How the U.S. Exit Tax Works When You Renounce Citizenship

Renouncing U.S. citizenship is a major legal and financial decision. For many people, the biggest surprise is that the decision can also trigger a final U.S. tax review. In some cases, the IRS treats expatriation as if the person sold certain assets the day before leaving the U.S. tax system. That rule is commonly called the exit tax or expatriation tax.

The exit tax does not apply to every person who gives up citizenship or ends long-term resident status. It generally applies only if the person is classified as a covered expatriate. That classification depends on income tax history, net worth, and tax compliance. For entrepreneurs, investors, and founders with equity, deferred compensation, or closely held business interests, the stakes can be especially high.

This guide explains how the U.S. exit tax works, who may owe it, how Form 8854 fits into the process, and what to review before expatriating.

What the exit tax is

The exit tax is a set of U.S. tax rules that apply when certain people expatriate. Under the mark-to-market system, the IRS generally treats a covered expatriate as if they sold their worldwide property for fair market value on the day before expatriation.

That deemed sale can create taxable gain even if the person did not actually sell the assets. In other words, the tax is based on unrealized appreciation that existed at the moment of expatriation.

The exit tax is meant to prevent taxpayers from leaving the U.S. tax system with large untaxed gains. It can apply to:

• U.S. citizens who relinquish citizenship
• Certain long-term residents who end U.S. residency for tax purposes

The rules are technical, and the outcome depends on the facts of the case. A person may owe no exit tax, may owe tax only on certain assets, or may face additional consequences for deferred compensation and gifts or bequests to U.S. persons.

Who the rules apply to

As a general matter, section 877A applies to individuals who expatriate on or after June 17, 2008. Expatriation can include renouncing citizenship or ending long-term resident status.

Not everyone who expatriates is a covered expatriate. The exit tax usually depends on whether the person meets one of the following tests:

• The average annual net income tax liability for the 5 tax years before expatriation is above the IRS threshold
• The person’s net worth is at least $2 million on the expatriation date
• The person fails to certify full U.S. tax compliance for the prior 5 tax years on Form 8854

Some people may qualify for special exceptions, including certain dual citizens at birth and some individuals who expatriate before age 18 1/2 and have limited U.S. residency. Those exceptions are fact-specific and should be reviewed carefully before filing.

What makes someone a covered expatriate

A person is a covered expatriate if any one of the three IRS tests applies.

1. Average annual income tax liability test

For 2025, the average annual net income tax liability for the 5 tax years ending before expatriation must not exceed $206,000. If the average is above that amount, the person may be a covered expatriate.

This is not the same as gross income. It is a tax liability test, so the calculation depends on the actual tax owed in each of the five years before expatriation.

2. Net worth test

For 2025, a person with a net worth of $2 million or more on the expatriation date may be a covered expatriate.

Net worth generally means the fair market value of assets minus liabilities. That can include:

• Cash and bank accounts
• Stocks and mutual funds
• Business interests
• Real estate
• Retirement and investment accounts
• Certain trusts or deferred interests

For founders and business owners, the valuation of private company stock can be the biggest issue. Even if the business is illiquid, a meaningful ownership stake can push a person over the threshold.

3. Tax compliance test

A person can also become a covered expatriate by failing to certify on Form 8854 that they have complied with all federal tax obligations for the 5 tax years before expatriation.

This test is often overlooked. Even if someone is below the income tax and net worth thresholds, noncompliance can still trigger covered expatriate status.

How the mark-to-market exit tax works

If a person is a covered expatriate, the IRS generally treats most property as though it were sold for its fair market value on the day before expatriation.

The process works like this:

1. Identify worldwide assets subject to the mark-to-market rules.
2. Determine the fair market value of each asset on the day before expatriation.
3. Subtract the person’s tax basis in each asset.
4. Aggregate the gains and losses under the applicable rules.
5. Apply the annual exclusion amount.
6. Pay tax on any remaining net gain.

For 2025, the gain that is otherwise included in income is reduced by $890,000. Any taxable gain above that exclusion amount may be subject to U.S. income tax.

This can produce a large bill if the person holds:

• Appreciated public stock
• Private company shares
• Real estate with built-in gain
• Investment portfolios with large unrealized gains
• Interests in pass-through entities

The exit tax is not a penalty in the ordinary sense. It is a deemed-sale tax on appreciation that exists at the time of expatriation.

