monetary benefits	$21,200	$21,200	$0
US employer FICA	$9,180	$9,180	$0
Home paying payroll	$1,200	$1,200	$0
Host payroll administration	$3,600	$5,400	+$1,800
Reconciliation	$1,800	$3,000	+$1,200
Mobility tax preparation	$3,000	$3,000	$0
FX execution	$432	$144	−$288
Payment and settlement fees	$240	$420	+$180
Total employer cost	$196,678	$199,570	+$2,892

Ivvora original model. Unrounded totals are $196,678.40 and $199,570.40.

This reveals the source of the difference.

Split payroll adds $1,800 in host payroll administration.

It adds $1,200 in reconciliation.

It adds $180 in payment and settlement fees.

It saves $288 in FX conversion.

The net effect is:

$1,800 + $1,200 + $180 − $288 = $2,892

The extra employer cost is a payroll operating difference.

It is not an extra employee salary.

It is not a second set of statutory contributions.

It is not the result of taxing the employee twice in the cost model.

That separation is essential for accurate employer-cost comparisons.

7. Why Split Payroll Does Not Automatically Reduce Income Tax

A common but incorrect approach is to divide the salary into two payment streams and assume that each country taxes only the portion physically paid there.

Consider the modeled $120,000 employee.

Under split payroll:

• US payroll pays $72,000.
• Colombian payroll pays $48,000.

That 60/40 payment allocation does not establish a 60/40 taxable-income allocation.

The employee’s income-tax position depends on applicable domestic law, residence status, work location, sourcing rules and available relief.

A country may require reporting or taxation of amounts paid outside its territory.

For example, US federal tax rules continue to apply to US citizens and certain residents working abroad, subject to the relevant exclusions, credits and other provisions.

Source: IRS, Persons Employed Abroad by a US Person.

The UK also provides an instructive example of how payroll obligations can extend to compensation paid outside the host payroll. HMRC’s internationally mobile employee guidance distinguishes the underlying taxable employment income from the mechanics of particular payroll payments.

Source: HMRC, Globally Mobile Employees and PAYE.

Although the statutory rules differ by country, the modeling principle is the same.

Where compensation is paid does not, by itself, determine where it is taxable.

Why split payroll can create duplicate withholding

The same employee may have withholding obligations in both countries.

If the payroll systems operate without coordination, an employee can experience excessive or duplicated payroll deductions even when the final tax treatment would provide some form of relief.

For example, suppose the coordinated model requires $30,000 in annual employee-side payroll deductions.

Now assume the home payroll mistakenly withholds the entire modeled $30,000 while the host payroll separately withholds another $12,000.

The employee would have $42,000 withheld during the year.

That does not establish a $42,000 final tax liability.

It establishes a possible cash-flow problem requiring reconciliation or recovery.

If the employer guarantees the employee a particular net salary, it may need to provide additional temporary funding.

The employer can therefore face a real financing cost without any lawful reduction or increase in the underlying final income-tax liability.

Tax equalization is a separate issue

Where the employer promises to protect the employee’s net compensation, it may also fund tax equalization.

The employer’s cost depends on the agreement, relevant employee tax liabilities, credits, exemptions and taxable treatment of employer-paid taxes.

Split payroll does not automatically reduce those obligations.

A tax-equalization reserve should be added only after calculating the tax consequences of the actual assignment.

It should not be estimated by treating the home and host payment percentages as separate tax jurisdictions.

8. Social Contributions: The $14,400 Colombian Pension Error

Colombia provides a useful example of why payroll routing and contribution liability must be separated.

In the base model, the employer pension contribution is:

$120,000 × 12% = $14,400

Suppose the company splits the $120,000 salary so that only $48,000 is physically paid in Colombia.

A naive calculation might apply the 12% Colombian employer pension rate only to the $48,000 host payment.

That would produce:

$48,000 × 12% = $5,760

The apparent pension saving would be:

$14,400 − $5,760 = $8,640

But that saving is not established by the payment split.

If the applicable Colombian contribution rules require the full $120,000 of ordinary salary to enter the contribution base, using the $48,000 cash payment would understate the modeled employer contribution by $8,640.

The correct comparison

Pension calculation	Shadow payroll	Split payroll
Total annual compensation	$120,000	$120,000
Colombian gross cash payment	$0	$48,000
Applicable full salary contribution base, if required	$120,000	$120,000
Employer pension rate	12%	12%
Employer pension contribution	$14,400	$14,400

This table assumes the full salary is subject to Colombian pension contributions.

