The exit tax: what renouncing actually triggers

Because one of the three tests ignores your finances entirely. Someone with a modest London salary and no savings becomes a covered expatriate simply by failing to certify five clean years of US filings. Wealth never enters that particular question at all.

Accidental Americans sit right in this trap. Many first learn about their filing duty when they decide to renounce. At that point five years of compliance does not exist, and nobody can create it overnight.

In our practice this drives the whole timeline. Booking the renunciation appointment is the easy part. Building the five-year record that lets you certify is the work, and it needs starting well in advance.

The fix is unglamorous and effective. File the missing years through the right route, then let the clock produce the five clean years the certification needs. Nothing about that work is exotic; it simply cannot be compressed.

The IRS lists them plainly, and meeting any single one is enough. First, your average annual net income tax for the five years ending before expatriation exceeds a specified amount adjusted for inflation. The IRS states that figure as $206,000 for 2025.

Second, your net worth is $2 million or more on the date of expatriation or termination of residency. That figure is not indexed, so ordinary asset growth has pulled more people over it with each passing year.

Third, you fail to certify on Form 8854 that you have complied with all US federal tax obligations for the five years preceding expatriation. This one turns on filings rather than money.

It is the charge that can arise when a US citizen renounces, or when a long-term green card holder ends their residency. Broadly it treats you as having sold your worldwide assets the day before you leave the system.

The exit tax reaches covered expatriates only. The IRS expatriation guidance sets out the current rules, which cover expatriations on or after June 17, 2008.

So the first question is never how much you would pay. It is whether you are covered at all. Most of the analysis, and nearly all of the planning, sits in that single question.

Note also what the exit tax is not. It is not a fee for renouncing, and it is not a penalty. It is a tax on unrealised gains, triggered by leaving the system rather than by selling anything.

A deemed sale applies to your worldwide assets. The rules compute it as though you sold everything the day before expatriation. Gains above an exclusion amount become taxable, even though you sold nothing and received no cash.

Deferred compensation, pensions and certain trust interests follow their own rules rather than the deemed sale. A UK pension therefore does not simply join the general calculation. Its treatment needs looking at specifically, because the categories here are technical.

Gifts and bequests you later make to US persons carry consequences too. So the exit tax analysis reaches beyond your own position into what your family receives afterwards. That surprises people who expected a clean break.

An exclusion applies to the deemed gain, and it is indexed each year. So being covered does not automatically mean a large bill, particularly for someone whose assets are modest. The charge depends on what the deemed sale produces above that exclusion.

Planning around the charge is legitimate and common. Timing an expatriation for a year when asset values are lower, or before a large unrealised gain builds, changes the deemed sale figure considerably. That is ordinary planning rather than avoidance.

Sometimes, through timing and preparation rather than anything clever. The certification test is the most fixable, because it depends on filings you can complete before you renounce rather than on assets you would have to give away.

Where past years are missing, the catch-up routes matter enormously. The streamlined filing procedures exist for non-willful gaps, and our guides to streamlined filing costs and the delinquent FBAR procedures cover what they involve.

The IRS also operates relief procedures for certain former citizens, aimed at people who expatriated without knowing their obligations. Eligibility is narrow and specific, so check the current terms rather than assuming they apply.

Note what generally cannot be engineered away. The net worth test looks at your assets on the expatriation date, and giving property away shortly beforehand creates its own tax questions. Timing helps; artificial rearrangement rarely does.

Run this before booking any appointment. The order matters, because the earlier steps change what the later ones cost.

Give it time. Five years of filings cannot be assembled in a fortnight.

Take an illustrative example: an accidental American in Bristol, born in Boston to British parents and taken home as a baby. He has a UK salary, a small flat and a workplace pension. His net worth is nowhere near $2 million.

He has also never filed a US return, because nobody told him he should. If he renounces now, he cannot certify five years of compliance, so he becomes a covered expatriate on the third test alone.

Filing first changes the outcome entirely. A catch-up through the appropriate route, then five clean years, then renunciation, and none of the three tests catch him. Same person, same assets, and a different answer purely from sequence.

His timeline is the real lesson. Filing first added a couple of years before he could certify cleanly, which felt slow at the time. It also removed a charge that would have applied to assets he could not easily have paid it from.

Long-term residents can face the same rules when they give up their status. The tests apply in a similar way, so handing back a card is not automatically simpler than renouncing citizenship. Many people assume the opposite.

That assumption catches people who treated a green card as the lighter commitment. Once you meet the long-term residency threshold, the exit tax rules come into view alongside the ordinary filing duties.

Anyone considering giving up a card should check the position before doing so. Our exit tax estimator gives a first indication of where the tests fall for you.

Two separate tracks, and people conflate them constantly. One is the consular process that ends your citizenship. The other is the tax process that closes your file with the IRS. Completing the first does not complete the second.

The consular side means an appointment at a US embassy or consulate, an interview, and a fee. Appointment availability varies considerably by location, and waiting times can run to months in busy posts like London.

The tax side runs on its own calendar. A final return covers the part-year up to expatriation, and Form 8854 goes in for the same year. Missing that form carries its own penalty, quite apart from anything the three tests produce.

So sequence the two deliberately. The filings that support your certification need to exist before you attend the appointment, because afterwards the certification question is already answered.

Largely with indifference, because British tax follows residence rather than nationality. Renouncing changes your American position without altering your UK filings at all. Your Self Assessment continues exactly as before, on the same income and the same deadlines.

Timing creates the one practical link. A deemed sale produces an American charge in a year when Britain may see nothing, so credits may not exist to offset it. That mismatch deserves modeling before anyone picks a date.

So the decision is genuinely one-sided in tax terms. The costs and reliefs sit in the American system, and the British system simply carries on.

Often it is not, and that deserves saying plainly. Many people who arrive convinced they must renounce simply need their filings brought current. Once compliant, the annual burden is usually modest and entirely manageable.

The cases where renunciation genuinely helps tend to involve investment complexity rather than tax bills. Someone who cannot hold ordinary British funds, or who faces reporting on a family business, may value the simplicity more than the passport.

It is also irreversible in practice, and it carries consequences well beyond tax. Travel, family ties and any future wish to live in America all deserve weighing alongside the numbers.

So test the alternative first. Getting compliant costs a defined amount and keeps every option open. Renouncing closes them, and no analysis afterwards can reopen the door.

We test all three conditions before anything is booked, through our treaty relief service and our expatriation work. Where past filings are missing, we close the gap through the right catch-up route first, because that alone changes the answer for most people.

If you are considering renouncing, or handing back a green card, start the conversation early. Send us the outline and we will map the position at a fixed fee agreed first. See also the official page for Form 8854. This article is general information, not personal tax advice; take advice on your own facts from a qualified US-UK adviser.