The passport is gone. Your estate exemption just fell to $60,000

Figures relate to tax year 2025-26 (UK) · 2025 (US)

The appointment is the part everyone focuses on. You swear the oath, hand over the passport and walk out no longer American. Worldwide taxation stops that day, and so does every foreign account report you have been filing for years.

Three things survive after renouncing. American source income stays taxable, American property keeps its own rules, and your estate tax allowance drops from millions to sixty thousand dollars overnight.

That last one is the surprise. Nothing in the process warns you about it, no form flags it, and the people it hits hardest are the ones who kept an American share portfolio after renouncing because it felt like the safe option.

Key takeaways

• Worldwide taxation ends on your expatriation date.
• FBAR, Form 8938 and PFIC reporting all stop with it.
• US source income stays taxable as a non-resident.
• Dividends from US shares face 15 per cent withholding under the treaty.
• Your US estate tax exemption falls to $60,000.
• Holding non-US funds removes that estate exposure entirely.
• Most people file nothing annually after the final return.

What actually stops when you renounce?

Worldwide taxation. After renouncing, America stops taxing what you earn outside its borders. From the expatriation date onwards America stops caring about your British salary, your ISA, your rental income here or your pension growth. According to IRS guidance, America taxes you from then on only as a non-resident alien.

The reporting burden falls away with it. No more FBAR, no Form 8938, no PFIC statements for British funds and no Form 5471 for a British company you own.

For most people that is the whole point. The annual compliance cost of being American in Britain usually dwarfs the tax actually paid, and it is the compliance that ends.

Does renouncing affect your UK tax at all?

Not directly. HMRC never cared about your American citizenship, so losing it changes nothing about your residence here, your rates, or the return you file. The British side of your tax life carries on exactly as before.

The indirect gain is real though. Investments you avoided while American, particularly British funds and an ISA, become sensible again after renouncing because the PFIC regime no longer reaches them.

Our guide to the ISA and PFIC problem explains what was blocking you. That constraint disappears on the expatriation date.

What counts as US source income?

Income that comes from America. After renouncing, where it comes from is all that counts. Dividends from US firms count. So do interest from US borrowers, rent from US property and gains on US land.

Your British pay is foreign and drops away at once. So does UK bank interest, UK share dividends and any gain on a UK home.

The test asks where the money comes from. Not where you live, and not where the account sits. That is why a British account holding American shares still produces American source dividends.

What happens to US dividends?

After renouncing they face withholding at source, usually 15 per cent under the treaty rather than the statutory 30 per cent. Your broker applies it automatically once you file a W-8BEN confirming British residence.

That withholding normally settles the whole liability, so you file nothing annually. The money arrives net and nothing further is due.

Filing the W-8BEN promptly matters. Without it the broker applies 30 per cent, and recovering the difference means filing a return to claim it back.

Why does the estate position get worse?

Because after renouncing you become a non-resident alien, with a far smaller exemption. An American citizen has a lifetime exemption in the millions. A non-resident holding American assets gets $60,000 before estate tax starts.

That figure covers US sited assets. Shares in US firms count, and so does land there. A portfolio of $500,000 in American stocks could face estate tax on $440,000 of it.

Our guide to US estate tax for UK investors covers the thresholds. This is the single most overlooked consequence of renouncing.

Can you restructure around the estate exposure?

Often yes, and it is worth doing before rather than after. Move from US listed shares into UK or Irish funds that hold the same firms. The US link then goes.

The estate treaty between the two countries helps as well. In many cases it gives a share of the full allowance rather than the bare $60,000. Somebody has to claim it, and that job falls to your executors.

The simplest answer for most people is to hold non-American funds. The underlying investment exposure is identical and the estate problem disappears.

What happens to a joint account with a US spouse?

The account stops being yours for American reporting and stays fully reportable for theirs. Your spouse keeps declaring the whole balance, because signature authority over the account is what triggers the duty rather than ownership of the money.

That can be a reason to restructure. Splitting joint holdings after renouncing reduces what the remaining American in the household has to disclose each year.

Our guide to FBAR signature authority covers who has to report what.

Can you still work for an American employer?

Yes, and the tax follows where you do the work rather than who pays you. Working from Britain for an American company produces British source employment income, which America does not tax after renouncing.

Travelling to America to work changes that. Days worked physically there create American source income and can require a return.

Our guide to working remotely for a US employer covers the split.

What about American property you keep?

It stays firmly inside the American system after renouncing. Rent is still taxed there. You file each year. A sale brings both a gain and a withholding rule built for foreign sellers.

A buyer must withhold a slice of the gross price when a foreign person sells. That slice usually exceeds the real tax by a wide margin. Recovering the excess means filing and waiting.

Our guide to US property owned by UK residents covers the position. Nothing about renouncing improves it.

Do you still get Social Security?

Yes, if you earned the credits. Entitlement survives after renouncing, because it follows your contribution record rather than the passport you hold. Nothing you did at the embassy removes a quarter of coverage you already banked.

How America taxes it changes. As a non-resident the payments can face US withholding. But the treaty usually gives Britain the right to tax a pension paid to someone living here.

Our guide to Social Security and the state pension covers the interaction. Tell the Social Security Administration about the change in status.

What happens to a US retirement account?

An IRA or 401(k) stays put after renouncing. It is still US income when it pays out. Payments face withholding, and the treaty usually gives the taxing right to the country you live in.

