Giving up your US green card: I-407, the 8-year line, and the exit tax question most people miss

The short version. Filing Form I-407 to abandon a US green card is also a tax event, and the date that matters is the day you mail it — not the day USCIS processes it (Treas. Reg. §301.7701(b)-1(b)(3)). If you held the card in 8 of the last 15 years, you’re a “long-term resident” and must file Form 8854. Only if you also clear one of three thresholds (net worth ≥ $2M, high recent tax bills, or you can’t certify 5 years of compliance) do you become a “covered expatriate” and face the exit tax. The year you leave is a dual-status year with real gotchas — starting with losing the standard deduction. Count your years and run the tests before you file.

I moved between the US and Japan on a work visa, not a green card, so I never filed I-407 myself. What follows is what I pieced together from IRS instructions and cross-border firm write-ups while sorting out my own version of this question. Treat it as a research-based decision map, not tax advice. The dollar figures come from IRS and firm sources current as of 2026; confirm them against the official pages before you act.

What actually ends your US tax residency

There are two separate clocks here, and people mix them up constantly.

Immigration status ends when USCIS accepts Form I-407 (Record of Abandonment of Lawful Permanent Resident Status). It’s free to file.

Tax residency ends on the date you mail I-407 — certified mail, return receipt requested, or the foreign equivalent — under Treasury Reg. §301.7701(b)-1(b)(3). USCIS receipt and processing dates don’t control.

Why this matters in real money: mail I-407 on December 20, 2025, and even if USCIS doesn’t log it until January 5, 2026, your final US resident tax year is 2025. Slip past year-end and you’ve added a whole extra year of worldwide US taxation — plus, as you’ll see, possibly an extra year on the 8-of-15 count.

You can also complete I-407 in person at a US embassy or consulate; the signed-and-accepted date at the consulate is what controls. Worth verifying against the current USCIS I-407 instructions before you rely on a specific date.

One trap: a green card can be deemed abandoned by USCIS (e.g., more than a year abroad without a reentry permit). Deemed abandonment muddies the controlling tax date. Filing I-407 yourself gives you a clean, documented date — which is exactly what you want when timing is everything.

The 8-year line: are you even a “long-term resident”?

Form 8854 and the whole exit-tax machinery only apply if you’re a long-term resident (LTR): someone who was a lawful permanent resident in at least 8 of the 15 immediately preceding tax years (IRC §7701(b)(6)).

Partial years count as full years. Got your green card in December of Year 1? Year 1 counts. Abandon in early January of Year 8? That January counts too. The December-31-vs-January-1 boundary can be the difference between never touching Form 8854 and triggering the full covered-expatriate analysis.

If you’re anywhere near your 7th or 8th holding year, do the count before you file I-407. This is squarely a question for a cross-border tax professional — the forum chatter about “just file before New Year” is a consideration to verify, not a plan to copy. The cost of getting the count wrong (an entire covered-expatriate exit tax you could have avoided) is large enough that the count itself is non-negotiable.

The three covered-expatriate tests

Being an LTR means you file Form 8854. It does not automatically mean you owe exit tax. You only become a covered expatriate — and face IRC §877A — if you meet any one of these:

That third test is the sneaky one. Even a modest earner with a small net worth becomes a covered expatriate if they can’t truthfully certify five years of full US tax compliance. If you’ve been sloppy about filing while abroad, that’s your real risk — not the $2M line. (This is the same compliance discipline I write about in my notes on the first tax year after leaving the US.)

The net worth test includes everything, worldwide: retirement accounts, real estate, deferred comp, foreign trust stakes. The $2M figure hasn’t moved in roughly 18 years, so more people clear it every year through nothing but asset inflation.

What the exit tax actually taxes

If you’re a covered expatriate, IRC §877A treats all your worldwide property as sold at fair market value the day before you expatriate. Only the gain above an inflation-adjusted exclusion gets taxed:

• 2025: first $890,000 of gain excluded
• 2026: first $910,000 of gain excluded

Gain above that is taxed at ordinary income or capital gains rates depending on the asset. (Confirm the 2026 figure against Rev. Proc. 2025-32 directly before relying on it.)