That legal premise needs to be verified for the individual employee.

The foreign pension coverage exception

Colombia’s pension framework contains provisions addressing foreign workers who remain covered by pension systems abroad.

Colpensiones explains that qualifying foreign workers may have different affiliation requirements where they are covered by a pension regime in another country.

Sources:

• Colpensiones, Pension Affiliation Questions
• Colombian Law 100 of 1993

If the employee qualifies for a relevant Colombian pension exemption, both payroll delivery options may need a lower employer contribution assumption.

The exemption is a legal coverage issue.

It is not a benefit created by split payroll.

Generalizing beyond Colombia

Across international assignments, the correct social contribution calculation depends on applicable domestic laws, international coordination agreements, employee coverage and contribution bases.

For example, US social security totalization agreements can prevent dual coverage in qualifying cases.

That protection is based on the agreement and worker’s facts, not simply which payroll disburses the salary.

Source: US Social Security Administration, International Agreements.

An employer should calculate social contribution coverage first and salary payment routing second.

9. The Colombian Ten-Minimum-Wage Threshold: Why the Local Payment Can Be Misleading

The $120,000 scenario has another Colombia-specific feature.

At the fixed modeled exchange rate:

$120,000 × COP 4,000 = COP 480,000,000 annually

Monthly equivalent:

COP 40,000,000

Colombia’s 2026 ten-SMMLV threshold is:

COP 1,750,905 × 10 = COP 17,509,050 monthly

For qualifying employers and employees earning below that threshold, Article 114-1 can provide exemptions from employer health, SENA and ICBF contributions.

In this scenario, the employee’s full modeled monthly salary is COP 40,000,000, well above the threshold.

The potential error under split payroll

The host cash-paying portion is:

$48,000 / 12 = $4,000 per month

Converted into COP:

$4,000 × 4,000 = COP 16,000,000 monthly

That local cash payment is below ten SMMLV.

But the full modeled monthly salary is COP 40,000,000.

If all compensation counts as relevant remuneration under the applicable exemption and employment arrangement, the employer cannot claim that the employee earns less than ten SMMLV merely because only COP 16,000,000 is physically paid by the Colombian payroll.

The financial exposure

The combined employer health, SENA and ICBF contribution rates are:

8.5% + 2% + 3% = 13.5%

Applied to the modeled $120,000 salary:

$120,000 × 13.5% = $16,200

A model that incorrectly grants the exemption could understate annual employer cost by $16,200.

That is more than five times the $2,892 operating-cost difference between the two payroll arrangements.

This demonstrates why legal classification and compensation aggregation matter more than the payment split itself.

Sources: Article 114-1, Colombian Tax Statute and SENA, Article 114-1 Interpretation.

10. The FX Comparison: When Split Payroll Saves Money

Foreign-exchange costs are one of the few categories that can genuinely change because of where salary cash is delivered.

But there are two separate FX exposures.

The first is the cost of converting or transferring currency.

The second is the economic effect of exchange-rate movements on obligations denominated in another currency.

These must be modeled independently.

Scenario A: Employee net salary converted for Colombia

The company pays the salary through US payroll.

The employee needs $36,000 equivalent for Colombian living expenses.

Atlas agrees to fund the conversion cost.

The modeled retail conversion spread is 1.2%.

Annual FX cost:

$36,000 × 1.2% = $432

Scenario B: Employer funds Colombian payroll

The employee receives the same $36,000 equivalent of local net cash through Colombian payroll.

Atlas uses a modeled institutional FX execution rate of 0.4%.

Annual FX cost:

$36,000 × 0.4% = $144

FX saving

$432 − $144 = $288

Split payroll has a lower assumed FX execution cost.

But that saving alone does not determine the cheapest employer structure.

Why the source of FX exposure matters

In the shadow scenario, Atlas has agreed to protect the employee from conversion charges.

Without that agreement, the employee might bear the $432 cost personally.

In that case, the employer’s direct payroll expense would be lower, but the employee would receive less local purchasing power.

The employer should not compare one scenario where it funds FX fees with another where the employee funds them without explicitly recognizing the difference.

Employee experience and employer expenditure need a common compensation policy.

FX conversion cost is not the same as currency volatility

Suppose Atlas agrees to pay the host portion in a fixed amount of Colombian pesos.

If the peso appreciates against the dollar, the USD cost of that fixed COP payment can rise.

For example, assume a host payroll obligation initially worth $48,000 annually.

