Who We Help Tax Help for Americans Living in the UK

Tax Help for Self-Employed Expats

You Live in the UK. We Handle U.S. and UK Tax.

For U.S. citizens and green card holders living in the UK. Between HMRC, FBAR, ISAs, and UK pensions, two tax systems overlap, but the treaty and Foreign Tax Credit usually offset your U.S. bill, and keeping both sides right is what we take on.
Couple embracing on Westminster Bridge in London with the Elizabeth Tower behind them.

We Handle Your U.S. and UK Taxes Together.

You Earn in the UK, Unsure About the IRS

Salary, self-employment, or rental income here, and you are unsure how to report it and claim the FTC.

 You assume a higher UK tax means no U.S. bill, but you are not sure you still have to file.

You're Unsure How ISAs and Pensions Are Taxed

Your ISA is tax-free in the UK, but the IRS taxes it, and the funds inside may count as PFICs.

A workplace pension or SIPP raises FBAR and Form 8938 questions you cannot answer.

You File Two Returns on Two Calendars

You file UK Self Assessment with HMRC and a U.S. return, and have to convert GBP into USD.

Overlapping deadlines and a UK tax year that runs from April to April muddle the timing.

You've Let U.S. Filing Slip

You kept up with UK Self Assessment, but your U.S. returns fell behind, and now the penalties worry you.

You want a penalty-free way back without it derailing your life here.

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Our U.S. and UK Tax Guides

Life in the UK is about more than tax. Our guide to living in the UK as an American covers the whole move, from visas to healthcare to both tax returns. Here are the topics it goes into most deeply.

Why Two Tax Systems Rarely Mean Double Tax

Filing from the UK usually means little or no U.S. tax, because reliefs and the treaty prevent double taxation. Our guide to U.S. expat taxes in the UK covers the full U.S. return, our guide to the UK tax system explains the HMRC side, and our U.S.-UK tax treaty guide breaks down which country taxes what.

Why the IRS Taxes Your ISA

An ISA is tax-free in the UK, but the IRS taxes the interest, dividends, and gains, and the funds inside are often PFICs that need Form 8621. Our guide to ISA reporting explains what applies, and our Q&A on ISAs and PFIC rules covers the fund question in detail.

How UK Pensions and NI Affect Your U.S. Tax

Workplace pensions and SIPPs usually need FBAR and often Form 8938 reporting, and the treaty can shelter growth. National Insurance ties into U.S. Social Security through a totalization agreement. Our guide to UK pensions and SIPPs and our U.S.-UK totalization agreement guide explain both.

U.S. Rules for Freelancers and Directors

Freelancing in the UK brings Schedule C and self-employment tax questions, and running a UK limited company adds Form 5471 and anti-deferral rules. Our guides to being self-employed in the UK and to owning a UK limited company cover the U.S. rules that apply on top.

How UK Property Is Taxed on Your U.S. Return

UK rental income goes on your U.S. return with the Foreign Tax Credit, and a sale brings UK and U.S. capital gains rules into play. Our guide to UK rental income for landlords and our guide to UK capital gains tax on property show how each is reported.

Coordinating Self Assessment and Your U.S. Return

Filing a U.S. return alongside UK Self Assessment means converting GBP to USD and working around two calendars, and quarterly digital reporting started on 6 April 2026 for anyone with over £50,000 of self-employment or property income. Our guide to UK Self Assessment and our Making Tax Digital guide walk through both.

Why Two Tax Systems Rarely Mean Double Tax

Filing from the UK usually means little or no U.S. tax, because reliefs and the treaty prevent double taxation. Our guide to U.S. expat taxes in the UK covers the full U.S. return, our guide to the UK tax system explains the HMRC side, and our U.S.-UK tax treaty guide breaks down which country taxes what.

Why the IRS Taxes Your ISA

An ISA is tax-free in the UK, but the IRS taxes the interest, dividends, and gains, and the funds inside are often PFICs that need Form 8621. Our guide to ISA reporting explains what applies, and our Q&A on ISAs and PFIC rules covers the fund question in detail.

How UK Pensions and NI Affect Your U.S. Tax

Workplace pensions and SIPPs usually need FBAR and often Form 8938 reporting, and the treaty can shelter growth. National Insurance ties into U.S. Social Security through a totalization agreement. Our guide to UK pensions and SIPPs and our U.S.-UK totalization agreement guide explain both.

U.S. Rules for Freelancers and Directors

Freelancing in the UK brings Schedule C and self-employment tax questions, and running a UK limited company adds Form 5471 and anti-deferral rules. Our guides to being self-employed in the UK and to owning a UK limited company cover the U.S. rules that apply on top.

How UK Property Is Taxed on Your U.S. Return

UK rental income goes on your U.S. return with the Foreign Tax Credit, and a sale brings UK and U.S. capital gains rules into play. Our guide to UK rental income for landlords and our guide to UK capital gains tax on property show how each is reported.

Coordinating Self Assessment and Your U.S. Return

Filing a U.S. return alongside UK Self Assessment means converting GBP to USD and working around two calendars, and quarterly digital reporting started on 6 April 2026 for anyone with over £50,000 of self-employment or property income. Our guide to UK Self Assessment and our Making Tax Digital guide walk through both.

Woman and young girl kneeling on a bed, looking out a bay window at an autumn garden.

What Americans in the UK Say About Working With Us

Rated 4.8/5 by Americans filing from London to Edinburgh.

Trustpilot

“I worked with Greenback for 3-4 years while I was working abroad in the UK. They filed my federal and state returns. Excellent work across the board. Communicative, professional, timely. Would (and have) recommended to other US expats!”

