Do ITIN numbers expire, and the half of you who should do nothing about it

For 2 years I gave the same answer to this question, and the answer was right for maybe half the people who asked it. Somebody would write and say their ITIN had expired, and I would tell them to file a fresh Form W-7 straight away, before anything else went wrong. People arrive at this letter searching do itin numbers expire, and that is what I told them.

It was not wrong so much as aimed at the wrong half of the people asking. The IRS says in one sentence that a large group of people with expired numbers need to do nothing at all, and I had read that sentence at least 3 times without it landing. For the bank side of the same paperwork, Bank Index lists US banks with the supervisor on each card.

This is the corrected version, and the correction took an afternoon on 2 government pages, which is a humbling ratio when you set it against the 2 years I spent confidently sending people down a path that a single sentence on the first of those pages had already told me most of them did not need to walk. I should have opened the page instead of remembering it.

The rule, which is simpler than the panic around it

Here is the whole expiry mechanism, quoted rather than paraphrased, because paraphrases of this one drift badly.

“If an ITIN isn't used on a U.S. federal tax return for any 3 consecutive tax years, it expires on December 31 after the third tax year of non-use.”

Read the trigger carefully, because it is not what most people assume. Age has nothing to do with it. A number issued in 2015 and used every year since has not expired and will not. It is not a fixed term either, so there is no anniversary to diary. The clock is use, and the unit of use is a federal tax return.

Three consecutive years of not appearing on one, then it lapses on the last day of that December. Nothing arrives to tell you. There is no letter, no email and no status change you can watch, which is why most people discover the expiry from a rejected filing rather than from the IRS.

The sentence I had skimmed for 2 years

Now the part that changes who this page is even for.

“If your ITIN is only used on information returns that report payments you receive, like Form 1099, you don't need to renew it. Expired ITINs may continue to be used on information returns.”

Read that twice. It inverts the usual advice completely. If your number lives only in the paperwork other people file about paying you, an expiry is administratively irrelevant. The 1099 still works, the number still identifies you on it, and nothing needs replacing.

That describes a great many freelancers and single member LLC owners outside the United States who take payment from American clients, never file a return themselves, and get a 1099 at the end of the year. I had been telling those people to renew. It was not harmful advice, but it sent them into a W-7 process that exists for a different situation than theirs, and a W-7 is not a small errand.

The obligation is stated just as plainly on the other side: “You must renew an expired ITIN if it will be included on a U.S. federal tax return.” So the question is not when your number expires. The question is where your number is about to appear, and that is a question about the next 12 months of your filing life rather than about the last 3 years of it, which is why the people who worry hardest about this are so often the ones with nothing to do.

What it actually costs to get this wrong

I had assumed that filing with an expired number meant rejection. It does not, and what actually happens is worse in a quiet way.

“There may be a delay in processing your return. You may not be able to claim certain credits unless your ITIN is renewed. This may result in a reduced refund or penalties and interest.”

Nothing there says refused. The return goes in, it moves slowly, and the credits fall off. That last part is the expensive one and it is the part nobody prices in advance, because a credit that silently does not apply looks exactly like a credit you were never entitled to, and the difference between those 2 things is a renewal you did not know you needed and an amended return filed months after the money was already spent. That is a failure mode nobody notices in the moment, because the filing appears to have worked. You find out when the refund arrives smaller than the arithmetic said it would, by which point the fix is a renewal plus an amendment plus a wait.

I would rather be rejected outright, and I say that as somebody who has never enjoyed a rejection from any tax authority in any country. A rejection is loud and you deal with it in the same week.

The order I would go in now

Work out which of the 2 situations you are in before you touch a form. That takes 1 minute and decides everything else on this page.

If the number appears only on 1099s and other information returns, do nothing. Do not file a W-7, do not pay anybody to file one for you, and do not let a service tell you that an expired number needs fixing when it does not.

If the number is going on a federal return you are about to file, renew it, and renew it before you file rather than after. The renewal uses the same Form W-7 as the original application, with one difference the IRS calls out: in the application type section at the top right, tick “Renew an existing ITIN”.

If you have obtained a Social Security number in the meantime, stop. “Don't renew your ITIN if you get a Social Security number (SSN).” The SSN replaces it, and renewing produces 2 numbers for 1 person, which is a mess that takes correspondence to unwind.

