Most Americans who look into renouncing US citizenship eventually ask the same question: what does the exit tax actually cost? The honest answer is: for most people, nothing. For some people, a meaningful amount. For a small group with large unrealized gains, it can be substantial. The calculation is specific, and the threshold that determines whether you owe anything at all is not where most people expect it to be.
This article explains how the US exit tax works, who it applies to, and what the math looks like at $500k, $2M, and $5M net worth. It is not tax advice — work with a US tax attorney before making any expatriation decisions. But it will give you the framework to understand what you’re dealing with before you walk into that conversation.
Step 1: Are You a “Covered Expatriate”?
The exit tax only applies to covered expatriates. Most Americans who renounce are not covered expatriates, and owe nothing beyond the $2,350 renunciation fee. You become a covered expatriate if you meet any one of three tests at the time of renunciation:
- Net worth test: Your net worth is $2 million or more on the date of expatriation.
- Tax liability test: Your average annual US net income tax liability for the five years preceding expatriation exceeds the threshold (adjusted annually for inflation — approximately $190,000–$200,000 as of recent years).
- Certification failure: You cannot certify that you have complied with all US federal tax obligations for the five years preceding expatriation.
If you fail any one of these three tests, you are a covered expatriate and the exit tax machinery activates. If you clear all three — net worth under $2M, average tax bill under the threshold, and five years of compliant filing — you are not a covered expatriate and you owe no exit tax.
The vast majority of Americans who renounce are not covered expatriates. The exit tax is primarily a concern for high-net-worth individuals, long-term high earners, and anyone with large unrealized investment gains.
Step 2: The Mark-to-Market Calculation
For covered expatriates, Section 877A of the Internal Revenue Code treats you as if you sold all of your worldwide assets at fair market value on the day before your expatriation date. This is the mark-to-market rule.
The tax is calculated on the gain from that deemed sale — not on the fair market value itself. If you paid $300,000 for stock now worth $800,000, the gain is $500,000. If you paid $800,000 for real estate now worth $800,000, the gain is zero.
From that total calculated gain, you subtract the exclusion amount — approximately $866,000 for the current year (indexed to inflation annually). Gain below the exclusion is not taxed. Gain above the exclusion is taxed at your applicable capital gains rate.
The formula: (Total deemed gain − Exclusion) × Capital gains rate = Exit tax owed
Three Scenarios
Scenario A: $500k Net Worth
You have $500,000 in net worth: a home worth $400,000 (bought for $250,000) and an investment account with $100,000 (bought for $70,000).
Net worth test: $500,000 — under $2M. If your average tax bill is also under the threshold and you’ve filed compliantly for five years, you are not a covered expatriate. No exit tax calculation needed. You renounce, pay the $2,350 fee, and you’re done.
Even if you somehow became a covered expatriate: total deemed gain is $150,000 + $30,000 = $180,000. Subtract the ~$866,000 exclusion — the exclusion is larger than the gain. Exit tax: $0.
Scenario B: $2M Net Worth
You have $2,000,000 in net worth: a portfolio of investments with $1,200,000 in unrealized gains, plus a home and other assets.
Net worth test: $2M exactly — you are a covered expatriate (the test is $2M or more). Mark-to-market applies. Total deemed gain: $1,200,000. Subtract exclusion ($866,000). Taxable gain: $334,000. At a combined federal + NIIT capital gains rate of approximately 23.8%, the exit tax would be approximately $79,000.
Note: if your unrealized gains were only $500,000 — all below the exclusion — your exit tax would be $0 despite being a covered expatriate.
Scenario C: $5M Net Worth
You have $5,000,000 in net worth: a business worth $3M (basis $400,000), a securities portfolio with $800,000 in gains, a home, retirement accounts.
Covered expatriate: yes. The business is included in the mark-to-market calculation at fair market value. Business gain: $2,600,000. Portfolio gain: $800,000. Total deemed gain: ~$3,400,000 (assuming other assets are roughly basis-equivalent). Subtract exclusion: ~$2,534,000 taxable. At 23.8%: approximately $603,000 in exit tax.
At this level, the exit tax is a real planning problem — and the reason high-net-worth individuals considering renunciation should work with a tax attorney well in advance of the expatriation date, not after.
