If you are a US citizen or green card holder living and working abroad, the federal Foreign Tax Credit (FTC) is the single most powerful tool in the Internal Revenue Code for eliminating double taxation. The Foreign Tax Credit for US expats is a nonrefundable credit — it can reduce your federal income tax to zero but cannot generate a standalone refund. Unlike the Foreign Earned Income Exclusion (FEIE), which merely excludes income from US tax, the FTC gives you a dollar-for-dollar credit against your US tax liability for income taxes you have already paid to a foreign government. For Americans in high-tax countries — the UK (up to 45%), Canada (up to 53.53%), Germany (up to 45%), France (up to 45%), Australia (up to 45%), Japan (up to 55.97%) — the FTC routinely eliminates the entire US tax bill and generates excess credits that carry forward for 10 years. This guide walks through everything you need to know to claim the Foreign Tax Credit on Form 1116 for the 2026 tax year, including the FTC baskets, the limitation formula, carryback and carryforward rules, a worked example with real numbers, and the most common mistakes that trigger IRS notices.
2026 Foreign Tax Credit Quick Reference
- Form: Form 1116 (Foreign Tax Credit — Individuals, Estates, or Trusts)
- Credit type: Dollar-for-dollar offset against US tax liability
- Eligible taxes: Income taxes paid or accrued to any foreign country or US possession
- Carryback: 1 year (amended return required)
- Carryforward: 10 years (applied chronologically, oldest credits first)
- FTC baskets: General category, Passive category, Section 951A (GILTI), Foreign Branch Income, Section 901(j) (sanctioned countries)
- Simplified election: If total creditable foreign taxes are $300 or less ($600 married filing jointly) and all taxes are on passive income, you can claim the FTC directly on Form 1040 without filing Form 1116
- Key limitation: FTC cannot exceed your US tax on the foreign-source income (IRC §904(a))
- Cannot combine with FEIE: You cannot claim the FTC on income already excluded under the FEIE — choose one method per income category
What Is the Foreign Tax Credit?
The Foreign Tax Credit (IRC §901) allows US taxpayers to reduce their US tax liability by the amount of income taxes paid to foreign governments. It exists because the United States taxes its citizens on worldwide income — meaning you are taxed by both the US and the country where you actually live and work. Without the FTC, a US expat in the UK earning $100,000 would pay roughly 40% to HMRC ($40,000) and then owe another $18,000+ to the IRS, for a combined rate near 60%. The FTC prevents this by letting you credit the $40,000 UK tax against your US liability, eliminating the US bill entirely.
The FTC is fundamentally different from a deduction. A deduction reduces your taxable income — saving you tax at your marginal rate (e.g., a $10,000 deduction at the 24% bracket saves $2,400). A credit reduces your tax dollar-for-dollar — a $10,000 credit saves exactly $10,000. For anyone paying foreign taxes above single-digit rates, the FTC is almost always superior to deducting foreign taxes on Schedule A.
What Taxes Qualify for the Foreign Tax Credit?
Not every tax paid to a foreign government qualifies. The IRS requires that the tax meet four tests under Treasury Regulation §1.901-2:
- It must be a tax (not a fee or penalty): The payment must be a compulsory levy imposed by a foreign government. Voluntary payments, fines, penalties, and payments for specific economic benefits (like mining rights) do not qualify.
- It must be an income tax (or a tax in lieu of income tax): The foreign tax must be based on net income — meaning it allows deductions for costs and expenses. Gross-basis withholding taxes (like the 15% withheld on dividends under most treaties) qualify. Value-added taxes (VAT/GST), property taxes, sales taxes, payroll taxes (like UK National Insurance or Canadian CPP), and wealth taxes do NOT qualify.
- It must be imposed on you: You can only credit taxes that are your legal liability. If your employer withholds UK PAYE tax from your salary, that qualifies — it is your tax liability being paid on your behalf. But you cannot credit taxes paid by a foreign corporation you own, even if those taxes reduced your dividend.
- It must be paid or accrued: You elect annually to claim credits on either a cash basis (taxes actually paid during the year) or accrual basis (taxes that accrue during the year regardless of when paid). Most expats use the accrual method because it better matches income and credits in the same tax year. Once you elect a method, you cannot switch without IRS consent.
