Free Tax Calculator · 2026
US Exit Tax Calculator 2026
Find out whether you are a covered expatriate, price the section 877A deemed sale after the $910,000 exclusion, and see what the United Kingdom can still tax on the same gain afterwards.

Leaving the US tax system is priced on the day before you go: the US exit tax treats every asset you own as sold before you board.
Step 1 · Are you a covered expatriate?
Your net US tax after foreign tax credits, not your income. The 2026 threshold is $211,000.
Step 2 · The deemed sale
Include your home, portfolio and business interests. Leave pensions out; they go below. Green card holders can generally use the value on the day they first became US resident as basis for assets they already owned.
Step 3 · Pensions and deferred accounts
Step 4 · Your final-year return
Step 5 · If you later sell as a UK resident
Covered expatriate tests · 2026
Estimated US exit tax
$546,279
The extra federal tax on your final return — 26.1% of the amounts deemed received
The deemed sale
Taxed as ordinary income
Your final-year bill
What follows you afterwards
The UK keeps your original cost as its base, so it taxes the whole gain again on a real sale unless the timing is planned. Withholding is shown on the full plan balance and falls due only as payments are made.
Estimate for expatriations in calendar year 2026 using IRS Revenue Procedure 2025-32: the $211,000 average annual net income tax threshold, the $910,000 section 877A(a)(3) exclusion, and the 2026 rate bands and capital gains breakpoints, with the statutory $2 million net worth test. The year of expatriation is treated as a dual-status year, so no standard deduction is applied and joint and head of household rates are not offered. UK capital gains tax is shown at the 2026/27 rates of 18% and 24% before the annual exempt amount. Nongrantor trust interests, passive foreign investment company and controlled foreign corporation rules, depreciation recapture, the alternative minimum tax, foreign tax credits and state tax are not modelled. Not personal advice.
Free download
Get your results as a branded PDF
Enter your details to download a TaxYork-branded PDF of your estimate. A specialist can then help you plan.
How the US exit tax calculator works
This US exit tax calculator follows the order of Form 8854. It first decides whether you are inside the expatriation regime at all, then applies the three covered expatriate tests, and only if you fail one of them does it run the deemed sale. Gains are reduced by the 2026 exclusion, pensions and tax deferred accounts are added as ordinary income, and the result is the additional federal tax on your final return compared with a year in which you had stayed.
Most tools stop at a yes or no on covered status, or at a gain figure with no tax attached. This one prices the charge, and then does something none of them attempt: it shows what the United Kingdom will still tax on the same assets after you have paid.
The three tests, and the one that catches Americans in Britain
You are a covered expatriate if your net worth is $2 million or more, if your average annual net income tax for the five preceding years is above $211,000 for 2026, or if you cannot certify five years of complete US tax compliance. One failure is enough.
For Americans living in the United Kingdom the tax liability test is rarely the problem. British income tax is higher than American at most income levels, so the foreign tax credit drives the net US liability towards nil and the five-year average with it. The net worth test is different. The $2 million figure has been frozen since 2004, it counts a London home at full value less the mortgage, and it counts pension rights. A professional couple in their fifties can cross it without a single investment that feels like wealth.
The certification test is the one within your control. It fails on a missed information return as readily as on unpaid tax, and it makes you covered whatever your net worth. Catching up before the expatriation date is therefore worth more than any other single step.
How the $910,000 exclusion is applied
The exclusion is not a threshold that removes smaller estates from the charge; it is a deduction from the total gain. It is allocated across every asset standing at a gain in proportion to that gain, so it cannot be pointed at short-term or highly taxed assets by choice. Losses on other assets are then taken into account in the usual way. Where the total gain is less than $910,000 the exclusion simply equals the gain and no tax arises on the deemed sale, although pensions and deferred accounts can still produce a charge on their own.
Married couples should note that the exclusion is per person, not per return, and that only the spouse who expatriates is subject to the deemed sale. Each spouse is tested on their own net worth and their own share of jointly held property, so the two results can differ sharply within one household.
Why a UK pension can cost more than the portfolio
Pensions are not part of the deemed sale and get no share of the exclusion. A plan paid by a US person can be treated as eligible deferred compensation: nothing is taxed at exit, and 30% is withheld from taxable payments as they are made. A plan paid by a non-US person, which describes almost every British workplace and personal pension, is ineligible. The present value of the accrued benefit is treated as received on the day before expatriation and taxed at ordinary rates of up to 37%.
The cash is not there to pay it. The pension cannot normally be accessed before the minimum pension age, and a withdrawal to fund the American bill would itself be taxed in Britain. For anyone with a substantial defined benefit entitlement or a large personal pension, this line of the calculation deserves more attention than the investment portfolio beside it.
The UK does not recognise the sale that never happened
The deemed sale gives you a new, higher basis for US purposes. It gives you nothing in Britain. For UK capital gains tax your base cost remains what you paid, so a real sale in a later UK tax year is taxed on the entire gain at 18% or 24% for 2026/27. The US charge arose years earlier on a transaction the UK regards as never having taken place, which is why relief for one tax against the other should not be assumed.