Special Rules for Retirement Accounts and Deferred Compensation
The mark-to-market rule applies to most assets, but IRAs and 401(k)s are handled differently. Rather than the deemed-sale treatment, covered expatriates are taxed on the taxable portion of these accounts on the day before expatriation at a flat 30% rate — as if that amount were distributed that day. There is no exclusion amount for these accounts.
This is one of the more painful parts of the exit tax for people who have spent decades building retirement accounts: the entire pre-tax balance of traditional IRAs and 401(k)s becomes immediately taxable on exit. For a covered expatriate with $800,000 in a traditional IRA, the exit tax on just the retirement account is approximately $240,000.
Deferred compensation from employers is also subject to special rules — generally 30% withholding on amounts distributed after expatriation.
What the Exit Tax Is Not
The exit tax is calculated on gains, not on asset values. It does not tax the money you already paid tax on when you earned it. It does not apply to most Americans. It does not require you to liquidate actual assets — you calculate the tax as if you sold everything, but you do not have to actually sell anything. The tax is owed regardless, but the underlying assets remain yours.
The exit tax is also separate from any ongoing state tax obligations, estate planning implications, or the tax treatment of income you earn after expatriation. The exit tax is specifically a one-time calculation on departure. Post-renunciation, you are treated as a non-resident alien for US tax purposes — which for most income types means no US tax unless the income has a US source.
Planning Before You Renounce
If you’re a covered expatriate, there are legal strategies that can reduce the exit tax burden — but they require advance planning, sometimes years in advance:
- Converting traditional IRAs to Roth IRAs before expatriation — Roth IRAs are also subject to special exit tax treatment, but distributions may be tax-free post-renunciation in some structures.
- Realizing gains before expatriation — if you’re already above the exclusion, strategically timing gain recognition in prior years (when you’re still a US taxpayer at full rates) versus triggering the exit tax treatment can sometimes reduce total tax.
- Gifting assets to reduce net worth below the $2M threshold — subject to gift tax rules and timing.
- Moving to a lower-cost basis by triggering gains earlier — in some cases, paying tax on gains before renouncing (at regular US rates) costs less than the exit tax on the same gains post-renunciation.
None of these strategies is straightforward, and the IRS actively scrutinizes renunciation-adjacent transactions. The planning window for high-net-worth renunciation is typically 2–5 years, not months. If this is your situation, start the conversation with a qualified international tax attorney before you do anything else.
The Bottom Line
For the majority of Americans considering renunciation: if your net worth is under $2 million and your average tax bill is under ~$190–200k/year, you are not a covered expatriate and the exit tax is not your problem. The $2,350 renunciation fee is your only cost.
For high-net-worth individuals who are covered expatriates: the exit tax is real, calculable, and in many cases manageable with proper advance planning — but it requires professional help and time. A $5M portfolio with $3M in unrealized gains carries a meaningful exit tax. A $5M portfolio built entirely from after-tax money with no unrealized gains may carry close to zero.
To understand where you fit, start with our full guide on how to renounce US citizenship. And before you make any decisions, book a consultation call — we’ll walk you through your options and refer you to the right tax counsel for your situation.
Frequently Asked Questions
Does every American who renounces pay the exit tax?
No. Only “covered expatriates” pay the exit tax — those with net worth of $2M+, average tax liability above the annual threshold, or who cannot certify five years of tax compliance. The majority of Americans who renounce are not covered expatriates.
What is the exit tax exclusion amount?
Approximately $866,000 (indexed annually for inflation). Deemed gains below this amount are not taxable under the exit tax, even for covered expatriates.
Does the exit tax apply to foreign assets?
Yes. The mark-to-market rule applies to worldwide assets — US and foreign property alike is included in the deemed-sale calculation.
Can I avoid the exit tax by giving assets away before renouncing?
Potentially, but gifts above the annual exclusion are subject to gift tax, and the IRS scrutinizes large transfers made in connection with expatriation. Any pre-renunciation gifting strategy should be reviewed by a qualified tax attorney.
Do I have to sell my assets to pay the exit tax?
No. The exit tax is calculated on a deemed sale, but you do not have to liquidate actual assets. You calculate the tax as if everything were sold, then pay the tax — while retaining your actual assets.
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