If the USD cost of the same fixed COP obligation rises by 10%, the annual USD cost increases to:

$48,000 × 1.10 = $52,800

The increase is $4,800.

That is separate from the $144 modeled FX execution fee.

Conversely, a weakening peso can reduce the USD cost of a fixed COP obligation.

If the salary is contractually denominated in USD and translated into COP at each payday, the financial allocation of FX movements may be different.

Therefore, an employer considering split payroll must know whether the local amount is:

• Fixed in COP
• Fixed in USD and converted to COP
• Adjusted through a currency-protection policy
• Subject to an agreed exchange-rate mechanism

The employee’s contract currency can matter more than the payment channel.

11. The Break-Even Formula: When Does Split Payroll Become Cheaper?

The baseline model makes it possible to calculate the exact cost threshold.

Start with the components that differ between the two arrangements.

Difference in annual costs before FX

Component	Additional cost of split payroll
Host payroll administration	+$1,800
Reconciliation	+$1,200
Payment and settlement fees	+$180
Total incremental operating cost before FX	+$3,180

Split payroll saves $288 in FX execution.

Therefore:

$3,180 − $288 = $2,892

The break-even equation

Let:

• F = Additional annual split-payroll administration, reconciliation and settlement expenses
• N = Annual net compensation converted into host currency
• Rₛ = Shadow payroll conversion spread
• Rₚ = Split payroll conversion spread

Then:

Incremental split payroll cost = F − N × (Rₛ − Rₚ)

For the Ivvora base case:

F = $3,180

N = $36,000

Rₛ = 1.2%

Rₚ = 0.4%

Calculation:

$3,180 − [$36,000 × (1.2% − 0.4%)]

= $3,180 − $288

= $2,892

The break-even point occurs when the FX savings equal the additional operating expenses.

How much local-currency salary would be needed?

Holding the modeled fees and conversion spreads constant:

Break-even conversion volume = $3,180 / 0.008

= $397,500 annually

That exceeds the employee’s entire $120,000 gross salary.

It also exceeds the modeled $90,000 annual net compensation.

Therefore, under these particular pricing assumptions, increasing the employee’s local-currency payment allocation alone cannot make split payroll cheaper.

The service-cost difference is too large for the assumed 0.8-percentage-point FX advantage to overcome.

This conclusion depends on the assumptions. It is not a universal rule about split payroll.

12. Sensitivity Test: What Happens When the Employee Needs More Local-Currency Cash?

The base case assumes $36,000 of annual local-currency net cash.

But employee needs vary.

Some internationally assigned employees keep most of their savings in their home country.

Others pay rent, school fees, living expenses and other obligations almost entirely in the host country.

To isolate the effect of FX exposure, Ivvora keeps the service fees unchanged and varies only the annual converted net amount.

Annual local-currency net cash	FX saving from split payroll	Split payroll additional total cost
$0	$0	$3,180
$18,000	$144	$3,036
$36,000	$288	$2,892
$54,000	$432	$2,748
$90,000	$720	$2,460

The final row assumes all modeled net compensation is converted. The underlying payroll processing fees remain unchanged for the sensitivity test.

As the local-currency cash requirement rises, split payroll becomes relatively more attractive.

But it does not become cheaper under the baseline administration-cost assumptions.

Even if all $90,000 of modeled net compensation is converted, the annual FX saving would be only $720.

That does not overcome the $3,180 additional operating expense before FX.

This produces an actionable insight.

If the main reason for split payroll is cheaper currency conversion, the employer should calculate the annual conversion volume needed to recover the additional payroll costs before changing the payment structure.

13. What If Split Payroll Uses a More Efficient Provider?

The baseline assumes:

• $5,400 for Colombian paying payroll and associated foreign-paid compensation reporting
• $3,000 for dual-payment reconciliation

Together, those activities cost $8,400 annually.

But providers do not necessarily charge the same amount.

An integrated service might process both payroll streams and their reporting through one system, reducing manual reconciliation.

Assume Atlas obtains a proposal that reduces split-payroll administration and reconciliation charges by $3,000 annually.

Revised split payroll cost

Original split payroll total:

$199,570.40

Annual operating-cost reduction:

$3,000

Revised total:

$196,570.40

Compare with shadow payroll:

$196,678.40

Split payroll is now $108 cheaper.

