UK Salary, UK Dividends: Why Your Form 1116 Credit Cannot Cross Over

Reviewed by an IRS Enrolled Agent who is also ACCA-qualified. Last updated: 2 November 2026.

US law sorts foreign income into separate categories before it works out any credit, and a credit earned in one category can never relieve US tax in another. For an American living in the UK that means UK salary sits in the general category, UK dividends sit in the passive category, and the surplus credit thrown off by a heavily taxed salary cannot touch the US tax on lightly taxed dividends. Working out which category each source belongs to is the easy part. What you can still do once a credit is stranded is where most of the money is quietly lost.

Key takeaways

• UK employment income is general category income; UK dividends are passive category income by default.
• Each category has its own limit, its own Form 1116 and its own carryover pool. Surplus relief never crosses between them.
• The statute lists four categories. Form 1116 carries seven check-boxes. Treating the boxes as statutory categories is a common and expensive mistake.
• A stranded credit runs on three different clocks, routinely collapsed into a single "one back, ten forward" line that is only part of the picture.
• The high-tax kickout is not a contest between a UK headline rate and a US headline rate, whatever most published guidance says.

Where UK salary and UK dividends actually sit

The split comes from section 904(d) of the Internal Revenue Code, and the Instructions for Form 1116 define the two categories that matter to almost every American in Britain.

General category income is the residual class, and it is where earned income lands. The instructions list "Wages, salary, and overseas allowances of an individual as an employee" squarely within it. In practice that captures your PAYE salary, bonuses, directors' fees, self-employment profits and partnership profits.

Passive category income "consists of passive income and specified passive category income", and passive income "generally includes dividends, interest, royalties, rents, annuities". UK and offshore dividends, bank and gilt interest, most royalties and passively held rental profits belong here.

Two consequences follow immediately, and both are structural rather than discretionary:

• You file more than one Form 1116. The instructions are explicit: "Use a separate Form 1116 to figure the credit for each category of foreign source income listed above Part I of Form 1116." A salaried American in London with a UK brokerage account files two.
• The simplified route is closed to you. The election that lets some filers claim a small credit without Form 1116 at all is available only where every item of foreign income is passive. Any UK wage income rules it out permanently.

Separately, not every UK tax on your payslip is creditable at all — National Insurance is handled by the totalisation agreement instead. See which UK taxes are actually creditable on a US return.

Four categories in the statute, seven boxes on the form

This is the single most misread feature of Form 1116, and almost no published guide reconciles it.

Section 904(d)(1) provides that the limitation "shall be applied separately with respect to" four classes of income: amounts included under section 951A, foreign branch income, passive category income, and general category income. Four.

Form 1116 carries seven check-boxes above Part I, lettered a to g: section 951A category income, foreign branch category income, passive category income, general category income, section 901(j) income, certain income re-sourced by treaty, and lump-sum distributions.

The gap is not an error. Boxes e, f and g are not section 904(d)(1) categories at all — they are separate limitations imposed by other provisions: the sanctioned-country rule, treaty re-sourcing, and the lump-sum distribution rule. The cost of not knowing runs both ways. Count the boxes and you go hunting for statutory categories your income cannot occupy. Learn the statutory four and you miss box f — which is precisely where a treaty claim on US-source income taxed by HMRC has to go. If a treaty article re-sources income in your case, it needs its own form and its own limit; our note on re-sourcing income by treaty covers the mechanics.

Why it is almost always the passive basket that runs short

The arithmetic of a normal UK tax position pushes the two baskets in opposite directions.

UK employment income is taxed at 20%, 40% and 45% across the bands, with the personal allowance of £12,570 withdrawn at £1 for every £2 of income above the £100,000 personal allowance taper threshold — pushing the effective rate on that slice well above the headline 40%. Set against US rates, a UK salary of any size usually generates more creditable UK tax than the US tax on the same income. The general basket overflows.

UK dividends are taxed quite differently. After the £500 dividend allowance, the rates are 10.75%, 35.75% and 39.35% depending on which band the dividend falls in. For most people the dividend rate applied is materially below the rate on their salary, so the UK tax available to credit is thinner — while the US still taxes that dividend income. The passive basket runs short.

So the typical outcome is not a shortage of credit overall. It is a surplus sitting uselessly in the general basket while a genuine US liability goes unrelieved in the passive one. Section 904(d) is working exactly as designed — it exists to stop heavily taxed income being blended with lightly taxed income to manufacture relief. That does not make the bill smaller, but it does tell you to stop looking for a way across and start looking along the timeline instead.

A stranded credit has three clocks, not one

Almost every guide stops at "carry it back one year, forward ten" and moves on. That line conflates three statutory periods that do different jobs and expire on different dates. If you are trying to recover a credit you did not use, you need to know which one you are relying on.

