US Expatriation Tax: Section 877A Rules Explained

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If your net worth has crossed $2 million, the IRS treats your departure from the United States as a taxable event — even before you board the plane. Under Section 877A of the Internal Revenue Code, the government deems you to have sold every asset you own on the day before you renounce citizenship or abandon a long-term green card. That phantom sale can generate a six-figure federal tax bill with no cash proceeds to pay it.

This guide explains who qualifies as a "covered expatriate," how the mark-to-market calculation works, why retirement accounts create the worst surprise, and what Green Card holders need to know before the 8-of-15 years window closes. If you are working through the broader question of FEIE vs. foreign tax credit as an overseas American, exit tax is the end-state scenario worth understanding now, not after the wire clears.

Who Qualifies as a Covered Expatriate

Section 877A applies to two categories of people: U.S. citizens who formally renounce citizenship and long-term residents who terminate their lawful permanent resident status. Not every person who leaves triggers the rules. You become a covered expatriate only if you meet at least one of three tests on the date of expatriation.

Test	2024 Threshold	2025 Threshold	How to Fail It
Net Worth	$2,000,000+	$2,000,000+	Worldwide assets minus liabilities ≥ $2M on expatriation date
Average Annual Net Tax Liability	$201,000+	$206,000+	Average of 5 preceding years of federal income tax owed exceeds threshold
Tax Compliance Certification	N/A	N/A	Failure to certify on Form 8854 that all US federal obligations were met for 5 prior years

The net worth test is the one that catches people off-guard. It uses worldwide assets — real estate in Portugal, a brokerage account in Singapore, a US 401(k) — with no exclusion for a primary residence. If the combined fair market value of everything you own exceeds $2 million on expatriation day, you are a covered expatriate regardless of income or compliance history.

The compliance test is effectively a default trap. If you have not filed five consecutive years of US tax returns before expatriating, you automatically become a covered expatriate even if your net worth is $300,000. That $10,000-per-year Form 8854 penalty then compounds on top of any unpaid tax.

How the Mark-to-Market Tax Works

Section 877A requires covered expatriates to treat all property as if it were sold for fair market value on the day before the expatriation date. The IRS calls this a "deemed disposition." All gain is recognized and taxable in the year of expatriation, regardless of whether any actual sale occurred.

One exclusion reduces the taxable gain — but it only applies to assets subject to mark-to-market, not to deferred compensation accounts (more on that below). The exclusion is adjusted annually:

• 2024 exclusion: $866,000
• 2025 exclusion: $890,000

Gains above the exclusion are taxed at long-term capital gains rates (currently up to 20% federal) plus the 3.8% Net Investment Income Tax. State taxes apply based on domicile at expatriation.

Losses on deemed dispositions can be recognized but are subject to normal capital loss limitation rules. An underwater rental property can reduce your net gain — but only up to the amount of gain from other assets. You cannot create a net loss that offsets ordinary income from a 401(k) distribution.

Green Card Holders: The 8-of-15 Years Rule

Section 877A does not apply to every green card holder who leaves the United States. It applies only to "long-term residents" — defined as individuals who held lawful permanent resident status in at least 8 of the 15 tax years immediately preceding the year they terminated residency.

This distinction matters enormously. A foreign national who held a green card for six years and then returned home is not subject to Section 877A at all. The same person who held a card for nine years and then left falls squarely within the rules — identical exit tax exposure to a US citizen.

Green Card Duration	Long-Term Resident?	Section 877A Applies?
1–7 tax years (out of last 15)	No	No — can abandon residency without exit tax
8 or more tax years (out of last 15)	Yes	Yes — same rules as citizens if covered expatriate thresholds met
US Citizen (any duration)	N/A	Always — no carve-out for short residency

The 15-year lookback window is not a simple count of calendar years since obtaining the card. It measures tax years in which the person was a lawful permanent resident. A green card holder who had administrative processing gaps, abandoned and reinstated their card, or spent years with deferred status may have fewer qualifying years than expected. Confirm the actual LTR count with a tax attorney before taking any action.