There are three ways to bring the two charges back together. The first is to sell before you expatriate, so that both countries tax one real disposal in the same period and the ordinary credit rules work. The second is the section 877A(b) deferral election, which postpones the US tax on a chosen asset until it is actually sold, at the price of interest, security and a waiver of treaty protection. The third applies to Britons going home after ten or more tax years away: real sales of non-UK assets in the first four years of UK residence can be outside UK tax altogether under the foreign income and gains regime.
Green card holders: the eight-year clock and the arrival step-up
A green card holder is within the regime only as a long-term resident, which means lawful permanent residence in at least eight of the last fifteen tax years. Any part of a year counts, so the practical window is nearer six years and a day than eight. A year in which you were treated as resident in another country under a tax treaty, and did not waive the treaty, does not count towards the eight, but claiming that treaty position once you are already a long-term resident is itself an expatriation event.
Long-term residents do have one advantage over citizens. Property owned on the day you first became US resident is treated as having a basis of at least its value on that day, so growth from before your American years stays outside the charge. Enter that stepped-up figure as your basis above, with evidence of the arrival-date values kept on file.
The final year is not an ordinary return
The year you expatriate is split in two: resident up to the expatriation date, nonresident after it. On a dual-status return the standard deduction is generally unavailable, a joint return generally cannot be filed and head of household rates cannot be used. Tools that apply joint brackets and a standard deduction to the exit year therefore understate the tax. This calculator offers only the two schedules that can apply, and adds the 3.8% Net Investment Income Tax on the taxable gain, which the foreign tax credit cannot reduce.
Common Questions
US Exit Tax Calculator — FAQs
What is the US exit tax?
+
The US exit tax is the charge imposed by section 877A when a covered expatriate gives up US citizenship or ends long-term permanent residence. You are treated as having sold all of your worldwide property at fair market value on the day before you expatriate, and the resulting net gain above an annual exclusion is taxed on your final return. Certain pensions and tax deferred accounts are dealt with under separate rules rather than the deemed sale.
Who has to pay the exit tax?
+
Only covered expatriates. That means a US citizen who renounces, or a long-term resident who ends green card status, and who also meets at least one of three tests: a net worth of $2 million or more on the expatriation date, an average annual net income tax liability above the indexed threshold for the five preceding years, or a failure to certify five years of full US tax compliance on Form 8854. If none of the three applies, there is no exit tax, although Form 8854 must still be filed.
What are the exit tax thresholds for 2026?
+
For expatriations in calendar year 2026 the average annual net income tax threshold is $211,000 and the exclusion from the deemed-sale gain is $910,000, both set by IRS Revenue Procedure 2025-32. The net worth threshold is $2 million, a figure written into the statute that has never been adjusted for inflation. The comparable 2025 figures were $206,000 and $890,000.
Is the $211,000 test about my income or my tax?
+
It is about your tax, and the distinction matters. The test looks at your average annual net US income tax liability for the five tax years ending before the expatriation date, after foreign tax credits. An American in Britain with a very high salary can therefore sit far below the threshold, because UK tax credited on Form 1116 has already reduced the US liability towards nil. The net worth test is the one that catches most high earners abroad.
How is the exit tax calculated?
+
Each asset is treated as sold at fair market value on the day before expatriation. The gains are totalled, the exclusion of $910,000 for 2026 is allocated across the gain assets in proportion to each gain, and what remains is taxed as long-term or short-term capital gain according to how long each asset was held. The present value of ineligible deferred compensation and the balance of specified tax deferred accounts are then added as ordinary income. The calculator above runs those steps in the same order as Form 8854.
What counts towards the $2 million net worth test?
+
Broadly everything you own worldwide, valued as it would be for transfer tax purposes on the expatriation date: property, investment portfolios, business interests, cash, pension rights and beneficial interests in trusts. Liabilities are deducted. A UK home with a modest mortgage and a workplace pension are often enough, on their own, to carry an American in London over the line without any sense of being wealthy.
Does the exit tax apply to green card holders?
+
It applies to long-term residents, meaning anyone who held lawful permanent residence in at least eight of the fifteen tax years ending with the year the status ends. Part years count as full years, so someone who received a green card late in one year and gives it up early in another can reach eight sooner than expected. A long-term resident who meets one of the three covered expatriate tests is taxed in exactly the same way as a renouncing citizen.
Can claiming UK residence under the tax treaty trigger the exit tax?
+
Yes. A long-term resident who is treated as a resident of the United Kingdom under the treaty tie-breaker, does not waive the benefits of the treaty and notifies the IRS on Forms 8833 and 8854 is treated as having ended permanent residence for tax purposes. That is an expatriation event even though the physical green card is still valid. Britons returning home who file a treaty-based return without modelling this first can trigger the deemed sale by accident.
Is there an exception for people who were dual citizens at birth?