1. The section 904(c) carry periods — one year back, then ten years forward. The Form 1116 instructions state it directly: "You can carry back 1 year and then forward 10 years any foreign tax you paid or accrued to any foreign country or U.S. territory ... on income in a separate category that is more than the limitation." Three limits travel with it, and they matter more than the headline:

• The carry stays inside its own category. A general-basket carryforward from your UK salary will only ever meet general-basket limitation in a later year. It never becomes available against dividend income.
• The section 951A (GILTI) category gets nothing at all — no carryback and no carryforward. This is why any careful statement of the periods has to be qualified rather than absolute.
• The period is fixed. In the instructions' own words, it "can't be extended even if you are unable to take a credit in 1 of the intervening years". There is also no carryback into a year in which you deducted foreign taxes rather than crediting them.

2. The section 6511(d)(3) refund window — ten years. Where a refund claim is attributable to creditable foreign taxes, the statute substitutes a ten-year period for the ordinary three-year period of section 6511(a). The detail people get backwards is the measuring year: the ten years run from the due date of the return for the year in which the foreign taxes were actually paid or accrued, not from the US year you are amending. Get that the wrong way round and you will either abandon a live claim or file a dead one.

3. The section 6511(d)(4) carryback claim — three years. A claim for a carryback of an unused credit does not share the clock above. It runs on its own rule, giving three years after the due date of the return for the year the credit went unused, or the section 6511(c) period, whichever expires later.

These are genuinely separate windows: a claim for the foreign taxes themselves and a claim for a carryback of unused credit can be live and dead respectively on the same day. Any adviser quoting one period for both has not read the provisions.

The high-tax kickout is not a contest between two headline rates

If you have read anything else on this topic you will have met the following: UK additional-rate dividends are taxed at 39.35%, that beats the top US rate of 37%, therefore the high-tax kickout moves them from the passive basket into the general one. It is stated confidently and widely.

The Form 1116 instructions do not contain that test. What they say, in full, is that "High-taxed income is income if the foreign taxes you paid on the income (after allocation of expenses) ... exceed the highest U.S. tax that can be imposed on the income", and then refer the reader to Regulations section 1.904-4(c). There is no percentage in the rule, and no comparison of headline rates.

The difference is not pedantry. The test measures the foreign tax actually paid on that income, after expenses have been allocated to it — not a band rate from a table, which ignores the dividend allowance and the way a dividend is spread across bands. And it measures that against the highest US tax that can be imposed on that particular income, which is income-specific rather than a single number lifted from the top of the ordinary rate schedule.

A rate race between two headline numbers can therefore point the wrong way in either direction. Because the answer turns on the regulation and on the composition of your own income, it is a point to settle on your actual figures rather than from a table — and one we would expect to resolve before filing rather than after.

Choosing paid or accrued, and what that choice binds

One further election shapes everything above, and it is worth stating in the sources' own words because the commentary around it is unreliable. A cash-basis taxpayer may choose to claim the credit on an accrued basis. The instructions set out how and when: "If you report on the cash basis, you can choose to take the credit for accrued taxes by checking the 'Accrued' box in Part II on a timely filed original return. You can't make this choice on an amended return. Once you choose to do this, you must credit foreign taxes in the year they accrue on all future returns." The statute adds that once the election is made, "the credits for all subsequent years shall be taken on the same basis, and no portion of any such taxes shall be allowed as a deduction in the same or any succeeding year."

That is the accurate statement, and more useful than the label usually attached to it: the election is made on a timely filed original return, cannot be made on an amended one, and binds every future return. Coming off that basis later is a question for a licensed professional on your facts, not one to decide from a web page.

Getting this right on the return

These rules reward being deliberate at the point of filing and punish tidying up afterwards, because the clocks above run whether or not you noticed. With UK salary and UK investment income in the same year, four questions are worth settling before anything is filed: which category each source belongs to, whether a treaty article re-sources income into box f, whether the high-taxed income rule touches your dividends on your actual numbers, and whether unused credit from earlier years is still inside its carry period.

You can model the position with our calculators, and our US-UK tax specialists handle this combination day to day. Every return and every position we take is reviewed and signed off by a licensed professional before it goes anywhere — an IRS Enrolled Agent who is also ACCA-qualified. To have your own position looked at, book a consultation.

For what happens to unused credit over time, see our companion guide to the foreign tax credit carryover for US expats.

Sources

• IRS — Instructions for Form 1116
• IRS — Publication 514, Foreign Tax Credit for Individuals
• GOV.UK — Tax on dividends
• GOV.UK — Income Tax rates and Personal Allowances