Foreign Tax Credit Explained: Avoiding Double Taxation on Overseas Income

The U.S. Taxes Worldwide Income — Then Partially Gives It Back

The United States is one of only two countries (Eritrea is the other) that taxes its citizens on worldwide income regardless of where they live. A U.S. citizen working in Germany owes German income tax on their salary and U.S. income tax on the same earnings. To prevent full double taxation, Congress created the foreign tax credit under Sections 901–909 of the Internal Revenue Code, allowing taxpayers to offset their U.S. tax liability with taxes paid to foreign governments. For the 2022 tax year, the IRS reported approximately $20 billion in foreign tax credits claimed by individual filers.

What Taxes Qualify for the Credit

Not every payment to a foreign government qualifies as a creditable foreign tax. The IRS applies a series of tests before a foreign levy qualifies.

Form 1116: The Per-Basket Limitation

The foreign tax credit is calculated on Form 1116 (individuals) or Form 1118 (corporations). The IRS divides foreign income and taxes into "baskets" — separate categories that cannot be cross-offset. The two primary baskets for individual filers are:

• Passive income basket: Foreign dividends, interest, royalties, rents, and most investment income. Taxes in this basket can only offset U.S. tax on passive income
• General income basket: Foreign wages, self-employment income, and active business income that does not fit into another basket
• Section 951A (GILTI) basket: Global intangible low-taxed income for shareholders of controlled foreign corporations
• Branch income basket: Foreign branch business income

The per-basket limitation prevents a taxpayer from using high-tax foreign wages to shelter U.S. tax on lightly taxed foreign dividends. Each basket has its own credit limitation equal to the foreign income in that basket divided by total taxable income, multiplied by the U.S. tax liability before credits.

The Credit Limitation Formula

The maximum allowable credit in each basket is: (Foreign source income in basket ÷ Total worldwide taxable income) × U.S. tax before credits. If the foreign tax paid exceeds this limitation, the excess cannot be used in the current year. Excess foreign taxes can be carried back one year and carried forward up to 10 years. High-tax countries like Germany, France, or Sweden routinely generate excess credits for U.S. expats because those countries' rates exceed U.S. rates.

Foreign Tax Credit vs. Foreign Earned Income Exclusion

U.S. citizens living abroad can exclude up to $126,500 (2024) of foreign earned income under the Foreign Earned Income Exclusion (FEIE) using Form 2555. The FEIE and the FTC are mutually exclusive for the same income — you cannot exclude income and also claim a credit for taxes paid on that income. The optimal choice depends on the taxpayer's situation.

• FEIE benefits Americans in low-tax countries (Middle East, parts of Asia) where there is little or no foreign tax to credit
• FTC benefits Americans in high-tax countries (Western Europe) where foreign taxes exceed U.S. tax liability
• Self-employed expats who use the FEIE still owe U.S. self-employment tax on excluded income; FTC does not cover SE tax
• The FEIE requires either bona fide residence or physical presence abroad for 330 days in a 12-month period

The $300/$600 Simplified Method

Taxpayers with foreign taxes paid entirely on passive income from mutual funds or investment accounts may claim the credit without filing Form 1116 if total foreign taxes paid are $300 or less ($600 for married filing jointly). This simplified method is available only when all foreign taxes are creditable, all income is passive, and no carryover or carryback is involved. Most investors who pay foreign withholding taxes on international ETFs and mutual funds qualify for this streamlined election.

This article is for informational purposes only and does not constitute financial or tax advice.