Americans abroad have two main weapons against paying tax twice on the same income. The foreign earned income exclusion removes qualifying wages from U.S. taxable income, up to $130,000 for 2025 and $132,900 for 2026. The foreign tax credit, under 26 U.S.C. 901, lets you subtract foreign income taxes you paid from your U.S. tax.
One shrinks the income. The other shrinks the tax. That difference drives everything about which to use.
How the foreign tax credit works
The credit is claimed on Form 1116 for individuals. It offsets U.S. tax dollar for dollar with qualifying foreign income taxes, but it is limited. Section 904 caps the credit so it can only offset the U.S. tax attributable to foreign source income, and it applies that limit separately to categories of income. Under section 904(d)(1), the separate categories are amounts includible under section 951A (other than passive income), foreign branch income, passive category income, and general category income. For most individuals abroad, wages fall in the general category and investment income in the passive category.
Foreign taxes that exceed the limit are not lost immediately. Under section 904(c), excess foreign taxes can be carried back to the first preceding taxable year and forward to the first 10 succeeding taxable years, as credits only.
Unlike the exclusion, the credit is not limited to earned income. It can offset U.S. tax on foreign dividends, interest, rents and capital gains, to the extent foreign income tax was paid on them and the limitation allows.
The no-double-benefit rule
You cannot exclude income and also take a credit for foreign tax on that same income. Section 911(d)(6) denies any deduction, exclusion or credit, including a credit or deduction for foreign taxes, to the extent it is properly allocable to or chargeable against excluded amounts. Publication 54 says it plainly: once you have elected the exclusion, you cannot take a foreign tax credit or deduction for foreign taxes on income you choose to exclude.
But you can combine them. Publication 54 notes that a high wage earner can take the exclusion up to the limit for the year and then take a foreign tax credit for foreign taxes paid on the portion of wages that was not excluded.
When the credit usually wins
This is not tax advice for your facts, but certain patterns show up again and again.
- You live in a country with income tax rates at or above U.S. rates. If your foreign tax on wages is larger than the U.S. tax on the same wages, the credit can wipe out the U.S. tax, and the excess may carry forward. The exclusion would leave those foreign taxes on excluded income unusable.
- You want the refundable child credit. Publication 54 says that if you elect the foreign earned income exclusion or housing exclusion, or take the housing deduction, you cannot take the additional child tax credit that year. Families with children sometimes come out ahead using the credit instead.
- You may move back to the United States. Carryover foreign tax credits can be valuable later. Exclusion elections, once revoked, have a waiting period to re-elect.
- Your income is mostly passive. The exclusion does nothing for investment income.
When the exclusion usually wins
- You live in a country with low or no income tax on your wages. With little foreign tax to credit, the credit cannot offset much. The exclusion removes the income regardless of whether foreign tax was paid.
- Your earnings are below the exclusion limit and your foreign tax is low. The exclusion may reduce your U.S. tax on wages to zero with less paperwork.
Remember that the exclusion's stacking rule in section 911(f) taxes your non-excluded income at the rates that would apply if the excluded income were included. That can make the exclusion less attractive for someone with significant other income.
The election trap
Here is the part most people miss. The exclusion is an election that stays in effect for all later years until revoked, under section 911(e)(1). Publication 54 says that if you later take a foreign tax credit or deduction, the additional child tax credit or the earned income credit, you are considered to have revoked the exclusion election for that year.
Once revoked, section 911(e)(2) bars a new election before the sixth taxable year after the year of revocation unless the IRS consents. Publication 54 describes requesting that consent through a private letter ruling.
So a family that switches from the exclusion to the credit for one year to pick up the additional child tax credit may be locked out of the exclusion for several years afterward. That might still be the right call. It should be a decision, not an accident. See revoking the FEIE election.
A simple comparison
Take a single U.S. citizen living in a high-tax country, earning $120,000 in foreign wages in 2026, and paying the equivalent of $36,000 in foreign income tax on those wages.
- With the exclusion: the $120,000 is excluded. U.S. income tax on the wages is zero. The $36,000 of foreign tax on excluded income produces no credit and no carryover.
- With the credit: the $120,000 is taxable in the United States. If the U.S. tax on it is less than $36,000, the credit offsets it, subject to the section 904 limitation, and the unused foreign tax may carry back one year and forward ten.
Both approaches can produce zero U.S. tax on the wages this year. The difference is what you have left for future years, and whether other benefits like the additional child tax credit are available. In a low-tax country, the same exercise often points the other way.
Run it both ways. The software makes that easy, and the result can surprise you.
Questions to answer before you choose
- What is the foreign income tax rate on your wages compared with the U.S. rate on the same wages?
- Do you have children who would qualify for the additional child tax credit?
- How much of your income is investment income that the exclusion cannot reach?
- Are you likely to return to the United States, where carryover credits could be useful?
- Have you elected the exclusion before? If so, would switching revoke it, and could you live with the waiting period?
- Will your income exceed the exclusion limit, so that a combined approach makes sense?
Write the answers down and keep them with your return. When a future preparer asks why you chose what you chose, you will have the reason in one place.
Housing, self-employment and other wrinkles
Keep proof of the foreign taxes you claim as a credit: foreign returns, assessments and payment records. A credit is only as good as the documentation behind it, and foreign tax documents can be hard to obtain years later from overseas.
The housing exclusion is a separate election that works alongside the earned income exclusion. If you use the credit instead, there is no housing exclusion, but the foreign taxes on the housing-related income may be creditable. See the foreign housing exclusion.
Neither the exclusion nor the credit eliminates U.S. self-employment tax. The IRS says self-employed Americans abroad pay self-employment tax on all net profit, even if they claim the exclusion. The fix for that, where it exists, is a totalization agreement, not an income tax election. See totalization agreements.
And neither tool affects your FBAR or Form 8938 obligations. A taxpayer with zero U.S. tax still files them.
If you have been using the exclusion on autopilot for years, it may be worth running the numbers again. If you want help doing it, let's talk.
Frequently asked questions
Can I use both the foreign tax credit and the foreign earned income exclusion?
Yes, but not on the same income. You can exclude wages up to the limit and claim a credit for foreign taxes on wages above the limit or on other foreign income.
What happens to foreign taxes I cannot use this year?
Under 26 U.S.C. 904(c), excess foreign taxes can be carried back one year and forward ten years as credits.
Does switching to the foreign tax credit revoke my exclusion?
Publication 54 says that taking a foreign tax credit or deduction, the additional child tax credit or the earned income credit in a later year is treated as revoking the exclusion election for that year.
Does the exclusion apply to investment income?
No. It applies only to foreign earned income. The foreign tax credit can apply to foreign taxes on investment income, subject to the limitation.
Sorting this out from overseas?
The IRS works by mail, fax and phone, and so can your lawyer. Bring your returns, your account list and any IRS letters, and we will map out what is required and what is late.