Does a Spanish NIE number expire? Validity, renewal and lost numbers

It usually comes up at a counter. A bank clerk looks at the sheet of paper, frowns, and says the NIE has expired. Or the sale is a week away and nobody can find the certificate that was issued three years ago.

Both moments produce the same question, and the same wrong answer gets given constantly. A NIE number does not expire. There is no renewal procedure, and there never was one. What can expire is a card or a piece of paper, which is a different thing, and the fix depends on which of the two is actually missing.

The number is assigned once, for life

Article 205 of the current Immigration Regulation, Royal Decree 1155/2024, describes the NIE as a number that is personal, único y exclusivo and sequential. Personal, unique and exclusive. It adds that the number has to appear on every document issued to you or processed for you.

Three consequences follow, and they answer most of the questions people arrive with.

The number has no end date, so there is nothing to renew. It cannot be reassigned to anyone else. And you cannot hold two of them: if you apply again, the system returns the number you already have. That last point matters more than it sounds, and we come back to it below.

What actually does expire

Two things, neither of which is the number.

The TIE card. Non-EU nationals resident in Spain hold a Tarjeta de Identidad de Extranjero, and that card carries an expiry date tied to the residence authorisation behind it. When it runs out you renew the card. Your NIE stays exactly the same, printed on the new one.

The freshness of a certificate. The white A4 certificate issued when a NIE is assigned has no expiry date on its face. But banks, notaries and gestorías routinely ask for one issued recently, often within the last three months, before they will use it in a transaction. That is their internal policy rather than a rule of law, and arguing the point at the counter rarely works. The practical answer is to request a fresh certificate, which is quick, rather than to insist the old one is valid, which is true but unhelpful.

Worth adding: the green registration certificate that EU citizens receive carries no expiry date either. We set out how that registration works and why it is not a permit separately.

"Renewing my NIE" is usually one of three different things

When someone is told to renew their NIE, they have almost always been sent to do one of these:

• Renew a TIE card that has reached its expiry date. This is a residence procedure, not a NIE procedure, and it runs on the timetable of the authorisation behind it.
• Obtain a fresh certificate showing the same number, because the counterparty wants a recent document. Form EX-15 again, the same fee, and the same number comes back.
• Register as a resident, which is what an EU citizen staying more than three months has to do. That produces the green certificate, and the NIE already held appears on it.

Identifying which of the three applies takes one question: is the problem the card, the paper, or your status? Everything else follows from that.

Lost your NIE number

The instinct is to apply for a new one. That is precisely what will not work, because of the "único y exclusivo" wording above. A second application returns the same number, and if the details you give do not match the original record, you risk a duplicate entry that then has to be untangled.

Before applying for anything, look at documents you already hold. The number appears on more of them than people expect:

• The title deed (escritura) of a Spanish property
• Any Spanish tax filing, including the annual non-resident return
• Spanish bank account paperwork and the account opening file
• Employment contracts and Social Security documents
• Utility contracts, insurance policies and vehicle registration

If none of that turns it up, the route is a certificate confirming the number already assigned to you, requested with form EX-15 at an Oficina de Extranjería, a police station with an immigration desk, or through a Spanish consulate. Our section-by-section guide to the EX-15 covers the form; it is the same one used for a first application.

Checking whether a NIE is correct

A NIE has a fixed shape: a letter X, Y or Z, then seven digits, then a check letter. Y1234567X is a well-formed example.

That final letter is not decorative. It is calculated, which means an error in the digits produces a letter that does not match, and you can verify a number in a few seconds without asking anyone.

Replace the leading letter with a digit: X becomes 0, Y becomes 1, Z becomes 2. Take the resulting eight-digit number and divide it by 23. The remainder gives a position in this sequence:

T R W A G M Y F P D X B N J Z S Q V H L C K E

Counting from zero, that position is the check letter. Take Y1234567. Replacing the Y gives 11234567. Divided by 23 that leaves a remainder of 10, and the letter in position 10 is X. So Y1234567X is internally consistent, while Y1234567B is not.

A caveat worth stating plainly: this checks the arithmetic, not the existence of the number. A well-formed NIE can still belong to nobody. Only the authorities can confirm that a number is genuinely assigned to a given person.

Frequently asked questions

Does a NIE number expire?
No. It is assigned once and stays valid indefinitely. What expires is a TIE card, if you hold one.

Can I renew my NIE online?
There is nothing to renew. If you need a document showing the number, you request a new certificate rather than a renewal.

Can I have two NIE numbers?
No. The regulation makes the number personal, unique and exclusive. A second application returns the same number.

Is my old A4 certificate still valid?
Legally yes. Whether a specific bank or notary will accept it is a separate question, and many will not if it is more than a few months old.

Does my NIE change when I become a resident?
No. The number carries across to the green certificate or the TIE card unchanged.

Why Buenaley?

Buenaley is a Spanish law firm working with international clients. Most of the people who contact us about an "expired" NIE do not need a new number at all. They need the right document, in the right form, before a deadline that is usually a notarial appointment.

• Certificates and duplicates requested on your behalf, without a trip to the counter
• NIE, padrón and residency handled together where they overlap
• Fixed price, agreed in advance

Not sure whether you need a new certificate or a new procedure? Put your situation to us, or start with the NIE page.