Provider efficiency sensitivity

Annual reduction in split administration and reconciliation charges	Revised split total	Difference versus shadow
$0	$199,570	+$2,892
$1,000	$198,570	+$1,892
$2,000	$197,570	+$892
$2,892	$196,678	$0
$3,000	$196,570	−$108
$4,000	$195,570	−$1,108

The exact break-even operating-cost reduction is $2,892.

This shows why provider integration matters.

Split payroll is not inherently more expensive.

It is more expensive when the additional administration, payment and reconciliation costs exceed any offsetting FX or operational savings.

A company with integrated payroll infrastructure may face a different cost equation from a company relying on several unrelated providers.

14. The Reconciliation Burden: What Must Match Every Month?

One reason split payroll can cost more is that it creates two actual salary payment streams.

But both arrangements require cross-border reconciliation.

The difference is what the payroll team has to reconcile.

Shadow payroll reconciliation

For the $120,000 employee, the monthly control should establish:

Reconciliation field	Monthly expected value
Contractual gross salary	$10,000
Gross paid by home payroll	$10,000
Gross paid by host shadow payroll	$0
Gross compensation recognized for relevant host reporting	$10,000
Duplicate salary payment	$0

The payroll team then verifies applicable taxes, contributions, benefits and adjustments.

The key risk is whether all reportable compensation has been included.

For example, the home payroll may pay a bonus while the host payroll team receives only base salary information.

The host payroll record would then be incomplete.

Split payroll reconciliation

The split arrangement requires an additional cash-payment reconciliation.

Reconciliation field	Monthly expected value
Contractual gross salary	$10,000
US gross cash payroll	$6,000
Colombian gross cash payroll	$4,000
Combined gross cash compensation	$10,000
Compensation recognized for relevant host reporting	$10,000
Additional foreign-paid compensation recognized through host shadow entry	$6,000
Duplicate gross payment	$0

This creates more moving parts.

The host payroll must distinguish locally paid salary from foreign-paid salary recorded only for reporting.

The home payroll must correctly account for the host disbursement to avoid paying the employee twice.

Both payroll teams must also reconcile the applicable withholding and social contribution bases.

The monthly control equation

For the modeled split arrangement:

US actual gross pay + Colombian actual gross pay = Total contractual gross salary

$6,000 + $4,000 = $10,000

Separately:

Host reportable gross income = Host-paid reportable income + Foreign-paid reportable income + Other host-reportable compensation

$4,000 + $6,000 + $0 = $10,000

The second equation is a reporting calculation.

It must not create another $6,000 payment.

Why bonuses create additional difficulty

Suppose Atlas pays a $20,000 annual bonus through the US payroll.

If the bonus is reportable in Colombia, the host payroll may need to capture it even though the employee receives no corresponding Colombian salary payment.

The host payroll must calculate the appropriate withholding and contribution treatment.

The employer also needs to determine whether the bonus changes the employee’s payroll deductions, contribution ceilings, taxable compensation or other obligations.

Split payroll does not eliminate this requirement.

Instead, the company has two paying payrolls plus potentially additional foreign-paid compensation to report.

That is why compensation data completeness can matter more than the nominal number of payroll systems.

15. Employee Cash Flow: Which Arrangement Feels Better to the Employee?

The employer-cost table does not tell the full story.

Two arrangements can provide the same annual net compensation while giving the employee different access to cash.

Shadow payroll employee experience

The employee receives net salary through the US payment channel.

To pay Colombian expenses, the employee may need to move or convert part of their net compensation.

Potential issues include:

• Exchange-rate timing
• Conversion charges
• International transfer delays
• Bank processing limits
• Currency availability
• Local account access

The employer may choose to subsidize conversion costs.

But these benefits are not automatically included in shadow payroll administration.

Split payroll employee experience

The employee receives part of their net compensation directly through a Colombian payroll.

This may simplify paying local rent, utilities and other obligations.

However, split payroll can introduce different issues.

The employee may receive two payslips.

Payments may arrive on different dates.

Home and host withholding arrangements may create uneven net cash flow.

Exchange-rate changes may affect how much local purchasing power the employee receives.

And a bonus processed in one jurisdiction may cause payroll adjustments in the other.

Comparing monthly net cash

Under Ivvora’s assumed withholding allocation:

Employee net cash	Shadow payroll	Split payroll
US-channel net cash	$4,500	$4,500
Colombian-currency net cash equivalent	$3,000	$3,000
Total monthly net compensation	$7,500	$7,500

The cash amounts are the same.

The delivery processes differ.