Two carve-outs worth knowing:

• Deferred compensation — most 401(k)s and IRAs — is not marked to market. Instead, a flat 30% withholding applies to future distributions, unless a tax treaty reduces it. The US–Japan treaty is exactly where this gets interesting, and it’s why I keep what happens to a 401(k)/IRA after moving to Japan as its own separate piece — don’t assume the 30% is final without checking the treaty.
• Non-grantor trust interests have their own rule: the trustee withholds 30% of distributions to a covered expatriate.

One downstream sting worth flagging for your family: under IRC §2801, US persons who later receive a gift or inheritance from a covered expatriate owe a separate tax at the top gift/estate rate (currently 40%). If your kids stay US persons, your expatriation can hand them a future tax bill — plan for it.

The dual-status final year (where the small money leaks out)

The year you abandon is a dual-status year: resident alien from Jan 1 through your I-407 date, nonresident for the rest.

The mechanics that quietly cost you:

• No standard deduction. Dual-status filers must itemize, and only deductions allocable to the resident period count (IRS Pub. 519). For 2025 that’s roughly $15,000 of standard deduction you simply forfeit as a single filer.
• Joint filing is generally off the table without a specific IRC §6013(g)/(h) election — which itself feeds back into the exit-tax analysis.
• Filing structure: a Form 1040 (“Dual-Status Return”) for the resident portion plus a Form 1040-NR (“Dual-Status Statement”) for the nonresident portion.
• Form 8854 attaches to your return for the year of expatriation, and a separate copy goes to the IRS. Miss it and the statutory late-filing penalty is $10,000 (IRS Form 8854 Instructions, 2025; some sources conflate this with other penalties — verify against the current Form 8854 instructions).

Your decision map

• Held the card 7 or fewer of the last 15 years → you’re not an LTR. File I-407 cleanly by certified mail, keep the receipt, done. No 8854, no exit tax.
• Near the 7-to-8-year boundary → stop and count before filing. The partial-year rule and the year-end date can flip your whole outcome. Get a professional to confirm the count.
• An LTR but under all three thresholds → you file Form 8854 but owe no exit tax. Your priority is being able to certify 5 years of compliance — fix any gaps first.
• An LTR who clears a threshold → you’re a covered expatriate. Model the mark-to-market gain against the ~$890k–$910k exclusion, and separately map your 401(k)/IRA 30% withholding under the treaty. This is professional-grade work.

Weighed against the numbers above — a forfeited standard deduction, a $10,000 penalty, a potential seven-figure deemed sale, a 40% downstream tax on your heirs — a few hundred dollars for a cross-border return in the year you leave is cheap insurance. One place to start is Taxes for Expats, a US–Japan expat firm; that link takes $25 off your first filing. (Full disclosure: that’s a referral link and I may receive a small credit if you use it — it’s one option to compare, not the only one, and not an endorsement over your own diligence.)

FAQ

Does filing I-407 automatically mean I owe exit tax?

No. I-407 ends your status; the exit tax only reaches covered expatriates — long-term residents (8-of-15 years) who also clear the net-worth, tax-liability, or compliance test. Many people who abandon a green card file Form 8854 and owe nothing.

If I mail I-407 in December but USCIS processes it in January, which year is my last resident year?

The mailing date controls for tax purposes (Treas. Reg. §301.7701(b)-1(b)(3)), so a December mailing makes that year your final resident year even if USCIS logs it in January. Use certified mail with return receipt and keep proof — the date is doing a lot of work.

What happens to my 401(k) if I’m a covered expatriate?

401(k)s and most IRAs aren’t marked to market. Instead, future distributions face 30% US withholding unless a tax treaty lowers it — and the US–Japan treaty is exactly where that gets negotiated. Confirm the treaty treatment with a professional before assuming any rate; I keep the details in a separate article because it’s genuinely account-specific.