Common taxes that DO qualify: UK income tax (PAYE), UK capital gains tax, Canadian federal and provincial income tax, German Einkommensteuer, French impôt sur le revenu, Australian income tax, Japanese income tax, dividend withholding taxes under tax treaties.
Common taxes that do NOT qualify: UK National Insurance contributions (NICs), Canadian CPP/QPP contributions, Canadian EI premiums, UK council tax, French CSG/CRDS (partially — only the portion treated as income tax by the US-France treaty), VAT/GST, property taxes, stamp duties, inheritance taxes (separate credit under IRC §901(b)(3)).
Understanding FTC Baskets (Categories)
The Foreign Tax Credit is not one big bucket. The IRS requires you to separate your foreign income and taxes into baskets (officially called "categories") and calculate the FTC limitation separately for each basket. You file a separate Form 1116 for each basket. This prevents you from using excess credits from one type of income to offset US tax on a different type — a concept called "cross-crediting" that the basket system was designed to prevent.
The main baskets for individual taxpayers are:
1. General Category Income (Form 1116, Category E)
This is the basket for most working expats. It includes wages, salaries, self-employment income, and business income from foreign sources. If you are employed in London, your UK salary goes in the general category, and the UK income tax you paid on that salary is the creditable tax for this basket.
2. Passive Category Income (Form 1116, Category A)
This basket covers investment income: dividends, interest, rents, royalties, capital gains on portfolio investments, and income from PFICs (Passive Foreign Investment Companies). If you hold shares in a UK-listed company and receive dividends subject to UK withholding tax, both the income and the tax go in the passive basket. Rental income from a foreign property goes here as well, along with any foreign tax paid on it.
3. Section 951A (GILTI) Category
Global Intangible Low-Taxed Income applies if you own 10% or more of a Controlled Foreign Corporation (CFC). The GILTI inclusion (calculated on Form 8992) goes in this basket. Individual taxpayers cannot use the Section 250 deduction (that is available only to C corporations), meaning the effective tax rate on GILTI for individuals is their marginal rate — often 37%. This is a harsh basket for expat business owners.
4. Foreign Branch Income Category
Income attributable to a foreign branch of a US person. If you operate a sole proprietorship or are a partner in a partnership with foreign operations that constitute a branch, the income and taxes go here.
5. Section 901(j) Income (Sanctioned Countries)
Income from countries subject to US sanctions (currently Cuba, Iran, North Korea, Syria, and certain regions). No FTC is allowed for taxes paid to these countries.
Practical Tip: Most Employed Expats File Two Form 1116s
If you are a salaried employee in a foreign country who also has foreign investment accounts, you will typically file two Form 1116s: one for general category (your salary income and the income tax paid on it) and one for passive category (your investment income and any withholding tax on dividends or interest). Each basket has its own limitation calculation.
Foreign Tax Credit Limitation: How IRC §904 Caps Your Credit
The foreign tax credit limitation is the single most important concept to understand when claiming the FTC. Under IRC §904(a), your credit for each basket is capped at the amount of US tax attributable to your foreign-source income in that basket. The limitation formula is:
Foreign Tax Credit Limitation = US Tax Liability × (Foreign-Source Taxable Income in Basket ÷ Worldwide Taxable Income)
In plain terms, the foreign tax credit limitation means you cannot credit more foreign tax than the US would have charged on the same income. If your effective US tax rate on $100,000 of income is 18%, your FTC limitation is $18,000 — even if you paid $40,000 to the UK. The excess $22,000 becomes a carryforward.
Why the Limitation Exists
Congress enacted the foreign tax credit limitation to prevent taxpayers in high-tax countries from using excess foreign credits to offset US tax on US-source income. Without the cap, an expat paying 45% UK tax could use the excess to shelter US investment income from US tax entirely — effectively letting a foreign government subsidize a US tax reduction. The basket system (separate limitations per income category) further prevents cross-subsidization between income types.
Key Nuances of the Foreign Tax Credit Limitation
Important nuances of the limitation:
- Sourcing rules matter: The US has its own rules for determining whether income is US-source or foreign-source (IRC §861-865). Your salary earned while physically working in London is foreign-source. But a US-source pension or Social Security payment is US-source, even if you receive it while living abroad. Incorrect sourcing is the #1 reason the IRS adjusts FTC claims.
