FEIE or Foreign Tax Credit: Why Your First Choice Is the Hard One to Undo

FEIE or foreign tax credit: an introduction

Choosing the FEIE or foreign tax credit comes down to this for most Americans on UK pay: the credit usually wins, particularly with children. UK income tax normally exceeds the US tax on the same wages, so both routes often reach nil US tax on that salary. The real differences lie in refundable credits, retirement contributions and how easily you can change your mind.

This article supports our guide to the US-UK double taxation treaty. For the mechanics of each form, read our separate articles on the exclusion for Americans in the UK and Form 1116 for UK tax. Here, we look at the choice across several years.

What FEIE or foreign tax credit actually means

The Foreign Earned Income Exclusion, or FEIE, removes qualifying foreign wages from your taxable income. You claim it on Form 2555. For 2026, the IRS maximum is $132,900 per person. The foreign tax credit, by contrast, keeps the income on your return and reduces US tax by foreign tax paid. You claim it on Form 1116.

Why a one-year comparison misleads

Most comparisons run one tax year and stop. However, the two routes do not work symmetrically over time. Credits build up as carryovers, while revoking the exclusion shuts the door on it for years. Therefore, the order in which you use them matters as much as the amount each saves.

Which is better on a typical UK salary?

On a typical UK salary, the US income tax is often nil either way. The credit then pulls ahead wherever a refundable credit or an IRA contribution is in play. A family example shows the gap clearly.

A worked example

Consider a typical case. Claire, a fictional American in Manchester, earns £95,000. Her American husband has no income, and they have two young children with Social Security numbers. We assume $1.30 to the pound, so her pay is $123,500. We leave out National Insurance, pension contributions and any other income to keep the figures simple.

First, the UK side. Using the 2026 to 2027 UK bands, her income tax is £25,432, or about $33,062. Next, the exclusion route. Her whole salary falls under the cap, so her US taxable income is nil. Since she files Form 2555, she cannot claim the additional child tax credit. Her result is nil US tax and no refund.

Now the credit route. Using the 2026 joint thresholds and $32,200 standard deduction, taxable income is $91,300 and US tax is $10,460. Her UK tax removes that entirely, leaving about $22,602 to carry over. In addition, the 2026 refundable amount of $1,700 per child gives the family $3,400. So the credit route pays her $3,400 a year more.

What that gap becomes over five years

At the same figures, the difference is $17,000 over five years. Actual amounts will move with the indexed limits, the exchange rate and the children's ages. Even so, the example shows why the answer to FEIE or foreign tax credit often turns on the household, not the salary.

Why is switching away from the exclusion so costly?

If you revoke the exclusion, you generally cannot claim it again for your next five tax years without IRS approval. There is no matching lock on starting with the credit. That one-way structure is the heart of the decision.

The five-year rule

The Form 2555 instructions say a choice stays in effect until you revoke it, by a statement attached to your return. Section 911(e)(2) sets out the limit: without consent, you cannot elect again before the sixth tax year after the revocation year. Thus, a person who revokes for 2026 is generally out until 2032.

Why starting with the credit keeps both doors open

Suppose you use the credit from the start and have never elected the exclusion. You have nothing to revoke, so the exclusion is still available if your circumstances change. A move to a low-tax country is the classic example. In contrast, someone who began with the exclusion and later needs the credit may lose flexibility for years. In our experience, this asymmetry is what most people miss when weighing FEIE or foreign tax credit.

Carryovers stored in the credit years

Section 904(c) lets excess foreign tax go back one year and forward ten. In Claire's case, more than $22,000 could carry forward from one year alone. These amounts can later shelter a large bonus year or a return to the US with foreign income. However, they stay within their own category, and they can expire unused. See the Form 1116 instructions for the separate general and passive categories.

When can the exclusion still be the better answer?

The exclusion can win when UK income tax is unusually low compared with the US tax on the same income. That is uncommon on ordinary UK pay. Still, three situations deserve a closer look.

Arrival years with little UK tax

The UK tax year runs from 6 April, whereas the US year follows the calendar. In your first calendar year, UK tax on your pay can sit awkwardly against US income. The exclusion can look simpler here, but remember the lock if you later revoke. Our approach is to model the arrival year and the following five years together.

Income the UK does not tax

New arrivals may qualify for the UK's 4-year foreign income and gains regime. If foreign earnings escape UK tax under such a claim, there may be little UK tax to credit. The exclusion could then do work the credit cannot. Check the conditions on both sides, because they do not map neatly onto each other.

A later move away from Britain

A planned move to a country with low or nil income tax changes the picture. There the credit may have little to work with, so the exclusion can become the sensible route. That is one more reason not to revoke an election lightly, and to avoid burning the option early.