A narrow planning window exists between years 7 and 8. A green card holder approaching the 8-year mark who is confident they want to exit the US tax system permanently may benefit from timing departure before the threshold triggers Section 877A. This is an irreversible decision that warrants professional guidance. For context on what ongoing US obligations look like before that point, the expat 401(k) and IRA guide covers the key retirement account rules for overseas Americans.

The 401(k) and IRA Trap

The mark-to-market exclusion of $890,000 only reduces gain on assets subject to the deemed sale. Deferred compensation accounts receive different — and typically worse — treatment under Section 877A.

Ineligible Deferred Compensation: IRAs, 401(k)s, and Pensions

Traditional IRAs, 401(k)s, and most defined-benefit pension plans are classified as "ineligible deferred compensation." On the day before expatriation, a covered expatriate is treated as having received a lump-sum distribution equal to the entire present value of the account. That full amount is immediately taxable as ordinary income in the year of expatriation — at rates up to 37% federal, not the lower capital-gains rates. The $890,000 MTM exclusion does not apply to this calculation.

After expatriation, any future actual distributions from the account to the now-nonresident are also subject to 30% withholding at the source. Depending on the applicable tax treaty — and whether the covered expatriate has waived treaty rights — that rate may be reduced. But a covered expatriate who already owed the lump-sum tax on day one may be paying tax twice on the same dollars through a poorly structured plan.

Eligible Deferred Compensation: Some Employer Plans

Certain employer-sponsored plans can qualify as "eligible deferred compensation" if the payor is a US citizen or resident, a domestic partnership or corporation, or a foreign corporation that has elected domestic treatment for this purpose. Eligible plans skip the immediate lump-sum tax — instead, the payor withholds 30% on each future taxable distribution. The election requires advance coordination with the plan administrator. Most individual 401(k) administrators are unfamiliar with this classification.

Specified Tax-Deferred Accounts

529 education plans, Health Savings Accounts, Coverdell Education Savings Accounts, and Archer Medical Savings Accounts are treated as fully distributed on the day before expatriation. The full balance is taxable as ordinary income, and applicable early-distribution penalties still apply on top of the exit tax.

Form 8854: What You Must File

Form 8854 ("Initial and Annual Expatriation Statement") is the central compliance document under Section 877A. Every person subject to the law — both covered and non-covered expatriates who meet the initial conditions — must file it. The penalty for failure is $10,000 per year of non-compliance, with no automatic waiver.

Step-by-step compliance sequence:

1. File 5 years of complete US tax returns before expatriating. Any gap makes you a covered expatriate by default under the compliance test.
2. File any outstanding FBARs through FinCEN's BSA E-Filing system (fincen.gov). FBAR is required for any year you held a foreign financial account with an aggregate balance exceeding $10,000. Missing FBAR filings are a separate compliance failure that also threatens the Form 8854 certification.
3. Certify compliance on Form 8854, Part I. This covers income tax, FBAR, FATCA (Form 8938), gift and estate returns, and any employment taxes.
4. Calculate and report deemed dispositions on Form 8854, Part IV (covered expatriates only). List every asset, fair market value, adjusted basis, and computed gain or loss.
5. Report deferred compensation on Form 8854, Part V. Classify each account as eligible or ineligible and report the taxable amount.
6. Attach Form 8854 to your final US income tax return (Form 1040 or 1040-NR) and file by the normal return deadline, including extensions.
7. Pay the exit tax with the return, or file a deferral election with adequate security.

Section 2801: The Downstream Tax on US Heirs

Renouncing citizenship does not stop the IRS from reaching into your estate when you later transfer property to US persons. Under Section 2801, US citizens and residents who receive gifts or inheritances from covered expatriates owe a 40% tax on the taxable amount received. Final IRS regulations took effect for covered gifts and bequests received on or after January 1, 2025.

This tax is paid by the US-person recipient, not the covered expatriate's estate. It is reported on Form 708 ("United States Return of Tax for Gifts and Bequests Received from Covered Expatriates"). A US citizen child who inherits $1,000,000 from a covered-expatriate parent owes $400,000 in Section 2801 tax — in addition to any applicable estate or income tax triggered by the inherited assets. No treaty reduction is available under Section 2801.

Deferral Election: Buying Time on Illiquid Assets

If the mark-to-market tax would force a fire sale of illiquid assets — rental property, a business interest, a private fund stake — Section 877A allows a covered expatriate to elect to defer payment of the tax on specific assets, asset by asset.