- Deduction allocation reduces the numerator: Certain deductions (like the standard deduction or itemized deductions) must be allocated and apportioned between US-source and foreign-source income under Treas. Reg. §1.861-8, reducing the foreign-source numerator and tightening the limitation. For 2026, the standard deduction is $15,700 (single) or $31,400 (married filing jointly).
- Worldwide income is the denominator: The larger your worldwide income, the higher the limitation — which is why adding US-source income can actually help your FTC by raising the denominator.
- The limitation is computed separately for each basket: You cannot combine your general category limitation with your passive category limitation. Each Form 1116 has its own limitation calculation, and excess credits in one basket cannot offset a shortfall in another.
- The high-tax kickout rule: Under IRC §904(d)(2)(B), if passive income is taxed by a foreign country at a rate exceeding the highest US tax rate (37% for 2026), that income is "kicked out" of the passive basket and reclassified into the general category basket. This prevents artificially inflating the passive basket limitation. The high-tax kickout applies automatically — you cannot elect out of it.
Worked Example: $100,000 Salary in the UK
Let's walk through a complete example for a US citizen working in London in 2026.
Facts:
- Single, no dependents, no US-source income
- UK salary: £78,000 (approximately $100,000 at $1.28/£)
- UK income tax paid (PAYE): £23,432 (approximately $30,000 — effective rate ~30%)
- UK National Insurance contributions: £5,484 ($7,020) — NOT creditable for FTC
- No UK capital gains, no UK dividends
- US filing status: Single, standard deduction of $15,700 (2026)
Step 1: Calculate US Tax Liability
- Worldwide gross income: $100,000
- Standard deduction: ($15,700)
- Taxable income: $84,300
- US tax before credits (2026 brackets): approximately $14,768
Step 2: Calculate FTC Limitation (General Category)
- Foreign-source taxable income: $100,000 − $15,700 (allocated standard deduction) = $84,300
- Worldwide taxable income: $84,300
- Limitation ratio: $84,300 ÷ $84,300 = 100% (all income is foreign-source)
- FTC Limitation: $14,768 × 100% = $14,768
Step 3: Determine Credit and Carryforward
- Creditable foreign taxes paid: $30,000 (UK income tax only — NICs excluded)
- FTC allowed (lesser of tax paid or limitation): $14,768
- US tax after FTC: $14,768 − $14,768 = $0 owed to IRS
- Excess FTC: $30,000 − $14,768 = $15,232 carryforward
Result:
You owe zero US tax and have $15,232 in excess Foreign Tax Credits that carry forward for 10 years. These carryforward credits can offset US tax in future years — for example, if you move back to the US and have foreign-source investment income, or if you have a year with mixed US and foreign income.
Higher Income Example
If the same expat earned $200,000 in the UK with an effective UK tax rate of 35% ($70,000 UK tax paid), the US tax on $200,000 would be approximately $39,110. The FTC eliminates the entire US liability, generating a $30,890 carryforward ($70,000 − $39,110). At higher UK income levels approaching the 45% additional rate threshold (£125,140 / ~$160,000), the excess credits become even larger.
Foreign Tax Credit Carryback (1 Year) and Carryforward (10 Years)
When your creditable foreign taxes exceed the FTC limitation (as in our example above), the excess does not disappear. Under IRC §904(c), excess credits can be carried back 1 year or forward 10 years. Understanding these rules is critical for maximizing the value of your foreign tax credit.
Foreign Tax Credit Carryback: How to File
The foreign tax credit carryback allows you to apply excess credits from the current year to the immediately preceding tax year. If you had US tax liability in that prior year, the carryback generates a refund. Here is the step-by-step procedure:
- File Form 1040-X (Amended Return): Prepare an amended return for the prior tax year. You can e-file Form 1040-X for the current and two preceding tax years, or mail it for older years.
- Attach a revised Form 1116: Complete a new Form 1116 for the prior year showing the carryback credits in Part IV. The carryback must stay within the same FTC basket — you cannot carry back general category credits to offset passive category tax in the prior year.