Assets that can require special attention

Not every asset is taxed the same way under expatriation rules. Some categories are straightforward under the mark-to-market approach, while others have separate treatment.

Common problem areas include:

• Business equity: Founders and shareholders may need careful valuation support.
• Deferred compensation: Some items have special withholding or tax treatment.
• Tax-deferred accounts: Certain retirement arrangements can raise separate questions.
• Trust interests: Foreign and domestic trust interests can create reporting and tax consequences.
• Options and equity awards: Unvested or contingent compensation may need review before expatriation.

A clean balance sheet does not necessarily mean a simple exit. A person can appear financially ordinary on paper but still face a significant exit tax because of unrealized gains in a concentrated asset.

Why entrepreneurs should pay close attention

Entrepreneurs are often the people most likely to be caught off guard by the exit tax.

A founder may own equity that is valuable on paper but difficult to sell. If that equity has appreciated substantially, expatriation can create a deemed gain even though no cash changes hands. That can create a liquidity problem: the tax is due even if the asset remains illiquid.

This matters especially when a founder has:

• A large ownership stake in a startup
• Stock options or restricted stock
• A recent liquidity event or secondary sale
• Company value tied to future growth expectations
• Investments across multiple jurisdictions

Before expatriation, founders should review whether a valuation, restructuring, or timing analysis could reduce the tax cost or avoid a surprise liability.

Form 8854 and why it matters

Form 8854, Initial and Annual Expatriation Statement, is central to the exit tax process.

The form is used to:

• Certify tax compliance for the prior 5 years
• Report expatriation information
• Support the determination of whether the person is a covered expatriate
• Fulfill annual filing requirements in limited situations after expatriation

The initial Form 8854 is generally attached to the taxpayer’s income tax return for the year that includes the expatriation date. If no income tax return is required, the form must still be filed by the applicable due date.

Failing to file Form 8854 correctly can be costly. It can affect covered expatriate status and may create additional filing problems later.

Key filing and timing points

Timing matters in expatriation cases. Before renouncing citizenship or terminating long-term residency, a person should confirm:

• The exact expatriation date
• Which tax year includes that date
• Whether prior-year returns were filed correctly
• Whether any information returns are missing
• Whether assets need valuation before filing
• Whether Form 8854 can be completed accurately

This is not a process to rush. Once expatriation is complete, some planning options are limited.

Common mistakes to avoid

People often make avoidable errors when they focus only on the citizenship or immigration side of expatriation.

Common mistakes include:

• Assuming renouncing citizenship automatically ends U.S. tax obligations
• Forgetting that the IRS looks back at the prior 5 tax years
• Underestimating the value of private company equity
• Missing the Form 8854 filing requirement
• Ignoring deferred compensation or trust rules
• Overlooking state tax issues before leaving
• Failing to coordinate expatriation with asset sales or liquidity events

A careful review before expatriation can prevent much larger problems later.

Planning before you expatriate

Before giving up U.S. citizenship or ending long-term resident status, it is wise to take a full inventory of your tax position.

A practical pre-expatriation checklist includes:

• Review the last 5 years of federal tax filings
• Confirm that all returns and information statements are complete
• Estimate net worth on the expatriation date
• Value concentrated business holdings
• Identify deferred compensation, retirement accounts, and trust interests
• Model the exit tax under different timing scenarios
• Consider whether a tax professional should prepare or review Form 8854

For high-net-worth individuals and founders, the cost of planning is usually far lower than the cost of correcting a filing mistake after expatriation.

Does everyone need to pay the exit tax?

No. The existence of the exit tax does not mean every expatriating person owes tax.

Many individuals do not meet the covered expatriate thresholds. Others may qualify for an exception, or their asset values may not generate taxable gain above the exclusion amount. But the analysis must be done carefully. A small mistake in asset valuation or compliance history can change the result.

Final thoughts

The U.S. exit tax is one of the most important tax issues to resolve before renouncing citizenship or ending long-term residency. The IRS does not focus only on the act of expatriation. It also looks at prior compliance, net worth, unrealized gain, and filing accuracy.

For entrepreneurs, investors, and anyone with significant assets, the exit tax can be just as important as the legal decision to expatriate itself. The safest approach is to review the rules early, document your tax history, and complete Form 8854 with care.

When the stakes involve business ownership, concentrated stock, or cross-border income, a thorough pre-expatriation review is essential.