What else changes between the two routes?

Other parts of the return shift with your choice, including IRA room and the rate on your other income. Each of these can alter the result, so they belong in any comparison.

IRA and Roth contributions

The Form 2555 instructions warn that special rules apply to your IRA deduction if you claim the exclusion. Publication 590-A explains how excluded foreign income is treated when working out compensation. In practice, a person who excludes all their earned income may have no room to contribute. With the credit, your wages stay on the return, which can preserve that room.

The stacking rule on other income

Section 911(f) taxes your remaining income as though the excluded amount were stacked beneath it. So a dollar of US interest or rent is taxed at a higher rate than you might expect. Meanwhile, general category credit from wages does not cover passive income. Either way, investment income needs its own line in your comparison.

No double benefit on the same pay

You can use both reliefs on one return, but not on the same income. Publication 54 confirms that you cannot take a credit for tax on amounts you exclude. Above the cap, you may credit tax on the excess, after a disallowance for the excluded part. Publication 514 covers the calculation. Consequently, a higher earner using both gets a much smaller credit than the headline tax paid suggests.

How do you decide? A five-question test

We built the following test from the points above. Work through it in order, using real figures for your FEIE or foreign tax credit comparison. If two or more answers lean the same way, you have your likely answer on FEIE or foreign tax credit.

Question one: is your UK income tax above the US tax?

Compare the UK tax on your pay with the US tax on the same pay before any relief. If UK tax is higher, the credit usually removes the US tax, which points you towards the credit. If it is clearly lower, the exclusion deserves a closer look.

Question two: do you have children?

A qualifying child can make a sizeable refund available, but only without Form 2555. The Schedule 8812 instructions state the bar plainly. Children point strongly towards the credit.

Question three: will you exceed the cap?

Bonuses, share awards and pay rises can push income past $132,900. Above that, the exclusion stops helping and the disallowance rule begins to matter. A rising income therefore leans towards the credit.

Question four: do you want IRA or Roth room?

If you intend to contribute, check whether excluded income would leave you any compensation to use. This also leans towards the credit, though whether a contribution suits you is your own decision.

Question five: are you likely to leave the UK?

If a move to a low-tax country is realistic, keep the exclusion available by not electing and revoking it early. Carryovers can still help you, so write down your plans for the next five years before filing.

What if you already claim the exclusion?

Do not revoke it until you have modelled several years. A person already on Form 2555 can move to the credit, but the choice carries the lock described above. Start by finding out exactly what you elected, and when.

Check your filing history

Look through each earlier return for Form 2555 and for any revocation statement. An election carries forward until revoked, so a choice made years ago may still bind you. Also, a past revocation may already be limiting you today. These points are easy to miss when a return has changed hands between preparers.

Run both routes for the coming years

Build a simple grid for the next five tax years. Include expected pay, bonuses, children reaching or passing the qualifying age, and any planned move. Then calculate the FEIE or foreign tax credit result for each year in that grid. A single good year rarely justifies a five-year lock, but a run of them may.

Think about the accrual election

Foreign taxes can be credited on a paid or an accrued basis. The UK year runs to 5 April, so this choice affects which US year your UK tax falls in. The Form 1116 instructions describe a related exchange rate election, which needs IRS consent to revoke once made. Therefore, record your method and apply it consistently.

What records do you need to compare the two?

You need your UK payslips and tax calculations, along with your last US return. Without these, any comparison of FEIE or foreign tax credit will be guesswork. The list is short, and most of it should be on hand.

The UK papers

Gather your P60 and your P45 if you changed employer. Add any Self Assessment calculations for the UK years that overlap the US year. Your final payslip for December helps to split income by calendar year. If you work in Scotland, remember that the Scottish bands differ from those in the example above.

The US papers

Pull your last three Forms 1040, with Forms 2555 or 1116 as filed. Find any carryover schedule, since those balances have value. Finally, list your children's Social Security numbers and dates of birth. A missing number can affect credits, so sort that out early.

How US UK Tax Experts can help

US UK Tax Experts prepares US and UK returns from one file, so the two agree. We can work out both routes on your real figures and model the next five years side by side. See our treaty relief service and our US federal returns service. The choice stays yours, and we set out the numbers behind it.

Conclusion

For most Americans on UK pay, the credit gives the same nil US tax on wages, plus better access to refundable credits and retirement room. It also preserves your options. The exclusion still has its place, but revoking it carries a five-year cost. So the right question on FEIE or foreign tax credit is not only what saves most this year. It is also which choice leaves you free next time.

Contact us

To compare your own figures, email hello@usuktaxexperts.com or use our contact page. Send your salary, your family details and what you claimed last year. We reply within one working day.