Connor S. United Kingdom

“… We moved to UK upon retirement, and this year started getting UK pensions as well as our US income, and were uncertain how to handle. Our tax preparer helped clarify and we ended up owing much less US tax than expected. Overall, an excellent experience …”

Kathryn G. United Kingdom

“Taxes for US expatriates based in the UK are non trivial, especially with several pension, share and bank accounts. Our … accountant is like a most pleasant professional guide leading us across a complex, scary and unknown marsh (HMRC and IRS) at night!”

Andrew B. United Kingdom

“… because of bad advice from a tax ‘professional’ in the UK, I thought I did not have to file US returns. How wrong was he?!? Greenback and their accountant came to my rescue and got my situation sorted out through the Streamlined process.”

Greg M. United Kingdom
Trustpilot

Services for Americans Living in the UK

Annual U.S. Tax Return for UK Residents

USD $565

For Americans filing their yearly U.S. return from the UK. One flat fee covers Form 1040, Form 2555 for the FEIE, Form 1116 for the Foreign Tax Credit, Schedules C and E for freelance or rental income, and treaty positions.

UK Self Assessment Return

USD $910

For clients who want both sides handled together. Our UK accountant prepares your Self Assessment (SA100) and coordinates it with your U.S. return, so you upload documents once. Priced separately from the U.S. return.

FBAR Filing for UK Accounts

USD $125+

For Americans in the UK whose current accounts, ISAs, and pensions top $10,000 combined at any point in the year. We total the balances and e-file FinCEN Form 114 for you, covering up to five accounts.

Streamlined Catch-Up: 3 Tax Years, 6 Years of FBARs

USD $1,750

For Americans in the UK who fell behind. We use the IRS Streamlined Procedures to bring you current, usually penalty-free, in one flat-fee package, and most owe little or nothing after credits.

Spouse UK Tax Return (Mirror Return)

USD $565

For married couples in the UK, where HMRC allows no joint return. We prepare your spouse’s Self Assessment at a reduced rate, using the documents already gathered for your filing, so both filings stay aligned.

Strategic Consultation for UK Expats

USD $250+

For Americans in the UK who want their U.S. position clear before they act. Sit down with a U.S. expat tax expert to talk through how the IRS treats your ISAs, pensions, and your next steps, with no pressure.

U.S. and UK Tax FAQs

Answers to what Americans in the UK ask most about filing with the IRS and HMRC.

Usually not. The U.S.-UK tax treaty, the Foreign Tax Credit, and the Foreign Earned Income Exclusion (up to $130,000 for the 2025 tax year) work together to offset your U.S. tax.

Because UK rates are often higher than U.S. rates, the Foreign Tax Credit alone often eliminates the U.S. tax bill. Filing is how you claim the treaty and credits each year, so it stays routine once it is set up.

Yes. Greenback files both, and your accountant tells you which filings you need, so you do not have to work it out. A U.S. accountant prepares your Form 1040, while a UK Chartered Accountant prepares your Self Assessment on one team, so treaty positions line up, and nothing is double-counted.

You upload documents once. Our flat fees: U.S. return $565, UK Self Assessment $910, spouse’s mirror return $565, FBAR $125+, Streamlined catch-up $1,750.

Tell us what you have: a UK salary, an ISA, a pension or SIPP, a rental flat, and any missed U.S. returns, and we will confirm the filings and the total before any work begins.

Carefully, because both are U.S. tax traps. Your ISA is tax-free in the UK, but the IRS taxes the interest, dividends, and gains, and many ISA funds are PFICs that require Form 8621.

UK workplace pensions and SIPPs usually need FBAR and often Form 8938 reporting. We report each correctly, determine whether the PFIC filing applies, and flag how the U.S. treats each before you add more to an ISA.

Yes. The IRS Streamlined Foreign Offshore Procedures exist for exactly this purpose, and Greenback handles the entire catch-up for a flat $1,750.

You file the three most recent years of returns and six years of FBARs, plus Form 14653, the non-willfulness certification you sign yourself.

You qualify if, in one of the last three years, you had no U.S. abode and spent at least 330 full days outside the country. When done correctly, the IRS waives failure-to-file, failure-to-pay, accuracy-related, information return, and FBAR penalties, and the Foreign Tax Credit often leaves little or no tax owed.

Pricing is flat-fee and published up front. The U.S. federal return is $565, the UK Self Assessment is $910 and billed separately, and a spouse’s mirror return is $565. FBAR is $125 for up to five accounts, the Streamlined catch-up package is $1,750, and consultations start at $250.

Nothing starts until you have seen the full cost and approved it.

A dedicated Greenback accountant, a U.S. CPA or IRS Enrolled Agent, prepares your U.S. return, and a UK-based Chartered Accountant prepares your UK Self Assessment.

They work together on one team, so your treaty positions, ISAs, pensions, and exchange-rate conversions are handled consistently. You work with the same team each year, never outsourced and never automated.

 Yes, and it is booked separately, because our U.S. consultations cover U.S. tax only.

Our UK Chartered Accountant offers a 30-minute telephone consultation at $250 or a written email consultation at $190, both on UK tax. If your question spans both systems, the joint U.S./UK consultation at $300 puts a U.S. accountant and a UK Chartered Accountant in the same 30 minutes.

There is also a free 15-minute kick-off call with a UK Chartered Accountant before you sign up, so you can test the fit at no cost.

Your U.S. and UK Returns, Done Right the First Time.

Work with a team that files both sides together, so nothing slips through. Treaty rules, FBAR, and ISAs, handled right.