- Complete Schedule B of Form 1116: Schedule B (Reconciliation of Foreign Tax Credit Carryovers) tracks your carryback and carryforward amounts by year and by basket. This schedule is the IRS's official record of your credit history. Include it with both the amended prior-year return and your current-year return.
- Include a statement citing IRC §904(c): Attach a statement explaining that the amended return reflects a foreign tax credit carryback under IRC §904(c), specifying the carryback amount and the basket category.
- Allow 8-12 weeks for processing: IRS processing of Form 1040-X typically takes 8 to 12 weeks. The refund will include any overpayment resulting from the carryback.
Foreign Tax Credit Carryforward: 10-Year Window
Excess credits that are not carried back (or cannot be fully used in the carryback year) carry forward for up to 10 tax years. Credits are applied in chronological order — FIFO (first in, first out), meaning the oldest credits are used first. If not used within 10 years from the year the excess was generated, they expire permanently.
Important: GILTI (Section 951A) foreign tax credits cannot be carried back or forward. They must be used in the year they arise or they are lost. This makes GILTI planning particularly critical for expat business owners with CFCs.
Strategic use of carryforwards: Many expats accumulate years of excess FTC carryforwards while living in high-tax countries. When they repatriate to the US, they may have foreign-source passive income (foreign dividends, interest, rental income from a property they kept abroad) that generates US tax. The carryforward credits can offset this tax, providing a valuable benefit for several years after the move home.
Common mistake: Failing to track carryforwards year by year. The IRS does not track your carryforwards for you. If you switch tax preparers or use different software each year, carryforward credits can be lost. Keep a running spreadsheet showing: (1) year the excess was generated, (2) amount per basket, (3) amount used each subsequent year, (4) remaining balance. Form 1116 Schedule B and Part IV track this formally on the return — complete them meticulously every year.
| Year |
Foreign Tax Paid |
FTC Limitation |
Credit Used |
Excess Generated |
Carryforward Balance |
| 2024 | $30,000 | $14,768 | $14,768 | $15,232 | $15,232 |
| 2025 | $32,000 | $15,500 | $15,500 | $16,500 | $31,732 |
| 2026 (repatriate) | $0 | $3,200 | $3,200 (from 2024 excess) | $0 | $28,532 |
| 2027 | $0 | $3,400 | $3,400 (from 2024 excess) | $0 | $25,132 |
In this example, the expat repatriates in 2026 but continues to receive foreign-source passive income (dividends from UK shares). The accumulated carryforward credits from 2024 and 2025 offset US tax for multiple years after the move home. The 2024 credits (oldest first) are consumed before the 2025 credits.
When the FTC Beats the FEIE (and Vice Versa)
US expats have two main tools to avoid double taxation: the FTC (Form 1116) and the FEIE (Form 2555). You cannot use both on the same income — but you can use the FEIE for some income and the FTC for other income. Here is when each tool is superior:
| Scenario |
Better Choice |
Why |
| Living in a high-tax country (UK, Canada, Germany, France, Australia, Japan) | FTC | Foreign tax exceeds US tax → FTC eliminates US bill AND generates carryforwards |
| Living in a no-tax or low-tax country (UAE, Singapore, Hong Kong, Bermuda, Cayman Islands) | FEIE | Little or no foreign tax to credit → FEIE excludes income from US tax entirely |
| Earning under $132,900 in a moderate-tax country (15-22% effective rate) | FEIE | FEIE may fully exclude the income; FTC would leave some US tax due |
| Earning well above $132,900 | FTC | FEIE cap is $132,900 — income above this is taxed. FTC has no dollar cap |
| Significant investment/passive income alongside earned income | FTC | FEIE only covers earned income. FTC covers all income categories |
| Self-employed in a no-tax country | FEIE | FEIE eliminates income tax, though self-employment tax (15.3%) still applies on first $168,600 (2026) |
| Plan to move back to the US in 1-3 years | FTC | Accumulated carryforwards are useful after repatriation; revoking a prior FEIE election locks you out for 5 years |
Critical warning about the FEIE revocation rule: If you elect the FEIE and later revoke it (to switch to the FTC), you cannot re-elect the FEIE for 5 tax years without IRS approval. This is a one-way door. If you are unsure whether you will stay abroad long-term, start with the FTC — you can always switch to the FEIE later without penalty, but switching back is restricted.
