Foreign Tax Credit vs FEIE: Which Saves More (2026)

Two tools, one problem: you owe the US tax on worldwide income

The US is one of two countries on earth (the other is Eritrea) that taxes citizens on worldwide income regardless of where they live. If you're a US citizen or green-card holder earning money abroad, you owe the IRS a return — and potentially a check — even if you haven't set foot in the US all year.

Congress provides two relief mechanisms to prevent double taxation:

• Foreign Earned Income Exclusion (FEIE) — IRC § 911. Excludes a portion of your foreign earned income from US taxable income entirely. The exclusion cap is adjusted annually for inflation (approximately $130,000 for 2025; the 2026 figure will be published in IRS Rev. Proc. 2025-32).
• Foreign Tax Credit (FTC) — IRC § 901. A dollar-for-dollar credit against your US tax liability for income taxes paid to a foreign government. No cap on the credit amount, but it's limited to the US tax attributable to your foreign-source income.

These are not interchangeable. They work differently, produce different results depending on the tax rate in your host country, and interact with each other in ways that cost expats thousands when they pick wrong.

How the FEIE works (and what it misses)

The FEIE lets you exclude foreign earned income — wages, salary, self-employment income — up to the annual cap. You elect it on Form 2555. To qualify, you must meet either:

• Bona fide residence test: you're a bona fide resident of a foreign country for an entire tax year, or
• Physical presence test: you're physically present in a foreign country for at least 330 full days during any 12-month period.

What the FEIE covers: wages, salary, professional fees, self-employment income earned abroad. Plus a housing exclusion under § 911(c) for qualifying housing expenses above a base amount.

What the FEIE does NOT cover: investment income (dividends, interest, capital gains), rental income, pension distributions, Social Security benefits, or any income earned in the US. This is the gap that catches people. A software engineer in Singapore earning $180,000 in salary plus $40,000 in investment income can exclude the salary but still owes US tax on the $40,000.

The part most people miss: excluded income is still counted in your MAGI for purposes of the 3.8% Net Investment Income Tax (IRC § 1411), IRMAA Medicare surcharges, and Roth IRA income phase-outs. The FEIE reduces your taxable income but does not reduce your MAGI. If you earn $200,000 abroad and exclude $130,000, your MAGI is still $200,000 — above the $200,000 single threshold for NIIT on any investment income you have.

How the FTC works (and why it's more powerful than it looks)

The FTC under IRC § 901 gives you a credit — not a deduction — for every dollar of income tax you paid to a foreign government. You claim it on Form 1116.

The critical mechanics:

• Dollar-for-dollar offset. $1 of UK income tax paid = $1 of US tax reduced. A deduction would only reduce taxable income; a credit reduces tax owed directly.
• Limitation formula. The credit is capped at the US tax attributable to your foreign-source income: (Foreign-source taxable income / Worldwide taxable income) × US tax liability. You can't use excess foreign credits to offset tax on US-source income.
• Carryback and carryforward. Excess credits carry back 1 year and forward 10 years under IRC § 904(c). If you're in a high-tax country, the excess credits accumulate and can offset US tax in a future year when you return stateside or move to a lower-tax jurisdiction.
• Covers all income types. Unlike the FEIE, the FTC applies to taxes paid on investment income, rental income, and capital gains — not just earned income.

The decision variable: your host country's tax rate

This is the single most important factor. Everything else is secondary.

Here's where the math breaks for FEIE in high-tax countries: if you earn $185,000 in the UK and exclude $130,000 under the FEIE, you report only $55,000 of earned income on your US return. Your US tax on that $55,000 is roughly $6,200 (single filer, 2026 brackets, after standard deduction of $15,750). But you paid $52,000 to HMRC on the full $185,000. Under the FEIE, you cannot claim a credit for the UK tax on the excluded $130,000 — IRC § 911(d)(6) explicitly prohibits it. You can only credit UK tax attributable to the non-excluded $55,000, which is roughly $15,400. Your US tax of $6,200 is wiped out, but you've wasted $36,600 of UK tax credits.

Now run the FTC instead: report all $185,000 on your US return. US tax liability (single, 2026): approximately $31,400 before credits. Claim the full $52,000 FTC. Your US liability drops to $0, and you carry forward roughly $14,000+ in excess credits for future years. Total out-of-pocket US tax: $0 under both approaches, but the FTC builds a $14,000 credit bank. The FEIE wastes $36,600.

Worked example: $185,000 salary in London — FEIE vs FTC side by side

A single US citizen, age 34, on a two-year London assignment. Annual salary: $185,000. No investment income. Standard deduction: $15,750 (2026). Filing single.

*Under FEIE, the “stacking rule” applies: your $39,250 of taxable income is taxed as though it starts at the bracket where excluded income left off, not at $0. This pushes even modest remaining income into the 22%–24% brackets, increasing the effective rate on the non-excluded portion.

The decision lever: in London, the FTC is unambiguously better. It produces the same $0 US liability but preserves $14,000+ in carryforward credits that the FEIE throws away.

When the FEIE wins: low-tax and no-tax countries

Flip the scenario. Same engineer, same $185,000 salary, but she's in Dubai (UAE). Zero local income tax.