+
There is a narrow one. If you became a citizen of both the United States and another country at birth, you remain a citizen of and are taxed as a resident of that other country, and you were a US resident for no more than ten of the fifteen tax years ending with the year of expatriation, the net worth and tax liability tests do not apply to you. A second exception covers those who renounce before age eighteen and a half with no more than ten years of US residence. Neither removes the certification test.
What happens if I cannot certify five years of tax compliance?
+
You are a covered expatriate regardless of your wealth. The certification on Form 8854 is made under penalty of perjury and covers every federal tax obligation for the five preceding years, including information returns such as foreign account and foreign company reporting. This is why bringing past filings up to date before the expatriation date, rather than after it, is the first step in any renunciation plan.
How are pensions treated under the exit tax?
+
Pensions are deferred compensation items and fall outside the deemed sale. Where the payer is a US person and you notify them on Form W-8CE, the item is eligible: nothing is taxed at exit, but 30% is withheld from each taxable payment afterwards and you waive any treaty reduction. Where the payer is not a US person, which is the usual position for a UK workplace or personal pension, the item is ineligible and the present value of your accrued benefit is treated as received on the day before expatriation.
What are specified tax deferred accounts?
+
They are individual retirement arrangements, health savings accounts, education savings accounts and similar vehicles. A covered expatriate is treated as receiving a distribution of the entire interest on the day before expatriation, which is taxed as ordinary income to the extent it would have been taxable on a real withdrawal. The statute disapplies the early distribution penalty on that deemed distribution.
Can I defer paying the exit tax?
+
You can elect, asset by asset, to defer the tax on the deemed sale until the property is actually sold. The election is irrevocable, interest runs throughout, you must provide adequate security such as a bond or letter of credit, appoint a US agent, and irrevocably waive any treaty right that would prevent assessment or collection. Deferral aligns the US charge with a later real disposal, which can be valuable where another country will tax the same gain at that point.
Do green card holders get a step-up in basis?
+
Often, yes. For property you already owned on the day you first became a US resident, your basis for the deemed sale is treated as not less than its fair market value on that date. Only growth during your US years is then within the charge. The rule is automatic unless you elect out of it, and it does not apply to US real property or to assets used in a US business. Britons who arrived with an existing portfolio should enter the stepped-up figure as their basis above.
Does the United Kingdom recognise the US deemed sale?
+
No. The exit charge is a fiction of US law, and nothing is actually disposed of. For UK capital gains tax your base cost stays at what you originally paid, so if you later sell the same asset while UK resident, Britain computes its tax on the whole gain at 18% or 24% for 2026/27. The same growth can therefore be taxed by the United States at exit and by the United Kingdom on sale, in different years, unless the sequencing is planned in advance.
Can I credit the US exit tax against later UK tax?
+
It should not be assumed. Relief depends on the source of the gain, the treaty position at each date and the gap in time between the two charges, and the result differs between asset classes. The practical tools are the deferral election, which moves the US charge to the year of the real sale, selling before expatriation so that both countries tax a single real event, or using the UK four-year foreign income and gains regime where you qualify for it.
How does the UK four-year regime help someone returning to Britain?
+
An individual who becomes UK resident after at least ten consecutive tax years of non-residence can claim relief on foreign income and gains arising in their first four years of residence. For a Briton leaving the United States after a long stay, a real sale of non-UK assets inside that window can be free of UK tax, leaving only the US charge. The relief must be claimed, it costs you the personal allowance and the capital gains annual exempt amount for the year, and it does not cover UK-situated assets.
What filing status applies in the year I expatriate?
+
The year of expatriation is normally a dual-status year: a resident for the part up to the expatriation date and a nonresident afterwards. A dual-status taxpayer generally cannot file a joint return, cannot use head of household rates and cannot claim the standard deduction. That is why this calculator offers only single and married separate rates and asks for your other income after deductions rather than applying a standard deduction for you.
What is Form 8854 and when is it due?
+
Form 8854 is the initial and annual expatriation statement. It establishes your expatriation date for tax purposes, carries the compliance certification, and reports the deemed sale. It is attached to your income tax return for the year of expatriation and filed by that return’s due date, including extensions. Until it is filed you have not completed the tax side of expatriation, and the penalty for failing to file, or for filing it incomplete or incorrect, is $10,000.
How accurate is this US exit tax calculator?
+
It uses the 2026 thresholds and rate bands from IRS Revenue Procedure 2025-32, allocates the exclusion across gain property in the way Form 8854 requires, stacks long-term gain on top of ordinary income, and adds the 3.8% Net Investment Income Tax on the taxable gain. It does not model interests in nongrantor trusts, passive foreign investment company or controlled foreign corporation rules, depreciation recapture, the alternative minimum tax, foreign tax credits against the deemed gain, or state tax. Treat the result as a well-founded planning figure and let our specialists prepare the filed numbers.
Get in Touch
Ready to get
your US taxes
sorted?
Whether you need help with IRS Streamlined filings, annual US tax returns, or cross-border tax planning — our team is here for you.
View Contact DetailsSend us a message
Powered by Next Source AI Ltd