How to File Form 1116: Step by Step
Form 1116 is four pages and can be intimidating, but the logic is straightforward once you understand the flow:
- Choose the category (basket): Check the box at the top of Form 1116 — Section E (General Category) for employment income, Section A (Passive) for investment income. If you have income in both baskets, file a separate Form 1116 for each.
- Part I — Taxable Income or Loss from Sources Outside the US: List each country where you earned income and paid taxes. Enter gross income, then allocable deductions, to arrive at net foreign-source taxable income for the basket. This is the numerator in the limitation formula.
- Part II — Foreign Taxes Paid or Accrued: For each country, enter the amount of tax paid in the foreign currency, the exchange rate used, and the US dollar equivalent. Specify whether you are using the paid or accrued method. This determines your total creditable foreign tax for the basket.
- Part III — Figuring the Credit: This section performs the limitation calculation. Line 3e is your foreign-source taxable income (from Part I). Line 5 is your worldwide taxable income. Line 7 is the limitation ratio (Line 3e ÷ Line 5). Line 21 applies this ratio to your total US tax liability to produce the maximum allowable FTC. Your actual credit is the lesser of your creditable taxes (Part II) and the limitation (Line 21).
- Part IV — Summary of Credits from Separate Parts III: If you filed multiple Form 1116s (e.g., general + passive), this section adds them up. It also tracks carryback/carryforward from prior years. The total FTC flows to Form 1040, Schedule 3, Line 1.
The $300/$600 Simplified Election
If your situation is simple, you may not need Form 1116 at all. Under IRC §904(j), you can claim the FTC directly on Form 1040 (Schedule 3, Line 1) without filing Form 1116 if all of the following are true:
- All of your creditable foreign taxes are reported on a payee statement (1099-DIV, 1099-INT, or Schedule K-1)
- Your total creditable foreign taxes are $300 or less ($600 if married filing jointly)
- All of the foreign tax is in the passive category (no general category or GILTI)
- All income giving rise to the foreign tax is qualified passive category income (e.g., dividends, interest)
This simplified election is typically used by US residents with foreign stock holdings that generate small amounts of foreign dividend withholding tax. It is rarely useful for expats living abroad, who almost always have general category income (salary) and taxes exceeding $300.
Common FTC Mistakes That Trigger IRS Notices
The Foreign Tax Credit is one of the most frequently adjusted items on expat returns. Here are the mistakes we see most often at Zenith:
- Crediting non-income taxes: UK National Insurance, Canadian CPP/QPP, German Solidaritätszuschlag (actually does qualify — it is a surcharge on income tax), French CSG/CRDS. The most common error is crediting UK NICs or Canadian CPP. These are social insurance contributions, not income taxes, and the IRS will disallow them with interest and penalties.
- Incorrect income sourcing: Allocating US-source income as foreign-source inflates the FTC limitation. Days worked in the US while employed abroad must be US-sourced. Remote work for a foreign employer while physically in the US is US-source. The IRS cross-references W-2 and travel records.
- Cross-crediting between baskets: Using excess general category credits to offset passive category tax (or vice versa). Each basket is independently limited. Filing a single Form 1116 combining all income types is incorrect.
- Double-dipping with FEIE: Claiming both the FEIE and FTC on the same income. If you exclude $132,900 via Form 2555, you cannot also claim an FTC for taxes paid on that $132,900. The FTC applies only to income that remains subject to US tax after the exclusion.
- Failing to convert to USD correctly: Using the exchange rate from the date of payment rather than the average annual rate (for accrual method) or the date-of-payment rate (for cash method). The IRS has specific guidance — most expats use the yearly average exchange rate published by the IRS.
- Not allocating the standard deduction: The standard deduction must be allocated between US-source and foreign-source income, reducing the foreign-source numerator. Many software programs handle this automatically, but manual filers often miss it.
- Ignoring treaty provisions: Some tax treaties change how income is sourced or which taxes are creditable. For example, the US-UK treaty allows credit for UK income tax even in certain situations where US domestic law might source the income to the US. Missing treaty benefits can mean paying more than necessary.