With shadow payroll, the local amount originates from net compensation delivered through the home payroll arrangement and is converted.

With split payroll, the local amount comes from an actual Colombian payroll payment.

If the employer funds all modeled FX fees, the employee receives the same net value before any unmodeled timing or currency effects.

This is a controlled comparison of payment delivery, not a tax savings illustration.

16. Dual Withholding Can Create a Working-Capital Problem

Employer cost and cash funding are different financial measurements.

A company may ultimately bear the same employee tax cost under both arrangements but need different amounts of cash during the year.

Consider an illustrative payroll coordination failure.

The employee’s expected combined payroll deductions are $30,000 annually.

But overlapping withholding processes temporarily cause an additional $12,000 to be withheld or remitted.

The employee’s available net cash is reduced until the excess is credited, refunded or otherwise reconciled.

Suppose Atlas agrees to maintain the employee’s net cash level and temporarily advances $12,000.

Assume:

• The advance is fully recoverable.
• Recovery occurs six months later.
• The employer’s financing rate is 8% annually.
• No additional legal or professional fees are incurred.

Financing cost:

$12,000 × 8% × 6/12 = $480

The employer has tied up $12,000 of cash and incurred $480 in modeled financing expense.

If the amount is never recoverable, or if employer reimbursement creates additional taxable compensation, the financial outcome changes.

Why this matters for split payroll

Two paying payrolls can create more opportunities for timing and withholding mismatches.

However, shadow payroll can also create funding gaps when the host payroll tax must be settled even though the employee receives salary abroad.

Therefore, neither arrangement is immune.

The relevant metric is not simply the amount of tax reported.

It is:

Peak unrecovered funding = Cash advanced for statutory or employee obligations − Amounts already recovered or offset

A finance team should forecast this separately from final employer cost.

An employee-side withholding remittance should not automatically be counted as additional final employer expense if it is funded through deductions from the employee’s existing gross salary.

17. The Intercompany Recharge Problem

Split payroll often involves more than one legal entity or payment service.

For example:

• A US entity may remain the contractual employer.
• A Colombian entity may fund local salary payments as an authorized paying agent.
• The Colombian entity may recharge those payments to the US entity.

The accounting must prevent the same $48,000 local payment from becoming a second consolidated expense.

Example: $48,000 host-paid salary

Assume the US entity remains the economic cost bearer.

The Colombian entity pays $48,000 of the employee’s salary on behalf of the US entity.

Under an appropriate agency and reimbursement arrangement, the entities record the payment and receivable or payable balances.

The group must reconcile the intercompany settlement.

At the consolidated level, the salary expense is still $120,000.

It is not:

$120,000 US salary + $48,000 Colombian salary = $168,000.

The US payroll or corporate ledger must account for the host payment in determining what the employee has already received.

Four intercompany questions

A company should determine:

1. Which entity is legally responsible for the salary?
2. Which entity physically disburses the money?
3. Which entity ultimately bears the employment expense?
4. Which entity must report and remit the applicable payroll liabilities?

The answers may differ.

They also may affect more than payroll processing.

Intercompany arrangements can have transfer-pricing, employment, tax, and permanent establishment consequences.

Those consequences are not automatically resolved by selecting shadow or split payroll.

18. What Happens With Ten Employees Instead of One?

The single-employee comparison produces an additional annual cost of $2,892 for split payroll.

Now consider ten identical $120,000 international assignments.

Assume the same employee cost structure and provider fees apply to every employee.

No volume discount or shared setup efficiency is assumed.

Ten-employee model

Cost measure	Shadow payroll	Split payroll
Employees	10	10
Combined annual gross salaries	$1,200,000	$1,200,000
Shared statutory contribution and benefit assumptions	$664,064	$664,064
Combined payroll operating expenses	$102,720	$131,640
Total annual employer cost	$1,966,784	$1,995,704
Difference	—	+$28,920

The additional operating cost grows with headcount under these assumptions.

But a real employer may be able to negotiate a shared payroll service arrangement.

For example, a provider might charge less per employee for ten assignments than for one.

The actual economics therefore depend on how pricing scales.

The group-level break-even

If the ten-person split payroll portfolio costs $28,920 more before any discount, the company needs an equivalent aggregate saving through administration, FX execution, payment services or other genuine operating efficiencies to reach break-even.

A company should not assume that every fee scales linearly.

Fixed registration charges, software setup fees and local payroll infrastructure may be shared.

Recurring employee-specific processing and tax preparation may not be.