Deferral conditions:

• File the election on Form 8854 with a specific asset-level deferral schedule
• Provide adequate security to the IRS — typically a bond or pledge of the deferred asset itself
• Make an irrevocable waiver of any applicable US tax treaty provision that would otherwise prevent assessment or collection

The deferred tax becomes due by the earlier of: the return due date for the year the asset is sold, or the return due date for the year of the covered expatriate's death. Interest accrues at the federal underpayment rate — currently in the 7–8% range — compounded daily from the original expatriation due date. On a $300,000 deferred balance, three years of compounding interest adds roughly $70,000 to the total cost before the underlying asset is even sold.

Banking and Brokerage Access After Expatriation

One underappreciated complication is that many US banks close accounts once they learn the account holder is no longer a US resident or citizen. Planning ahead matters. Maintaining a domestic US account with an internationally accessible bank like Charles Schwab during the 18–24 months around expatriation simplifies the mechanics of receiving any final US-source income, collecting tax refunds, and managing the withholding compliance requirements from residual deferred compensation payments. Schwab's international-friendly account structure and no-fee ATM access abroad make it one of the few US banks that remains practical for non-residents. If you are managing a US-registered business through this period, Mercury Bank handles US business entity banking for owners operating abroad.

Pre-Expatriation Planning Checklist

The following is a reference framework for conversations with a tax attorney, not a substitute for one.

• ☐ Determine LTR status if a green card holder — count qualifying tax years against the 15-year window
• ☐ Get a current net worth statement with worldwide assets at fair market value, including foreign real estate and business interests
• ☐ File any missing US tax returns and FBAR filings for the 5 years before the planned expatriation date
• ☐ Model Roth conversions or structured IRA withdrawals in low-income years before net worth crosses $2M
• ☐ Identify all ineligible deferred compensation accounts and calculate the ordinary-income tax hit at current rates
• ☐ Identify 529 accounts, HSAs, and Coverdell accounts subject to immediate distribution treatment
• ☐ Assess which assets are illiquid enough to warrant a deferral election — and whether accruing interest at 7–8% compounded makes it worthwhile
• ☐ Review estate plan for Section 2801 exposure for US-citizen or US-resident beneficiaries (effective January 1, 2025)
• ☐ Ensure US banking and brokerage access for at least 18 months post-expatriation to manage final returns, amended filings, and withholding compliance
• ☐ Consult an international tax attorney before filing Form I-407 (green card abandonment) or completing DS-4081 (citizenship renunciation)

Data Notes

Sources checked June 2026. Net worth test: $2,000,000 (not inflation-adjusted). 2025 income test threshold: $206,000; 2025 MTM exclusion: $890,000 — both from IRS 2025 Form 8854 Instructions. Section 2801 final regulations effective January 1, 2025, as noted on the IRS estate and gift tax updates page. All thresholds are subject to annual inflation adjustment; verify current figures at irs.gov before acting.

Conclusion

The US exit tax is one of the few areas of international tax law where a single planning decision — specifically when to cross the 8-year mark on a green card, or how much is sitting in a traditional IRA — can shift a six-figure tax bill by several hundred thousand dollars. The covered-expatriate thresholds are low enough to affect remote founders, long-term green card holders, and any investor whose portfolio has compounded past $2 million.

The mark-to-market mechanism is aggressive but modelable. What surprises most people is the retirement account rule: the full balance of a traditional IRA or 401(k) is taxable as ordinary income in the year of departure, with no access to capital-gains rates or the $890,000 MTM exclusion. Section 2801 extends the reach into your estate, taxing US-person heirs at 40% on gifts and bequests effective January 1, 2025. None of these outcomes are reversible once the expatriation date passes.

For the full landscape of ongoing US tax obligations that apply while you are still abroad but not yet at this decision point, the US expat banking and taxes guide covers the reporting stack that precedes any exit decision.

Disclaimer: This article is for informational purposes only and does not constitute tax, legal, or financial advice. Exit tax rules under Section 877A are complex, fact-specific, and subject to change through IRS guidance and annual inflation adjustments. Consult a licensed US international tax attorney or CPA before making any decision related to expatriation.