- Losing carryforwards: Switching tax preparers or software without carrying over the Schedule of Excess FTC (Part IV of Form 1116) from prior years. These credits expire after 10 years — every lost year is lost money.
Is the Foreign Tax Credit Refundable?
No — the Foreign Tax Credit is a nonrefundable credit. This means it can reduce your federal US income tax liability to zero, but it cannot generate a cash refund on its own. If you paid $30,000 in UK income tax and your US tax liability is only $14,768, the FTC wipes out your US tax entirely, but the IRS will not send you a check for the remaining $15,232 difference.
However, "nonrefundable" does not mean the excess is worthless. Excess credits have two escape valves:
- Carryback refund: If you carry back excess credits to a prior year via Form 1040-X and that prior year had US tax liability, the amended return generates a refund of the prior year's overpayment. This is an indirect way the FTC produces a refund — not from the current year, but from reducing a prior year's tax.
- Carryforward offset: Excess credits carry forward for 10 years. In any future year where you have US tax liability and foreign-source income, the carried-forward credits reduce that year's tax. This is particularly valuable after repatriation.
By contrast, some other tax credits are refundable — for example, the Earned Income Tax Credit (EITC) and the refundable portion of the Child Tax Credit (CTC) can generate a refund even if you owe zero tax. The FTC does not work this way. Understanding that the foreign tax credit is nonrefundable is essential for planning: if you are in a high-tax country, you will almost certainly generate excess credits every year, and the value of those credits depends entirely on whether you can use them within the 10-year carryforward window.
Foreign Tax Credit and the Alternative Minimum Tax (AMT)
Many US expats overlook the interaction between the Foreign Tax Credit and the Alternative Minimum Tax (AMT). If you are subject to AMT, you must compute a separate FTC limitation using AMT rules — and the result can be significantly different from your regular tax FTC.
Under the AMT system, you recalculate your foreign tax credit limitation using Alternative Minimum Taxable Income (AMTI) instead of regular taxable income. The formula is the same structure:
AMT FTC Limitation = Tentative Minimum Tax × (AMT Foreign-Source Income ÷ AMT Worldwide Income)
The key differences:
- AMTI adds back certain deductions: State and local tax deductions (SALT), certain miscellaneous deductions, and some depreciation adjustments are added back for AMT purposes, changing both the numerator and denominator.
- Different exemption amounts: For 2026, the AMT exemption is $90,100 (single) or $140,200 (married filing jointly). Phase-out begins at $609,350 (single) or $1,218,700 (MFJ).
- Separate Form 1116: You must complete a separate Form 1116 calculated under AMT rules. Most tax software handles this automatically, but manual filers frequently miss it.
- The AMT FTC cannot exceed the AMT itself: Your AMT foreign tax credit is limited to the amount of your tentative minimum tax minus the tentative minimum tax computed without foreign-source income.
When AMT matters most for expats: AMT is most likely to affect expats who exercise incentive stock options (ISOs) while abroad, have significant long-term capital gains, or claim large itemized deductions that get added back for AMT. If you live in a high-tax country and your regular FTC already eliminates your US tax, the AMT FTC typically also eliminates the AMT — but only if you complete the AMT Form 1116 correctly. Failing to claim the AMT FTC is one of the most expensive mistakes we see.
FTC for Specific Countries: Key Considerations
United Kingdom
UK income tax (basic rate 20%, higher rate 40%, additional rate 45%) fully qualifies. UK capital gains tax qualifies. UK National Insurance contributions (Class 1, Class 2, Class 4) do NOT qualify. The US-UK tax treaty contains a "saving clause" that generally preserves the US right to tax its citizens, so the FTC is the primary relief mechanism. UK council tax does not qualify.
Canada
Canadian federal income tax (15%-33%) and provincial income tax (5.06%-25.75% depending on province) both qualify. Combined marginal rates can reach 53.53% (Ontario), generating very large FTC carryforwards. Canadian CPP/QPP contributions do NOT qualify (covered by the US-Canada Social Security Totalization Agreement). Canadian EI premiums do NOT qualify. Canadian capital gains tax qualifies (only 50% of gains are taxable in Canada, but the tax paid on that 50% is fully creditable).
