Free foreign tax credit calculator. Estimate your FTC limit using the IRS formula, compare credit vs deduction, and calculate the maximum credit for foreign taxes paid on international income.
The Foreign Tax Credit Calculator estimates the maximum credit you can claim for income taxes paid to foreign governments. The foreign tax credit (FTC) prevents double taxation by allowing you to offset your U.S. tax liability by the taxes already paid abroad, subject to a limitation based on the ratio of your foreign-source income to worldwide income.
The FTC is generally more beneficial than taking a deduction for foreign taxes because a credit reduces your tax dollar-for-dollar, while a deduction merely reduces taxable income. This calculator computes the FTC limit, compares credit vs deduction, and shows any excess carryforward.
Enter your foreign-source income, foreign taxes paid, and total worldwide income to see your optimal tax strategy. The foreign tax credit reduces dollar-for-dollar the US tax you owe on foreign income, while the deduction only reduces taxable income. In most situations the credit provides a larger benefit, but cases with very high foreign tax rates or specific income sourcing rules can change the calculus. This calculator models both approaches and shows the IRS limitation formula that caps the credit at the US tax attributable to your foreign-source income.
Many investors with international mutual funds, expats, and global business owners pay taxes to foreign governments. This calculator shows whether you should take a credit (usually better) or a deduction, computes the IRS limitation, and identifies any excess credit that can be carried forward for up to 10 years. Choosing correctly between credit and deduction can save hundreds or thousands of dollars annually.
FTC Limit = U.S. Tax × (Foreign Source Income / Worldwide Income) Usable Credit = Min(Foreign Taxes Paid, FTC Limit) Excess Credit = Foreign Taxes Paid − Usable Credit (carryover up to 10 years) Deduction Savings = Foreign Taxes Paid × Marginal Rate Credit Advantage = Usable Credit − Deduction Savings
Result: FTC limit: $6,000 | Usable credit: $6,000 | $2,000 carryforward
FTC limit = $18,000 × ($40,000 / $120,000) = $6,000. Since $8,000 was paid in foreign taxes, only $6,000 can be used this year. The remaining $2,000 carries forward. Taking the credit saves $6,000 vs a deduction which at a 22% rate would only save $1,760.
The credit reduces your U.S. tax dollar-for-dollar (up to the limitation), while a deduction reduces taxable income by the amount of foreign taxes paid, saving only your marginal rate on that amount. For example, $5,000 in foreign taxes generates a $5,000 credit vs a $1,100 deduction savings at a 22% rate. The credit is nearly always the better choice.
The IRS requires you to compute separate FTC limitations for different categories of income (baskets). The main baskets are: Passive Category (dividends, interest, rental income, capital gains) and General Category (wages, business income). Excess credits in one basket cannot offset limitations in another, making proper categorization critical on Form 1116.
U.S. expats can also use the Foreign Earned Income Exclusion (FEIE, up to $130,000 for 2025) to exclude foreign wages from U.S. tax. You cannot take both the FEIE and FTC on the same income, but you can use the FTC for income above the exclusion or for passive income not covered by the FEIE.
Foreign-source income includes wages earned abroad, foreign business profits, dividends from foreign corporations, interest from foreign banks, and rental income from foreign properties. The sourcing rules can be complex — some income types are sourced based on where the service is performed, while others are based on the payer's country.
The FTC limitation prevents you from using foreign credits to offset U.S. tax on U.S.-source income. The limit is calculated as: U.S. tax liability × (foreign-source taxable income / worldwide taxable income). If your foreign taxes exceed this limit, the excess carries forward up to 10 years.
In almost all cases, the credit is more valuable because it reduces tax dollar-for-dollar, while the deduction only reduces taxable income. The deduction might be preferable in rare cases where your income is very low or you can't use the full credit and don't expect to in the carryforward period.
You can claim up to $300 ($600 MFJ) of foreign tax credits without Form 1116 if the taxes are reported on a payee statement (like a 1099-DIV). For larger amounts, you must file Form 1116, which requires separating income into baskets (general vs passive) and computing the limitation.
Excess credits that exceed the current-year limitation can be carried back 1 year or forward up to 10 years. The carried credit is subject to the limitation in the year it's used. If you consistently pay more foreign tax than your limitation allows, credits may expire unused after 10 years.
Yes, foreign taxes paid on capital gains generally qualify for the FTC. However, the capital gains may need to be separated into the passive basket on Form 1116. Some countries tax gains at different rates than the U.S., so the limitation calculation becomes important.