Strategy Snapshot
The Foreign Tax Credit reduces U.S. tax dollar for dollar by income taxes paid to foreign governments, claimed on Form 1116. The credit is limited to the U.S. tax on your foreign-source income, calculated separately by income basket, and unused credits carry back one year and forward ten. For expats in high-tax countries it usually beats the FEIE; for investors it is often the only tool.
Foreign income taxes legally owed and actually paid or accrued. VAT, wealth taxes, and most foreign social security contributions do not count.
The credit cannot exceed the U.S. tax attributable to your foreign-source income, computed separately for passive and general income. Excess credits carry forward ten years.
Claiming credits for taxes on income you excluded under the FEIE, or missing the small-credit exception that lets many investors skip Form 1116 entirely.
The Foreign Tax Credit is the workhorse of international tax relief: a dollar-for-dollar credit against U.S. tax for income taxes paid to foreign governments, claimed on Form 1116. Where the Foreign Earned Income Exclusion
only shelters wages and only up to a cap, the credit reaches every category of income, has no dollar ceiling, and banks its excess for the future. It is also the more technical of the two tools, and the limitation math is where returns go wrong.
The concept in one sentenceThe U.S. taxes worldwide income but concedes the first bite to the country where the income arose: whatever income tax you properly paid there becomes a credit here, up to the U.S. tax on that same income.
Who Uses It
Form 1116 shows up on two very different kinds of returns:
- Americans abroad paying income tax to their country of residence on salaries, self-employment income, or local investments
- U.S.-based investors with foreign tax withheld on dividends and interest: a Mexican dividend with 10% treaty withholding, a European fund position, a foreign brokerage account
For the second group there is a shortcut worth knowing before anything else: if total creditable foreign taxes are $300 or less ($600 filing jointly), all passive and all shown on payee statements such as a 1099-DIV, the credit goes straight on Schedule 3 with no Form 1116 at all. The cost of the shortcut is that nothing carries over. Above those amounts, or for wages and business income, Form 1116 is required.
Which Foreign Taxes Qualify
The credit is for foreign income taxes: taxes on income, war profits, or excess profits, plus taxes imposed “in lieu of” an income tax (common where a country taxes gross receipts of nonresidents by withholding). Four conditions run through every case: the tax must be a legal and actual liability, imposed on you, actually paid or accrued, and not refundable or subsidized.
What does not qualify catches people constantly:
| Creditable | Not creditable |
|---|---|
| Foreign income tax on wages and self-employment income | VAT and sales taxes |
| Treaty-rate withholding on dividends, interest, royalties | Wealth and net-worth taxes |
| Foreign tax on rental income and capital gains | Foreign real estate (property) taxes |
| Taxes in lieu of income tax on nonresidents | Most foreign social security contributions |
| Amounts refundable to you, or above the treaty rate |
That last row deserves emphasis. If a treaty capped the withholding at 10% and the foreign payer withheld 30%, only the 10% is creditable; the remedy for the rest is a refund claim in the foreign country, not a larger U.S. credit. And taxes on income excluded under the FEIE are disallowed in proportion to the exclusion.
The Limitation: The Heart of Form 1116
The credit cannot exceed the U.S. tax on your foreign-source income. The formula:
FTC limit = U.S. tax × (foreign-source taxable income ÷ total taxable income)
Pay foreign tax at rates above your U.S. rate and the limit binds: the excess is not lost, but it cannot be used this year. Pay foreign tax below your U.S. rate and the credit absorbs fully, leaving residual U.S. tax on that income. This is the mechanical reason expats in high-tax countries (the UK, Germany, Spain, Canada, Australia) usually owe the U.S. nothing and build up carryforwards, while expats in low-tax countries still owe the difference.
The baskets. The limitation is computed separately by category of income, each on its own Form 1116:
- Passive category: dividends, interest, capital gains, most rents and royalties
- General category: wages, self-employment income, active business income
- Narrower baskets where they apply: foreign branch income, GILTI for owners of controlled foreign corporations , income re-sourced by treaty, and sanctioned-country income
Baskets do not mix. Excess credits from high-taxed wages cannot shelter U.S. tax on foreign dividends, and vice versa. Most individual returns need only the passive and general baskets, but each one is a separate calculation with its own carryovers.
Carryovers. Unused credits carry back one year and forward ten, within their basket. A carryforward schedule is worth maintaining even in years it changes nothing, because the balances become valuable exactly when life changes: a move back to the U.S., a sabbatical year, a shift of income toward U.S. sources.
The FEIE Interaction
You cannot double-dip: foreign taxes attributable to income excluded on Form 2555 are proportionately disallowed on Form 1116. The two tools combine across different dollars instead, FEIE on wages up to the exclusion, FTC on the rest, and the right mix depends on your country’s tax rate, your income level, and factors the quick math misses: credited income still counts as earned income for IRA contributions and the additional child tax credit, while excluded income does not. Also remember the FEIE election is sticky (a five-year lockout after revoking), while the FTC carries no such restriction. The full decision framework is in our FEIE vs. FTC comparison .
Timing: Paid vs. Accrued
Cash-basis taxpayers claim foreign taxes in the year paid, but can elect the accrual method on Form 1116, matching the credit to the year the foreign tax liability relates to. The election helps when foreign tax years or payment dates misalign with the U.S. calendar (a common issue with April-to-April tax years like the UK’s), but it is binding for all future years once made, so it deserves a deliberate choice the first time, not a software default. Foreign taxes must also be translated to dollars, generally at the average rate for accrued taxes or the spot rate when paid.
Common Mistakes
- Crediting the wrong taxes. VAT, property tax, and foreign social security routinely get swept into the credit and unwound later. When a totalization agreement covers social security, the answer is a certificate of coverage, not Form 1116.
- Ignoring the redetermination rule. If the foreign country later refunds or adjusts the tax, the U.S. credit must be redetermined, which can mean amending the U.S. return.
- Missing the sourcing analysis. The limitation depends on how much income is foreign-source, and sourcing follows its own rules: services are sourced where performed, not where the client sits. A remote worker in the U.S. paid by a foreign company generally has U.S.-source wages and little or no FTC limit to work with.
- Forgetting the carryforward file. Ten years of basket-by-basket balances only help if someone tracked them.
When to Seek Help
A single 1099-DIV with $180 of foreign withholding is a checkbox. Get help when the return combines wages and investment income across baskets, a high-tax country where FEIE-versus-FTC deserves a real comparison, accrual-election or redetermination questions, or carryforwards from prior years that nobody has reconciled. The credit is the core planning tool of our international tax practice , and the difference between claiming it and claiming it well compounds year after year.
Last updated: 2026