The Green Card Exit Tax: Why Your Biggest Immigration Upgrade Has a Hidden Cost

Kavita messaged me in September. She and her family had spent the summer in France — the south, a rented house, school-age kids who came back speaking fragments of French and asking why they couldn't stay. Her husband had found remote work options. She was seriously running numbers on a move. Then she discovered the exit tax.

Kavita is in the Bay Area. She's worked in tech for twelve years. She got her green card in year three and hasn't thought much about it since — it's the thing that let her stop worrying about visa renewals. She has a house, RSUs that have vested over the years, a brokerage account, retirement accounts. Standard portfolio for her cohort.

She's also, without realizing it, been building the preconditions for a significant tax bill if she ever decides to leave.

This isn't a warning against moving. It's an explanation of a tax that exists, that most green card holders don't know about, and that becomes more expensive the longer you wait to understand it.

What the Exit Tax Is

Section 877A of the US Internal Revenue Code imposes an "expatriation tax" when certain US persons renounce citizenship or formally abandon a long-term permanent resident status — a green card held for 8 or more of the last 15 calendar years.

The mechanism: on the day you expatriate, the IRS treats you as having sold every asset you own at fair market value. Any unrealized gain above an annual exclusion amount ($866,000 in 2024, inflation-adjusted annually) is taxed as if you actually sold it. You pay capital gains on paper gains you haven't realized. Then you leave.

This only applies if you're a "covered expatriate." You're covered if you meet any one of three conditions:

• Net worth of $2 million or more on the expatriation date
• Average annual US net income tax for the five years before expatriation exceeds $201,000 (2024 threshold, indexed)
• Failure to certify five years of US tax compliance on Form 8854

For a Bay Area tech professional who's been employed for 10+ years, the net worth threshold is the one that bites. Home equity plus vested RSUs plus a brokerage account plus retirement accounts often clears $2M without anyone having thought of themselves as wealthy enough to face an exit tax.

Kavita's Numbers

She worked through the math over a weekend. House: purchased in 2019, current equity roughly $600,000. Brokerage: $450,000, most of it in positions purchased years ago with significant unrealized gains. Roth IRA and 401k: around $650,000. RSUs still vesting: complex to value. Total: comfortably above $2M.

She's been a green card holder for 12 years. The 8-year threshold passed four years ago without her noticing. She is, under current law, a long-term permanent resident for exit tax purposes.

If she formally abandons her green card to move to France:

For Kavita's actual situation, with RSUs that have vested over many years at various prices and a property that's appreciated significantly, the realized unrealized gains are well above the exclusion threshold. The exit tax bill is real and calculable.

The Problem With Keeping the Green Card "Just in Case"

A common response to learning about the exit tax: "I'll just keep the green card and live in France. I can figure out the status later."

This is usually worse. A green card holder is a US tax resident for US purposes regardless of where they physically live. Moving to France without formally abandoning the green card means you're a tax resident of both countries simultaneously. You owe US tax on worldwide income — including French salary and French investment income — and French tax on worldwide income. The France-US tax treaty provides relief in specific situations, but it doesn't eliminate the double-filing requirement. And France's social charges (not technically taxes but effectively are) don't have treaty relief.

The math on this is typically worse than the exit tax. Paying once to leave cleanly is usually better than paying in two countries indefinitely.

The right question is not "how do I avoid the exit tax" but "what is the actual cost, and does that change the decision." For some people the exit tax is modest and the move still makes sense. For others it's the number that closes the conversation.

The Planning Window That Most People Miss

The exit tax is expensive but not random. Its size is determined by two variables: net worth above $2M, and unrealized gains above the exclusion. Both can be managed with enough lead time. Neither can be managed on the week you decide to leave.

For someone who knows at year 5 or 6 of their green card that they may want to return to their home country, the planning window is years 6 and 7 — before the 8-year threshold that triggers "long-term permanent resident" status. Options that exist in that window:

Realize gains strategically before the exit date. Assets with large unrealized gains contribute most to the deemed-sale calculation. Selling in years before the exit — and paying capital gains at ordinary rates, but over several years — can reduce the deemed-sale liability significantly. The tradeoff: you pay tax now instead of at exit, but you control the timing and the bracket.

Use a Donor-Advised Fund for appreciated assets. Donating appreciated stock to a DAF removes it from the taxable estate, generates a current charitable deduction, and eliminates the embedded gain from the exit tax calculation. This only works for people who were planning charitable giving anyway — using a DAF as pure exit-tax avoidance without actual charitable intent is not a strategy.

Time the green card abandonment before year 8. If someone is genuinely planning to leave within the next 2–3 years and has been on a green card for 5 years, abandoning it before the 8-year anniversary avoids the long-term permanent resident classification entirely. The simpler exit tax rules (or none) apply. This requires certainty about the decision — abandoning and then returning has its own complications.

The Form You File When You Leave

If you're abandoning a green card, you file Form I-407 with USCIS. Separately, you file Form 8854 (Initial and Annual Expatriation Statement) with the IRS in the year you expatriate. Form 8854 requires you to certify five years of US tax compliance and to compute the deemed sale on all covered assets.

Failing to file Form 8854 — or filing it incorrectly — triggers the third covered expatriate condition automatically, regardless of net worth or income. This means someone with $1M in assets and modest income becomes a covered expatriate purely due to administrative failure. The exit tax then applies even where it otherwise wouldn't.

This is not a form you file without professional help. An international tax attorney (not just a CPA — someone with specific expatriation experience) is appropriate for anyone above the $2M threshold or near it.

Where Kavita Landed

She's still in the Bay Area. The summer in France was what it was. The financial reality of leaving — the exit tax on top of the cost and disruption of an intercontinental move — was the conversation she and her husband needed to have clearly before it could inform the decision rather than ambush it.

She's not ruling out a move in 3–5 years. She's now planning for it rather than dreaming about it. Those are different things, and the difference is mostly the exit tax calculation sitting in a spreadsheet instead of being discovered the week she wanted to submit the paperwork.

The green card is a remarkable thing. It removed enormous uncertainty from her professional life. It also accumulated a financial obligation quietly, in the background, for twelve years. That obligation isn't a punishment — it's a known cost that requires knowing about it to plan around. Most people don't find out until they want to leave.