Some providers refuse to keep accounts for non-residents, which is a practical problem rather than a tax one. Check the provider policy before you renounce, not after.

Our guide to US retirement accounts in the UK covers the treaty treatment of withdrawals.

Do you need an ITIN now?

Maybe. Your Social Security number stays valid, but your status has changed. Some institutions ask a former citizen for an individual taxpayer identification number instead, and others accept the number you already hold without comment.

In most cases the existing number continues to work. The W-8BEN asks for a foreign tax identifying number as well, and your UK National Insurance number fills that box.

Sort this out with each institution rather than assuming. A rejected W-8BEN means thirty per cent withholding until it is fixed.

Which UK accounts cause trouble now?

None of them, and that is the change people feel most. A British bank account, an ISA, a pension and a stocks account all become ordinary again the moment the citizenship ends.

Banks that flagged you under FATCA stop once you hand them the certificate. Some will ask for it specifically before updating their records.

Send it to every institution that ever asked about your American status. They will otherwise keep reporting you to the IRS for years after renouncing.

Is there any ongoing filing at all?

For most people, none. Where dividends and interest are your only American income, withholding at source settles it. Nothing further falls due, and you file no return at all in a normal year after renouncing.

A return becomes necessary where you have American rental income, a gain on American real property, or income that was under-withheld. Those are the three common triggers.

Keep the W-8BEN current with every American institution. They expire and a lapsed form pushes withholding back to 30 per cent.

What is the dual status final year?

The calendar year splits at the expatriation date, so part of it sits before and part after renouncing. Up to that date America taxes you as a citizen on worldwide income. After it you pay as a non-resident, on American source income only.

That produces one return covering two different regimes. A dual status return is more work than either a normal 1040 or a normal 1040-NR, and it is the year most likely to need professional help.

Our guide to the dual status tax return covers the mechanics. The same structure applies to anyone changing status mid-year.

A worked example

The figures below are illustrative. They use round numbers so you can follow each step and substitute your own.

Claire renounces in Manchester on 30 June 2025. She earns £60,000 a year in Britain and holds $200,000 of American shares paying $6,000 of dividends annually.

For January to June she reports her British salary and her dividends as a citizen, claiming foreign tax credits as usual. For July to December her British salary drops out entirely.

The second half of her dividends, about $3,000, stays taxable as American source income. The treaty caps the rate at 15 per cent, so roughly $450 of withholding settles it.

From 2026 onwards she files nothing annually, because withholding at source satisfies her liability on the dividends. Her British life becomes invisible to the IRS.

Before and after compared

The table shows what changes on the expatriation date. The right column is the rest of your life.

When is the final return due?

On the normal timetable for the year of departure, so a June 2025 expatriation produces a return due in 2026. Form 8854 goes with it and also gets sent separately to a specific address.

Missing Form 8854 keeps you a covered expatriate regardless of your actual numbers. It is the single most important piece of paper in the whole process.

Diarise it from the appointment. Almost a year passes between the oath and the deadline, which is long enough to forget.

What if you had a covered expatriate charge?

The exit tax itself is a one-off, settled with your final return. What carries on after renouncing is the effect on gifts and bequests you later make to Americans, which sits with them rather than with you.

An American receiving a gift or inheritance from a covered expatriate faces a separate transfer charge at the top estate rate. That liability sits with the recipient rather than with you.

Our guide to the exit tax and Form 8854 covers who it reaches. Avoiding covered status protects your family as well as you.

How long should you keep the records?

At least six years from the final return. Keep the certificate for good. Banks and brokers ask for proof of status for years after renouncing, often with no warning at all, and it is the one document that answers them.

The certificate of loss of nationality is the document that answers every one of those questions. Scan it and store a copy somewhere separate from the original.

Keep the filed Form 8854 with it. Together they prove both that the citizenship ended and that the tax relationship closed properly.

What to do in the year after

1. Prepare the dual status return for the year of expatriation.
2. File Form 8854 with it and to the separate address.
3. Lodge a W-8BEN with every American financial institution.
4. Confirm the withholding rate applied has dropped to the treaty rate.
5. Review whether any American source income needs an annual return.
6. Check your American situs assets against the $60,000 exemption.
7. Restructure American-listed holdings into non-American funds if needed.
8. Notify Social Security and any pension provider of the status change.

Mistakes and penalties we see after renouncing

The first is assuming the final return is a normal one. A dual status year has its own rules and a standard 1040 for the whole year is simply wrong.

The second is forgetting Form 8854. The citizenship ends at the embassy and the tax status ends with that form, and only one of them happens on the day.

The third is leaving a portfolio in American-listed shares. The estate exemption collapses to $60,000 on the day you renounce and nobody writes to tell you.

The fourth is letting a W-8BEN expire. Withholding reverts to 30 per cent and reclaiming it requires the return you were trying to avoid.

How US UK Tax Accountants helps

We prepare the dual status year properly, file Form 8854 on time and both ways, and review what American source income you still hold. Then we look at the estate exposure, which is the part most people never hear about.

Where American assets create an ongoing problem, we set out what restructuring would fix it. Our expatriation service covers the final year and everything that follows.

If you have renounced or are about to, get in touch. The year after is where the avoidable mistakes happen.

Last reviewed 10 October 2026. This article is general information and not personal tax advice. Every case turns on its own facts, so take advice on yours before filing.