A workforce cost engine needs to distinguish fixed, per-employee, and volume-dependent expenses.

19. The 12-Month, 24-Month and 36-Month Comparison

An employer may initially plan a one-year assignment and later extend it.

To show the effect of duration, Ivvora extends the baseline annual model over three years.

For this controlled comparison:

• Gross salary remains $120,000 annually.
• All contribution assumptions remain unchanged.
• Operating fees remain unchanged.
• The FX conversion assumptions remain unchanged.
• No additional setup or exit costs are introduced.
• No future statutory or exchange-rate changes are projected.

Cumulative employer cost

Duration	Shadow payroll	Split payroll	Split additional cost
12 months	$196,678	$199,570	$2,892
24 months	$393,357	$399,141	$5,784
36 months	$590,035	$598,711	$8,676

These figures illustrate how a recurring operating-cost difference accumulates.

They are not forecasts of actual 2027 or 2028 Colombian payroll costs.

The relative comparison is more important than the projected total.

An arrangement that adds $2,892 annually adds $8,676 over three years before discounting, changes in fees, or other adjustments.

That may be a small price for improved employee cash flow.

It may also be an unnecessary expense where shadow payroll already satisfies the employee’s needs.

The correct decision depends on the employer’s objectives.

20. When Shadow Payroll Is the Lower-Cost Choice

Shadow payroll is more likely to be economical when the existing home-country payment system can deliver the full salary efficiently and host-country compliance can be administered without a second paying payroll.

In the model, this condition applies because:

• One payroll physically pays the salary.
• Colombian reporting is handled through a shadow process.
• The home and host compensation reconciliation is comparatively simple.
• The employee’s local-currency net cash need is moderate.
• FX fees are not large enough to offset the incremental costs of a second paying payroll.

However, the arrangement must still be legally permitted.

A home payroll plus shadow reporting record does not by itself resolve local employment, immigration or corporate requirements.

The lower modeled cost is relevant only when the structure can meet those obligations.

21. When Split Payroll Can Be the Lower-Cost Choice

Split payroll becomes more attractive when the benefit of delivering salary in the host country exceeds the additional operating burden.

This could occur where:

• A significant share of net compensation must be available locally.
• The employee requires a stable host-currency payment arrangement.
• The employer already operates efficient home and host payroll systems.
• A provider can consolidate both paying payrolls and reporting.
• The employer can obtain materially better FX execution terms.
• Local payment needs cannot be met as efficiently through a home-payroll transfer.

The base-case comparison requires a $2,892 annual improvement in split-payroll economics to reach break-even.

That improvement could result from lower payroll administration fees, lower reconciliation charges or another measurable expense reduction.

An employer should not assume split payroll is cheaper because local payroll withholding appears lower.

The actual statutory liabilities must be calculated independently.

22. Five Questions Every CFO Should Ask Before Choosing

The decision should be based on a single, consolidated view of compensation, payroll obligations and money movement.

The five questions are:

1. Are we comparing the same legal employment arrangement?

If one option changes the contractual employer, covered compensation or employment rights, the comparison is no longer purely shadow versus split payroll.

2. Are both calculations based on the same total reportable compensation?

The host payroll may need to account for foreign-paid salary even if it does not physically pay it.

3. Have we separated employee tax deductions from employer expenses?

Withholding from the employee’s existing gross salary is not automatically another employer cost.

4. What is the real net salary conversion volume?

The cost of converting $36,000 of employee net cash is different from converting $48,000 of gross payroll.

5. How much additional administration does split payroll create?

A small FX advantage can disappear if operating two paying payrolls requires additional reconciliation, settlement and correction work.

These questions prevent a comparison from becoming a simple contest between two provider subscription prices.

23. Reproducible Cost Model: Inputs and Formulas

The Ivvora model can be reconstructed in a spreadsheet.

