Long-Term Resident & the 8-of-15-Year Rule: How 'Any Portion' Counts Years

You are a long-term resident (LTR), and potentially exposed to the US exit tax, if you were a lawful permanent resident (green card holder) in at least 8 of the 15 tax years ending with the year you give up the green card. The trap is in the counting: a tax year counts in full even if you held the green card for only a single day of it. Because both ends of your residency are usually partial years, most people reach the magic number of 8 a calendar year or more sooner than they expect. This guide is about the year-counting mechanics, not the dollars, because for LTR status, the count is everything.

What makes you a long-term resident

The exit tax under IRC 877A reaches two groups: US citizens who renounce, and long-term residents who give up their green card. You are an LTR if you were a lawful permanent resident, a green card holder under the green card test, for at least 8 of the prior 15 tax years. Hit fewer than 8, and you are simply a former green card holder: no Form 8854, no covered-expatriate analysis, no deemed sale. Hit 8, and you walk through the same exit-tax gate as a citizen who renounces.

Being an LTR does not by itself mean you owe anything. It only means you are tested as a potential covered expatriate against the net-worth, tax-liability, and certification tests covered in our exit-tax day-counting guide. But you never reach those tests at all unless you first cross the 8-of-15 line. That is why the year count is the threshold question every long-term green card holder should answer before surrendering.

Why 'any portion' of a year counts as a full year

Here is the rule that surprises people. A year counts toward the 8 if you were a lawful permanent resident at any time during that tax year. There is no requirement that you held the card for the whole year, or for 183 days, or for any minimum number of days. One day of green card status in a calendar year makes that calendar year a counted year. This is the opposite of how the substantial presence test works, where you tally individual days, for LTR status, you tally years.

Consider the practical effect. Someone who became a permanent resident on December 28 of one year and abandoned the card on January 3 of a later year picks up a full counted year at each end, for just a few days of actual residence. Two partial calendar years bracket your green card life, and both count as wholes. That alone can add two years to your count versus a naïve 'how many full years did I have it' estimate.

The one exception: treaty-resident years

There is a single meaningful carve-out. A year does not count toward the 8 if, during that year, you were treated as a resident of another country under a tax treaty and you did not waive the treaty benefits. In plain terms: if a US tax treaty's tie-breaker rules made you a tax resident of the treaty partner for the year, and you actually claimed that position as a non-US resident, that year is excluded from your LTR count.

Claiming treaty-resident status is itself a double-edged sword. For a long-term green card holder, the first year you take a treaty tie-breaker position as a non-US resident is generally treated as an expatriation event, it can start your exit-tax clock rather than just pausing your year count. So while this exception is genuinely useful for people who relocated abroad years ago and have been quietly treaty-resident elsewhere while still technically holding a green card, the moment you formalize a treaty position you may trip the expatriation rules. Coordinate it deliberately rather than claiming it casually to shave a year off your count.

How to count your years step by step

The 15-year window is a rolling lookback that ends with the year you expatriate and reaches 14 years backward. To work out your status, do this:

• Fix the expatriation year. This is the tax year you plan to abandon the green card (or take a treaty position). That year anchors the 15-year window.
• List the 15 tax years. Write down the expatriation year and the 14 years before it.
• Mark every year you held the card for any part of it. Use the date your status began (Form I-551 / admission as a permanent resident) and the date it ended. Both partial years at the ends count.
• Remove qualifying treaty years. Subtract any year you were a treaty resident of another country and claimed non-US-resident treatment (with the warning above firmly in mind).
• Add up the marked years. If the total is 8 or more, you are a long-term resident for the expatriation year.

Because the window rolls, the same green card history can put you under 8 if you expatriate in one year and over 8 if you wait. The arithmetic is sensitive to a single year boundary, which is exactly why a clean record of when your status began and when it will end is worth keeping. A simple presence and status log (the kind our day counter guide describes) gives you defensible start and end dates instead of a guess.

Timing the surrender to stay under 8

The single most valuable lever is which year you surrender. Because the end year always counts in full, abandoning in your 7th counted year keeps you at 7; waiting until even the first day of your 8th counted year pushes you to 8 and into LTR status. For green card holders who never intended to stay permanently, and who have appreciated assets, this one decision can be the difference between a clean exit and a mark-to-market deemed sale of a worldwide portfolio.

• Count before you act. Most people overestimate how many full years they need; the partial-year rule means 8 counted years can arrive after roughly six full years of residence.
• Abandon formally and dated. Surrender with Form I-407 (or a USCIS/consular action) and keep proof of the effective date, that date sets your final counted year. See I-407 timing for the mechanics.
• Don't sleepwalk past year 8. Many long-term residents drift into LTR status simply by holding a card they no longer use. Inaction is a choice that counts a year.
• Mind the year boundary. Abandoning in late December versus early January can change your final count by one, and one is all that separates 7 from 8.

Crossing 8 years does not automatically mean a tax bill, it means you get tested as a potential covered expatriate. Whether anything is actually owed turns on net worth, tax history, and a clean five-year compliance certification on Form 8854, all of which we cover in the exit-tax guide. But the gate you control most directly is this one: the year count. Get it right and the rest of the analysis may never start.