One detail removes a fear rather than adding a task, so it goes here. A renewal does not reset your history: “For an ITIN renewal, the assignment date is the original date the ITIN was assigned before it expired.” You keep the original date, so a renewed number is not a new number wearing old clothes. It is the same number.

And an extension is a separate thing entirely. “You don't need an ITIN to apply for an extension of time to file your tax return.” If the deadline is the pressure and the number is the delay, those 2 problems can be separated.

How to find out whether yours has expired, which is the annoying part

Here is the gap I could not close, and it is the reason people arrive at this question confused rather than informed.

There is no lookup anywhere, and I did check for one. You cannot type your number into a page and be told its status. The IRS does not publish a checker, does not send a notice when the 3 years run out, and does not mark the expiry anywhere you can see from outside. I looked for a status tool and did not find one, and I am not confident enough in that search to promise none exists in some corner of the site.

So the practical method is arithmetic on your own filing history. Take the last federal tax return that carried the number. Count forward 3 full tax years from it, and count tax years rather than calendar years, because the 2 do not line up for anybody who files late and the difference has put at least a few people a whole year out on when their number actually lapsed. If all 3 passed without the number appearing on a return, it lapsed on 31 December of the third one. That is a calculation you can do in 2 minutes with your own records, and it is the only reliable answer available.

My guess is that this single missing feature causes most of the anxiety around the subject. A status page would resolve in 5 seconds what currently takes a person their filing history and a paragraph of rules, and its absence pushes people towards renewing pre-emptively, which is exactly the wasted W-7 this letter is trying to prevent. That is a guess about why people behave as they do, and I would not defend it as anything more.

I find it hard to read the rule as harsh, though. The number lapses because it stopped being used for the 1 purpose it exists for, and it is restored by the same form that created it. What bothers me is not the mechanism, it is that the mechanism is invisible while it runs.

The arithmetic on a real calendar

Take a number last used on a return filed for tax year 2021. That date is the anchor. Everything else follows from it without judgement.

Tax years 2022, 2023 and 2024 pass. In none of them does the number appear on a federal return, because the person is invoicing American clients from abroad, receiving 1099s, and filing nothing in the United States. Three consecutive years of non-use, so the number lapses on 31 December 2025.

Now split that same person into 2 futures, because this is where my old advice went wrong. In the first, nothing changes: the clients keep issuing 1099s, the number keeps working on them, and there is no reason to file a W-7 in 2026 or ever. In the second, something small happens, a US filing obligation appears for one year only, perhaps because of a single piece of effectively connected income or a treaty claim that has to be made on a return rather than assumed, and at that moment the lapsed number becomes an obstacle standing directly in front of a deadline.

The number is identical in both futures. The date of expiry is identical. What differs is one fact about the coming year, and that fact is knowable in advance far more often than people treat it as being.

So the useful question was never whether it expired in 2025. It is whether you will file a return in 2026.

A short digression about what this number is not

Nothing here helps you renew anything, and I have been chewing on it since I wrote a different letter about cards.

The IRS describes the ITIN as issued “for federal tax purposes only”, and lists among the things it does not do: serve as identification outside the federal tax system. That is written by the office that prints the number.

Which makes the expiry mechanism strangely consistent. A number that exists only for tax purposes expires when it stops being used for tax purposes, and stays valid for as long as it keeps doing its 1 job. It behaves less like an identity document and more like a library card, and the frustration people feel about it usually comes from expecting the first thing.

Anyway, that is enough of that, and back to the paperwork.

What I could not establish

I could not confirm the current processing time for a W-7 renewal. The renewal page does not state one. I had a figure of 7 weeks, and 9 to 11 weeks in filing season or from abroad, taken from a different IRS page on 4 August, and I am not going to repeat it here as though I had checked it today, because I have not. If the timing decides something for you, get it from the IRS page on the day you need it.

I also do not know how many expired numbers belong to people who never needed to renew. That figure would settle whether my old advice wasted a few afternoons or thousands of them. The IRS publishes counts of issued numbers, not counts of unnecessary renewals, so the number probably does not exist anywhere.

None of this is tax advice and we are not your accountant. A dependent's number, a treaty position or an ITIN attached to an audit are situations this page does not cover, and they are worth a professional rather than a letter.

The thing I keep returning to is how small the deciding sentence is. It is 1 line on a government page, it has been there the whole time, and it separates the people who must act from the people who must not. I read past it repeatedly because I arrived at the page already knowing what I wanted to confirm, which is the most reliable way I know of to miss something in plain sight.