Shared employer-cost inputs

Variable	Value
B: Annual gross salary	$120,000
C: Colombian full employer contribution rate	30.022%
L: Colombian statutory monetary benefit rate	17.666667%
U: Modeled US employer FICA rate	7.65%
N: Annual local-currency net cash conversion	$36,000

Shadow payroll inputs

Variable	Value
Home paying payroll	$1,200
Host shadow reporting	$3,600
Cross-border reconciliation	$1,800
Mobility tax preparation	$3,000
FX execution spread	1.2%
Annual settlement and transfer fees	$240

Split payroll inputs

Variable	Value
Home paying payroll	$1,200
Host paying payroll and foreign-paid compensation reporting	$5,400
Dual-payment reconciliation	$3,000
Mobility tax preparation	$3,000
FX execution spread	0.4%
Annual settlement and transfer fees	$420

Step 1: Calculate shared employment cost

Shared employer cost = B + (B × C) + (B × L) + (B × U)

= $120,000 + $36,026.40 + $21,200 + $9,180

= $186,406.40

Step 2: Calculate shadow operating cost

Shadow operating cost = Home payroll + Host shadow payroll + Reconciliation + Tax preparation + (N × Shadow FX rate) + Settlement fees

= $1,200 + $3,600 + $1,800 + $3,000 + $432 + $240

= $10,272

Step 3: Calculate split operating cost

Split operating cost = Home payroll + Host paying payroll + Reconciliation + Tax preparation + (N × Split FX rate) + Settlement fees

= $1,200 + $5,400 + $3,000 + $3,000 + $144 + $420

= $13,164

Step 4: Calculate total employer cost

Shadow payroll total = $186,406.40 + $10,272

= $196,678.40

Split payroll total = $186,406.40 + $13,164

= $199,570.40

Step 5: Calculate incremental cost

Split payroll incremental cost = Split payroll total − Shadow payroll total

= $199,570.40 − $196,678.40

= $2,892

Step 6: Calculate split payroll break-even

Required annual improvement = $2,892

If an integrated payroll service reduces annual split-payroll operating expenses by at least $2,892 without changing any other assumption, the two modeled structures reach cost parity.

This formula allows the employer to replace hypothetical fees with real provider quotations.

24. Frequently Asked Questions

What is the difference between shadow payroll and split payroll?

Shadow payroll is a reporting and compliance process for compensation that may be paid elsewhere.

Split payroll divides actual salary payments between two or more payroll channels.

A split payroll arrangement may also require shadow reporting of compensation paid in another country.

Is split payroll cheaper than shadow payroll?

Not necessarily.

In Ivvora’s illustrative $120,000 employee model, shadow payroll costs $196,678 annually and split payroll costs $199,570.

The difference of $2,892 results from modeled administration, reconciliation, payment and FX expenses.

Different provider fees and payment needs can reverse the outcome.

Does split payroll reduce income tax?

Dividing an employee’s salary between countries does not automatically reduce taxable income.

Income tax depends on the applicable domestic laws, tax residence, source of employment income, relief provisions and other relevant facts.

The place of payment is not a universal rule for determining where the salary is taxable.

Can shadow payroll and split payroll operate together?

Yes.

An employee can receive salary through two paying payrolls while one or both countries use shadow reporting to account for compensation paid elsewhere.

The employer must ensure that cash payments and reporting entries are properly distinguished.

Does an employee receive two salaries under split payroll?

No, not simply because two payrolls are involved.

Under a conventional split-payment arrangement, the employee’s agreed compensation is divided between payment channels.

For example, $72,000 paid in the US and $48,000 paid in Colombia equals one $120,000 annual salary.

Does the employer pay social security in both countries?

It depends on the applicable employment and coverage rules.

International social security agreements, domestic exemptions, contribution ceilings and the employee’s circumstances can change the outcome.

Split payroll does not automatically divide social security obligations according to the salary payment percentages.

Why can split payroll cost more?

It can require two paying payrolls, extra reconciliation, intercompany funding, currency conversion and additional correction processes.

In the Ivvora model, the extra administration and settlement expenditure is greater than the FX saving.

Why would an employer choose split payroll if it costs more?

It may provide more reliable host-currency cash flow, support employee needs and fit the company’s existing payroll infrastructure.

The financial value of those benefits should be considered alongside the measurable operating premium.

Does shadow payroll create a second salary expense?

No.

A shadow payroll record does not automatically create an additional payment.

The employer must distinguish the compensation actually paid from the amounts reported for tax and contribution purposes.

What is the biggest mistake in a shadow versus split payroll comparison?

One of the most consequential mistakes is assuming that the portion physically paid in the host country is automatically the only compensation subject to host reporting or contributions.

That can lead to understated payroll liabilities and an inaccurate employer-cost comparison.

25. Final Analysis: The Cost Advantage Comes From Payroll Operations, Not Salary Splitting

The difference between shadow payroll and split payroll is fundamentally a difference in how compensation is delivered and administered.

It is not automatically a difference in total salary.

It is not automatically a difference in income-tax liability.

It is not automatically a difference in mandatory employer contributions.

