FEIE or the Foreign Tax Credit in Japan: why the default choice is often wrong

The short version. Most Americans in Japan reach for the Foreign Earned Income Exclusion (Form 2555) because it’s famous. But Japan’s income tax — national 5–45%, plus a flat 10% inhabitant tax, plus the 2.1% reconstruction surtax — is high enough that at middle-to-senior salaries you’ve already paid more tax to Japan than you’d owe the US. That’s exactly the situation the Foreign Tax Credit (Form 1116) is built for: it wipes out your US bill dollar-for-dollar and lets the excess carry forward. The FEIE, by contrast, caps out, kills your ability to fund an IRA or Roth, blocks the refundable Child Tax Credit — and if you ever revoke it, you’re locked out for five years without IRS consent. This is orientation, not advice: the five-year lock-in is the single most expensive irreversible choice in this piece, and it’s the reason a good preparer earns their fee.

I’m not a tax preparer, and this is my own research, not tax advice — confirm everything against the IRS pages I link and a professional before you file. My own returns while I was in the US were done by a firm my company paid for; I filled in a questionnaire and signed. So I came at this the way most of you will: reading the actual rules to understand what someone was deciding on my behalf. Here’s what I found.

What each one actually does

The Foreign Earned Income Exclusion (Form 2555) lets you exclude qualifying foreign earned income — wages and self-employment income — up to a yearly cap. The cap is $130,000 per qualifying person for 2025 and $132,900 for 2026 (check the current threshold on the IRS page before you rely on it). Exclude your salary and it simply disappears from your US gross income. It does nothing for passive income — dividends, interest, capital gains. Japan residents usually qualify through the Bona Fide Residence Test.

The Foreign Tax Credit (Form 1116) does something different: it gives you a dollar-for-dollar credit for income tax you actually paid to Japan. A ¥5,000,000 Japanese tax bill on your salary reduces your US tax on that same salary by the equivalent dollars — not a deduction, a credit. It covers both earned and passive income (in separate “baskets”). Anything you can’t use this year carries back 1 year or forward up to 10 years (verify the exact carry rules on the current Form 1116 instructions).

You can use both in the same year — but never on the same dollars. Income excluded under the FEIE can’t also generate an FTC.

Why high-tax Japan favors the credit

Here’s the mechanism nobody spells out. Japan stacks three taxes on your income:

A salaried worker earning around ¥12,000,000 sits in the 33% national bracket, plus the 2.1% surtax on that national tax, plus 10% inhabitant tax — an effective combined burden that, as of my research, can exceed 40%; above ¥40,000,000, roughly 55%. Both figures blow past the US top marginal rate of 37%.

Think about what that means. If Japan already taxed your salary harder than the US ever would, your US tax on that salary is fully covered by the credit — and you have excess credit left over to carry forward. The FEIE can’t beat that; at best it also gets you to zero US tax, but it does so while destroying things the FTC leaves intact. When your effective Japanese rate exceeds your US marginal rate — true for most mid-to-senior salaried people here — the FTC is simply the better machine.

The traps that make the FEIE quietly expensive

The exclusion looks clean until you see what it takes with it:

• It kills IRA and Roth contributions. Excluded income isn’t “earned income” for IRA purposes. Exclude your whole salary and you have $0 of earned income — meaning $0 you’re allowed to contribute to a traditional or Roth IRA that year. If retirement contributions are part of your plan, read Roth IRA and Japan tax and 401(k) and IRA after moving to Japan before you let the FEIE zero out your contribution room.
• It blocks the refundable Child Tax Credit. Claim the FEIE and you cannot claim the refundable Additional Child Tax Credit. For a parent, that refundable portion can be worth real cash — losing it may tilt the whole decision toward the FTC even at modest income.
• The stacking rule pushes you into higher brackets. Under §911(f), the IRS treats your excluded income as filling the bottom brackets, so any remaining (non-excluded) income is taxed starting at the higher rate that sits above the exclusion — not at the ground-floor 10%. The exclusion doesn’t reset your brackets; it stacks on top of them.
• It doesn’t touch self-employment tax. If you’re self-employed, SE tax (Social Security + Medicare) is owed on gross self-employment income regardless — the FEIE doesn’t reduce it, and neither does the FTC. Worth noting so nobody assumes “excluded” means “no US tax at all.”

The five-year lock-in — the one truly irreversible choice

This is the part to slow down on.

You can revoke the FEIE for a year by attaching a statement to that year’s return. But once you revoke, you cannot re-elect the FEIE for the next five tax years without written IRS approval. Getting that approval means a formal private-letter-ruling request to the IRS Associate Chief Counsel (International), in duplicate, with a user fee — reviewed against factors like your residence history, moves between countries, and changes of employer.

So picture the common mistake: your first preparer defaults you into the FEIE because it’s the famous one. Two years later someone points out the FTC was better all along. You switch — and now you’re locked out of the FEIE for up to five years, or paying for a ruling to get back in. That’s the single most expensive accidental choice available to an overseas filer, and it’s why “just tick the FEIE box, everyone does” is bad advice. A preparer who models both before year one is cheap insurance against a five-year mistake.

Decision table by your situation

If you’re reading this in your first year out, the sequencing matters as much as the choice — pair it with your first tax year after leaving the US, because decisions you make on that first return echo for years.

One place to start if you want someone to model both forms against your actual Japanese tax before you commit is Taxes for Expats, a US–Japan expat firm — the link takes $25 off your first filing. (Full disclosure: that’s a referral link; I get a small credit if you file through it. It’s one option, not the only one — compare it against other expat preparers and pick who fits your situation.) Given that the wrong first-year election can lock you out for five years, having a professional run the comparison once is exactly the kind of cost that pays for itself.

FAQ

Can I use both the FEIE and the Foreign Tax Credit in the same year?

Yes — in the same tax year, but not on the same dollars. You could exclude part of your earned income under the FEIE and claim the FTC on other income, but you can’t claim a credit for taxes on income you’ve already excluded. In high-tax Japan, layering them rarely beats using the FTC alone, but a preparer can check.

If Japan’s tax is higher than US tax, why does anyone in Japan use the FEIE?

Mostly low earners whose effective Japanese rate is actually below their US marginal rate, or people in a transitional partial year. There’s also inertia — the FEIE is the famous one, so it gets chosen by default. For most mid-to-senior salaried filers here, that default is the wrong one, which is the whole point of running the numbers first.

Does excluding my income with the FEIE mean I can’t save in a Roth or IRA?

If you exclude all your earned income, then yes — you’d have $0 of “earned income” for IRA purposes, so no traditional or Roth contribution is allowed that year. This is one of the quietest costs of the FEIE. If retirement saving matters to you, this alone can be a reason to use the FTC instead — confirm the mechanics with a professional and against the current IRS pages.