• FTC approach: report $185,000. US tax: ~$31,400. Foreign tax paid: $0. FTC: $0. She owes the IRS $31,400.
• FEIE approach: exclude $130,000. Taxable income (after standard deduction, with stacking): ~$39,250. US tax: ~$4,400. Foreign tax paid: $0. She owes the IRS ~$4,400.

The FEIE saves her roughly $27,000 in a single year. In a zero-tax jurisdiction, there's nothing to credit — the FEIE is the only tool that reduces the bill.

The same logic applies to any country where the effective tax rate on your income is materially below US rates: Singapore (top marginal 22%, but effective rate on $185,000 is closer to 12%–15%), Hong Kong (15% flat on employment income), and certain Swiss cantonal arrangements.

Using both: FEIE + FTC on different income buckets

IRC § 911(d)(6) doesn't prohibit using both tools in the same year — it prohibits using both on the same income. You can:

1. Exclude earned income up to the FEIE cap under § 911
2. Claim the FTC on any remaining earned income above the cap
3. Claim the FTC on investment income, rental income, or other non-earned foreign-source income

When this makes sense: a US expat in a mid-tax country (effective rate 15%–22%) earning well above the FEIE cap, with significant investment income. The FEIE shelters the first ~$130,000; the FTC offsets US tax on the rest using foreign taxes paid on the non-excluded portion.

When this backfires: in a high-tax country. The FEIE wastes your most valuable foreign tax credits — the ones paid on the first $130,000 of income. Since you can't credit those, you lose dollar-for-dollar offset on income where the foreign rate was highest (because of progressive foreign brackets, the first dollars of income often carry the highest average foreign tax per dollar).

The Canada-US dual-filer scenario: why FTC dominates north of the border

An estimated 1 million+ US citizens and green-card holders live in Canada. If you're one of them, the FTC vs FEIE decision is straightforward: take the FTC.

Canadian combined federal-provincial marginal rates at $185,000 CAD:

Every Canadian province has combined marginal rates above the equivalent US bracket for the same income. The FTC wipes out the US liability entirely and generates carryforward credits in every scenario.

The treaty wrinkle: the Canada-US Tax Treaty contains a “saving clause” (Article XXIX, paragraph 2) that preserves the US right to tax its citizens as if the treaty didn't exist. This means US citizens in Canada cannot use the treaty to reduce their US filing obligation — they must file a US return and choose FEIE or FTC. The treaty does allow Canadian-resident US citizens to claim a Canadian foreign tax credit (line 40500 on the T1) for US taxes paid on US-source income, preventing the reverse double-taxation.

Bottom line for Canada: take the FTC on your US return. Let the Canadian FTC on line 40500 handle any residual US tax paid on US-source income. The FEIE wastes Canadian tax credits that are worth more than the exclusion.

The irrevocability trap: IRC § 911(e)

Once you elect the FEIE by filing Form 2555, the election remains in effect until you revoke it. If you revoke, you cannot re-elect the FEIE for five tax years without IRS consent. IRS consent is not automatic.

This creates a strategic problem for expats who move between high-tax and low-tax countries:

• Year 1–2: assigned to Singapore (low tax). FEIE is optimal. You elect it.
• Year 3: transferred to London (high tax). FTC is optimal. You revoke the FEIE.
• Year 4: company sends you back to Singapore. FEIE is optimal again — but you're locked out until Year 8.

The planning move: if there's any chance you'll move to a high-tax country within five years, consider taking the FTC from day one — even if it costs more in year one. The flexibility to switch is worth the short-term cost. Run a multi-year projection, not a single-year comparison.

NIIT and IRMAA: the FEIE doesn't help where it matters most

The 3.8% Net Investment Income Tax under IRC § 1411 applies when MAGI exceeds $200,000 (single) or $250,000 (MFJ). The FEIE exclusion reduces taxable income but does not reduce MAGI for NIIT purposes. Your excluded income is added back when calculating the NIIT threshold.

For a single expat earning $185,000 with $30,000 in investment income: MAGI is $215,000 regardless of whether the FEIE is used. NIIT applies to the lesser of $30,000 (NII) or $15,000 (MAGI excess over $200,000) = $15,000 × 3.8% = $570 in NIIT — payable under both the FEIE and FTC approaches.

The same principle applies to IRMAA (Medicare Part B/D surcharges) for expats age 65+. MAGI for IRMAA includes FEIE-excluded income. If your income crosses the IRMAA cliff at $103,000 (single) or $206,000 (MFJ), the FEIE exclusion doesn't pull you below it.

Decision framework: which election for your situation

Where the opposite is right

This article leans FTC for most readers because most US expats live in countries with higher tax rates than the US (Canada, UK, Germany, Australia, Japan, France). But the FEIE is the better tool when:

• You're in a zero-tax or very-low-tax jurisdiction and there's simply nothing to credit
• You're self-employed abroad with no employer withholding and want to minimize your quarterly estimated tax payments to the IRS
• You're earning below the FEIE cap and the host country's effective rate is under 15% — the exclusion may eliminate more US tax than the credit offsets
• You're confident you'll stay in a low-tax jurisdiction for 5+ years, so the irrevocability trap doesn't matter

The wrong move is defaulting to the FEIE because “exclusion sounds better than credit.” In tax, a credit is almost always worth more than an exclusion of the same amount. Run the numbers both ways before you file Form 2555. And if you're in a high-tax country, start with the FTC — you can always elect the FEIE later (once), but you can't easily go back.