For the modeled $120,000 employee working in Colombia, Ivvora calculates:

Final measure	Shadow payroll	Split payroll
Gross salary	$120,000	$120,000
Shared modeled statutory employer costs	$66,406	$66,406
Payroll operating costs	$10,272	$13,164
Total employer cost	$196,678	$199,570

Shadow payroll is $2,892 cheaper under the baseline assumptions.

But this does not establish that shadow payroll is always the preferred arrangement.

Split payroll can offer practical benefits when an employee needs stable access to host-currency income.

It can also become cheaper when the employer has integrated international payroll infrastructure or favorable service pricing.

The essential decision is whether those operational advantages justify the additional cost.

For a company evaluating international payroll, three figures should be calculated separately:

Total employer cost: The salary, legally applicable employer obligations and payroll operating expense.

Incremental payroll-delivery cost: The additional expense specifically created by choosing one payment structure over another.

Employee and treasury cash-flow requirement: The amount, currency and timing of money that must move between countries.

The three measures answer different questions.

A lower provider subscription fee does not automatically mean a lower employer cost.

A lower local payroll disbursement does not automatically mean a lower taxable salary.

And a second reporting record does not mean the employee has been paid twice.

The most financially efficient international payroll is the legally compliant structure that delivers the agreed compensation with the lowest combined cost of administration, payment execution, reconciliation and funding.

That is the decision a true employer-cost model should make visible.

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Research Methodology and Limitations

This research was prepared by Ivvora in October 2026.

It is an original, reproducible scenario model comparing two payroll delivery methods for the same hypothetical $120,000 employee working in Colombia.

The comparison uses official US and Colombian contribution information alongside explicitly defined service-cost and cash-flow assumptions.

The modeled provider administration fees, FX spreads, settlement charges, employee withholding allocation and employee local-currency cash needs are synthetic inputs.

They are not actual supplier quotations, observed averages or statutory tax assessments.

The study assumes that both payroll delivery methods can lawfully operate within the same underlying employment structure.

In practice, employment law, employer registration, tax residence, payroll withholding, currency controls, social security coverage and immigration requirements must be verified before selecting either method.

The main model holds legally applicable employer costs constant because the purpose is to isolate the cost of compensation delivery.

It does not establish that the full modeled US and Colombian contributions are necessarily due in every real assignment.

The cost model also excludes incremental employer-paid tax equalization, housing, assignment allowances, equity compensation, bonuses, exceptional legal expenses, corporate tax consequences, termination expenses and changes in pension coverage.

These should be included in an actual employer budget where relevant.

The salary amounts are in USD, with a fixed illustrative conversion of USD 1 to COP 4,000.

All values are rounded for presentation, while internal calculations retain unrounded figures.

The 24-month and 36-month comparisons use fixed assumptions for analytical purposes rather than forecasting future statutory rates or exchange rates.

Primary Sources

1. Global Payroll Association — The Shadow Payroll Effect. Industry guidance on shadow payroll reporting, compensation delivery and host-country compliance.
2. HMRC — Globally Mobile Employees and PAYE. Official guidance illustrating the distinction between international employment income and payroll withholding obligations.
3. HMRC — Employees Working Abroad. Official guidance on home and foreign payroll responsibilities.
4. IRS — Persons Employed Abroad by a US Person. US federal income-tax withholding considerations for employees working abroad.
5. IRS — 2026 Instructions for Form 941. Official employer Social Security and Medicare rates and wage-base limits.
6. US Social Security Administration — Totalization Agreements. Official list of US bilateral social security agreements.
7. Colombia — Decree 159 of 2026. Colombia’s statutory 2026 monthly minimum wage.
8. Ventanilla Única Empresarial — Employer Contributions. Official Colombian guidance on employer health, pension, occupational-risk and parafiscal contributions.
9. Colombian Tax Statute — Article 114-1. Colombian employer contribution exemption rules.
10. SENA — Article 114-1 Employer Exemption Interpretation. Guidance on eligibility and limits of certain employer contribution exemptions.
11. Colpensiones — Pension Affiliation Questions. Guidance on pension affiliation and certain foreign-worker situations.
12. Colombian Labor Regulations — Decree 1072 of 2015. Regulations relevant to Colombian employment and statutory benefits.

Ivvora analyzes international employer costs, cross-border payroll obligations and workforce financial decisions. This research is for financial planning and comparative analysis and does not replace jurisdiction-specific tax, employment, payroll or legal advice.