Germany
German Einkommensteuer (income tax, 14%-45%) qualifies. The Solidaritätszuschlag (5.5% surcharge on income tax) also qualifies — it is treated as an income tax. German church tax (Kirchensteuer, 8-9% of income tax) qualifies. German social insurance contributions (Rentenversicherung, Krankenversicherung) do NOT qualify. Germany has a progressive rate structure that generates significant carryforwards for higher earners.
Australia
Australian income tax (19%-45%) qualifies. The Medicare levy (2%) and Medicare levy surcharge (1%-1.5%) present a gray area — the Medicare levy is generally treated as an income tax eligible for credit, but the surcharge may not qualify. Australian superannuation contributions are complex: employer super guarantee contributions are not a creditable tax, but the 15% tax on super fund earnings within the fund may be creditable if you take the position that it is an income tax paid by you through the fund. This is an area requiring specialist advice.
FTC vs FEIE: A Side-by-Side Comparison
| Feature |
FTC (Form 1116) |
FEIE (Form 2555) |
| Mechanism | Dollar-for-dollar credit against US tax | Excludes income from US taxable income |
| Income limit | No limit | $132,900 (2026) |
| Income types | All: earned, passive, capital gains | Earned income only (no investments) |
| Carryover | 1-year back, 10-year forward | None — use it or lose it each year |
| Best for | High-tax countries (20%+ effective rate) | No-tax / low-tax countries |
| Effect on brackets | None — income remains in higher brackets | Excluded income "stacks" — pushes remaining income into higher brackets |
| Revocation penalty | None — can switch freely | 5-year lockout from re-election |
| Self-employment tax impact | No SE tax reduction | No SE tax reduction |
| Filing complexity | Higher (separate Form 1116 per basket) | Lower (single Form 2555) |
Frequently Asked Questions
Can I claim both the FTC and the FEIE?
Yes, but not on the same income. You can use the FEIE to exclude up to $132,900 of earned income and then use the FTC on any remaining income that was not excluded. For example, if you earn $200,000 and exclude $132,900 via the FEIE, you can claim the FTC on the remaining $67,100 of earned income plus any passive income. However, you cannot credit the foreign taxes attributable to the excluded $132,900.
What if I paid more in foreign taxes than I owe in US taxes?
The excess foreign tax credits carry back 1 year and forward 10 years. You will not get a refund of the excess — the FTC cannot make your US tax liability negative. But the carryforward is valuable: it can offset US tax in future years, particularly after repatriation or in years when you have US-source income alongside foreign income.
Do I use the exchange rate on the date I paid the tax?
It depends on your method. If you elected the cash (paid) method, use the exchange rate on the date the tax was actually paid. If you elected the accrual method, the IRS accepts the yearly average exchange rate. Most expats use the accrual method with the IRS-published yearly average rate because it is simpler and more consistently applied. The IRS publishes annual average exchange rates at irs.gov/individuals/international-taxpayers/yearly-average-currency-exchange-rates.
Can I take a deduction instead of a credit for foreign taxes?
Yes, under IRC §164(a)(3), you can deduct foreign income taxes as an itemized deduction on Schedule A instead of claiming the credit on Form 1116. However, this is almost never beneficial. A $10,000 deduction at the 24% bracket saves $2,400; a $10,000 credit saves $10,000. The only scenario where the deduction might be better is if you have foreign taxes that are not creditable (like certain social insurance taxes in treaty countries) and you are already itemizing deductions.
What happens to my FTC carryforwards if I move back to the US?
Your carryforwards survive repatriation and remain available for up to 10 years from the year the excess was generated. After moving back, they can offset US tax on any foreign-source income you continue to receive — foreign dividends, rental income from property abroad, foreign pension payments, capital gains on foreign investments, or income from a foreign business. They apply only within their original basket (general or passive).
Is UK National Insurance creditable as a Foreign Tax Credit?
No. UK National Insurance contributions (NICs) are classified as social insurance taxes, not income taxes, and do not qualify for the FTC. However, NICs are covered by the US-UK Social Security Totalization Agreement, which prevents double social insurance taxation. If you are employed in the UK by a UK employer and expect to work there for 5+ years, you generally pay only UK NICs and are exempt from US Social Security/Medicare. You need a Certificate of Coverage from the UK to claim the exemption.
Can self-employed expats use the FTC to reduce self-employment tax?
