Expat Tax Equalization Calculator
Tax equalization (TEQ) is a standard corporate policy for international assignments. The employee pays a "hypothetical tax" equivalent to what they would have paid at home, and the employer handles any difference between that and the actual host-country tax. This calculator compares the hypothetical home-country income tax with the actual host-country income tax on the same assignment income, and shows the employer top-up required (if the host is a higher-tax country) or the clawback (if the host is lower-tax). Enter the home gross salary, the hypothetical home tax rate, and the actual host income tax amount paid.
Tax equalization formula
Hypothetical home tax = gross salary x (home tax rate / 100)
Stay-at-home net = gross salary - hypothetical home tax
Top-up / (clawback) = actual host tax - hypothetical home tax
Positive = employer pays extra; negative = employer recovers
This is a simplified single-rate model. In practice, hypothetical tax calculations use the full graduated home-country tax schedule and may include adjustments for housing, deductions, and social taxes.
How tax equalization protects employees
- Without equalization, employees sent to high-tax countries face a windfall tax hit that may deter them from accepting assignments.
- Employees are neither better nor worse off tax-wise than if they had stayed home, making international mobility easier to manage.
- The policy is documented in an assignment letter and tax protection policy agreed between employer and employee before assignment.
- Actual TEQ calculations are performed by international tax advisors using full tax returns for both countries.
Frequently asked questions
What is tax equalization for expatriates?
Tax equalization is a policy many multinational employers use so that expatriates pay the same tax they would have paid had they stayed in their home country. The employer absorbs any additional host-country tax and recovers any windfall if the host tax is lower than the hypothetical home tax.
What is the hypothetical home tax?
The hypothetical home tax is an estimate of what the employee would have paid in income tax in their home country on their home-country equivalent salary. The employer deducts this amount from the employee's net pay and then pays all actual host-country taxes on behalf of the employee.
What does 'stay-at-home net' mean?
Stay-at-home net is the after-tax salary the employee would have received if they had not been assigned abroad. It equals the home gross salary minus the hypothetical home tax.
How does the employer top-up or clawback work?
If the actual host tax exceeds the hypothetical home tax, the employer pays the difference (a top-up). If the host tax is less, the employer recovers the difference (a clawback). The employee always nets the same after-tax amount regardless of where they are posted.
Is tax equalization always beneficial for the employer?
Not always. Posting employees to low-tax jurisdictions results in a clawback, but posting to high-tax jurisdictions can significantly increase compensation costs. Many employers model the net cost before approving assignments.
Official sources
- IRS Publication 54, Tax Guide for US Citizens Abroad: irs.gov/publications/p54.
- OECD Model Tax Convention (overview): oecd.org/tax/treaties/.
Reviewed by the CalculatorHub team, edited by James Graham, 15 June 2026. See our methodology.