Foreign Tax Credit: Avoiding Double Tax on Foreign Income

Key Takeaways

• The foreign tax credit provides a dollar-for-dollar offset against US income tax for qualifying foreign income taxes paid, capped by a basket-by-basket limitation formula to prevent foreign taxes from subsidizing US-source income.
• Individuals with $300 or less ($600 joint) of passive foreign income taxes shown on a payee statement can claim the credit directly on Schedule 3 without filing Form 1116.
• The most common mistake is claiming a deduction for foreign taxes on Schedule A instead of the credit on Form 1116, the credit reduces tax dollar-for-dollar while the deduction only reduces taxable income, making the credit almost always more valuable.
• VAT, customs duties, social insurance contributions, and wealth taxes do not qualify as creditable foreign taxes under Section 901, and claiming them on Form 1116 leads to IRS disallowance.

What It Is

Internal Revenue Code Section 901 allows a dollar-for-dollar credit for foreign income, war profits, and excess profits taxes paid or accrued during the year. Individuals claim it on Form 1116; corporations use Form 1118. Taxpayers can alternatively deduct foreign taxes on Schedule A, but the credit is almost always more valuable because it reduces tax directly rather than reducing taxable income.

The credit is nonrefundable. It can offset US tax on foreign-source income, but it cannot create a refund beyond that limit.

The Intuition

A US citizen or resident is taxed on worldwide income. Without relief, dividends from a French stock would face both French withholding tax and US income tax on the same dollar. The foreign tax credit keeps the effective rate near the higher of the two jurisdictions rather than the sum of them.

Because the US wants the credit to offset only the US tax on the foreign income (not to subsidize foreign taxes on US-source income), the law adds a limitation computed separately for several income baskets.

How It Works

The limitation formula.

FTC limit (per basket) = US tax before credits x (foreign source taxable income /
                                                   total taxable income)

The credit for each basket is the lesser of foreign tax paid or the basket limit. Unused credits generally carry back one year and forward ten, except for credits attributable to Section 951A global intangible low-taxed income (GILTI), which do not carry.

Separate baskets. Section 904(d) requires separate computations for:

• Passive category income (dividends, interest, most portfolio income)
• General category income (wages, active business income)
• Section 951A (GILTI) income
• Foreign branch income
• Income re-sourced under a tax treaty
• Section 901(j) income from sanctioned countries

De minimis exception. Individuals with only passive foreign source income whose qualified foreign taxes are $300 or less ($600 for a joint return) and who receive all foreign income on a payee statement (such as a 1099-DIV) can claim the credit on Schedule 3 without filing Form 1116.

Qualifying taxes. Only compulsory income taxes count. Penalties, interest, customs duties, value-added taxes, and social insurance contributions do not qualify. Foreign taxes imposed on a non-income base (such as gross receipts) generally do not qualify unless a treaty or regulation converts them.

Treaty resourcing. If a US person earns income the treaty says should be taxable primarily by the foreign country, a "re-sourced by treaty" basket allows the credit to match.

Worked Example

Assume a US individual earns $10,000 of French dividends in 2026 and French withholding tax is $1,500 (15 percent under the US-France treaty for portfolio dividends). The investor's total taxable income is $300,000 and pre-credit US tax is $60,000.

Foreign source taxable income in passive basket = $10,000
FTC passive-basket limit = $60,000 x ($10,000 / $300,000) = $2,000
Foreign tax paid in basket = $1,500
Credit allowed = min($2,000, $1,500) = $1,500

The full $1,500 of French tax offsets US tax. If the treaty rate had been 25 percent ($2,500 paid), only $2,000 would be creditable in 2026. The remaining $500 could carry back one year or forward up to ten, used only against future passive-basket US tax on foreign-source income.

Common Mistakes

1. Claiming a deduction when the credit would be bigger. Electing to deduct foreign taxes on Schedule A reduces taxable income but not tax dollar-for-dollar. For most investors with ordinary itemized deductions, the credit on Form 1116 is materially better.
2. Ignoring basket limitations. Lumping general-category wages and passive dividends into a single calculation usually inflates the credit and invites IRS adjustment. Each basket has its own formula.
3. Trying to credit non-income foreign taxes. VAT, social security equivalents, and wealth taxes are not creditable under Section 901. Investors sometimes submit these on Form 1116 and have the credit denied.
4. Missing the one-year carryback. Unused credits first carry back one year and only then forward. Filing a correctly amended prior-year return can recover real refunds that never carry forward on autopilot.
5. Forgetting the FTC limitation applies after other provisions. Credits attributable to PFIC income, GILTI inclusions, or income excluded by the foreign earned income exclusion have special rules. Stacking FTC, Section 911, and PFIC regimes without checking ordering rules produces common errors.

Frequently Asked Questions

Q: What is the foreign tax credit in simple terms? When you pay income tax to a foreign government on money you also report to the IRS, the foreign tax credit lets you subtract the foreign payment from your US tax bill rather than paying full tax twice on the same dollar. It keeps your effective rate near the higher of the two jurisdictions, not the sum.

Q: How does the foreign tax credit affect investment decisions? It makes international diversification more tax-efficient. US investors in a diversified foreign stock fund typically receive a small foreign tax credit each year from withholding taxes on foreign dividends, offsetting part of their US tax. Holding those funds inside an IRA eliminates the credit benefit, which is a reason to favor foreign funds in taxable accounts.

Q: What is a real-world example of the foreign tax credit? A US investor earns $10,000 of French dividends and France withholds $1,500 (15 percent). The passive-basket credit limit is $2,000 based on the proportion of foreign income to total income. The investor claims the full $1,500 credit, reducing US tax by $1,500 rather than paying US tax on top of the French withholding.

Q: How can investors maximize the foreign tax credit? File Form 1116 and compute the credit by basket rather than taking the deduction, carry back unused credits one year before carrying forward, and avoid holding foreign-source income in tax-deferred accounts where the credit is wasted. Check treaty withholding rates, excess withholding above treaty rates is not creditable.

Q: How is the foreign tax credit different from the foreign earned income exclusion? The foreign earned income exclusion (Section 911) eliminates US tax on wages and self-employment income earned while living abroad, up to an annual limit. The foreign tax credit offsets US tax on any type of foreign income, dividends, capital gains, rents, but does not exclude income, only credits foreign taxes paid against US liability. The two cannot be used on the same income dollar simultaneously.

Sources

1. Internal Revenue Service. "Foreign Tax Credit." https://www.irs.gov/individuals/international-taxpayers/foreign-tax-credit
2. Internal Revenue Service. "Instructions for Form 1116 (2025), Foreign Tax Credit." https://www.irs.gov/instructions/i1116
3. Internal Revenue Service. "Topic No. 856, Foreign Tax Credit." https://www.irs.gov/taxtopics/tc856
4. Cornell Legal Information Institute. "26 U.S. Code Section 901, Taxes of foreign countries and of possessions of United States." https://www.law.cornell.edu/uscode/text/26/901

Disclaimer

This article is educational content only and is not financial advice. Nothing here is a recommendation to buy, sell, or hold any security. Consult a licensed advisor before making investment decisions.