No. The FTC only offsets income tax, not self-employment tax. Self-employment tax (15.3% on net earnings up to $168,600 for 2026, plus 2.9% Medicare on all net earnings) is separate. However, if you live in a country that has a Social Security Totalization Agreement with the US (about 30 countries including the UK, Canada, Germany, France, Australia, Japan), you may be exempt from US self-employment tax if you are paying into the foreign country's social security system. Without a totalization agreement, you pay self-employment tax to the US in addition to any foreign social insurance taxes.
How does the FTC work with GILTI for expat business owners?
If you own 10% or more of a Controlled Foreign Corporation (CFC), you may have GILTI inclusions (IRC §951A). These go in the Section 951A basket on a separate Form 1116. Individual taxpayers cannot use the IRC §250 deduction (available only to C corps), so the effective US tax rate on GILTI can be up to 37%. Foreign taxes paid by the CFC can be credited, but only 80% of the taxes are allowed as a credit (the 20% haircut under IRC §960(d)). This makes GILTI the most punitive area of the FTC for expat entrepreneurs. Planning with a check-the-box election or other structural solutions is critical.
Is the Foreign Tax Credit refundable?
No. The Foreign Tax Credit is a nonrefundable credit — it can reduce your US federal income tax to zero but cannot produce a cash refund on its own. However, excess credits are not lost: they carry back 1 year (which can generate a refund of prior-year tax via Form 1040-X) and carry forward 10 years. The only scenario where the FTC indirectly produces a refund is through the carryback mechanism to amend a prior year's return.
What is the foreign tax credit limitation and how is it calculated?
The foreign tax credit limitation (IRC §904(a)) caps the FTC at the amount of US tax attributable to your foreign-source income. The formula is: US Tax Liability × (Foreign-Source Taxable Income ÷ Worldwide Taxable Income). For example, if your US tax is $20,000 and 80% of your income is foreign-source, the limitation is $16,000 — even if you paid $30,000 in foreign taxes. The excess $14,000 becomes a carryforward. The limitation is calculated separately for each FTC basket (general, passive, GILTI, foreign branch).
How do I carry back Foreign Tax Credits to a prior year?
To carry back excess FTC to the prior year, file Form 1040-X (Amended Return) for that prior year with a revised Form 1116 showing the carryback credits in Part IV. Attach Schedule B of Form 1116 (Reconciliation of Foreign Tax Credit Carryovers) to document the carryback amounts. Include a statement citing IRC §904(c). The carryback must stay within the same basket — you cannot carry back general category credits to offset passive category tax. Processing takes 8-12 weeks, and any overpayment is refunded.
What is the $300/$600 de minimis election for the Foreign Tax Credit?
Under IRC §904(j), if your total creditable foreign taxes are $300 or less ($600 married filing jointly), all taxes are in the passive category, and all taxes are reported on payee statements (1099-DIV, 1099-INT, or Schedule K-1), you can claim the FTC directly on Form 1040 (Schedule 3, Line 1) without filing Form 1116. This simplified election is mainly useful for US residents with small amounts of foreign dividend withholding tax — it rarely applies to expats who have general category income and taxes exceeding $300.
Does the Foreign Tax Credit affect the Alternative Minimum Tax?
Yes. If you are subject to AMT, you must compute a separate FTC limitation using AMT rules and Alternative Minimum Taxable Income (AMTI). The AMT FTC is calculated on a separate Form 1116 using AMTI figures, which add back deductions like SALT. For 2026, AMT exemptions are $90,100 (single) or $140,200 (MFJ). Most tax software computes this automatically, but failing to claim the AMT FTC when filing manually is one of the most expensive errors for expats.
Can I claim the Foreign Tax Credit on Form 1116 for foreign taxes on investment income?
Yes. Foreign taxes on investment income — dividends, interest, capital gains, rental income, and royalties — go in the passive category basket on Form 1116. You file a separate Form 1116 for passive income (Category A) alongside your general category Form 1116 for employment income (Category E). The most common example is foreign dividend withholding tax: if you hold UK shares and 15% is withheld on dividends under the US-UK treaty, that withholding tax is creditable in the passive basket. Rental income taxes paid to foreign countries also go in this basket.
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