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How Long Is an SMS OTP Valid? (Expiry Times Explained, 2026)

CODASMSUpdated July 2026

Quick answer: Most SMS OTPs are valid for 5 to 10 minutes, or until used once — whichever comes first. Some high-security services expire codes in as little as 60 seconds. The short window is deliberate: it limits how long a stolen code is useful. If yours expires, just request a new one; the old code stops working the moment a new one is issued.

5–10

Typical minutes a code stays valid

Common standard

Uses before a code is dead

By design

60s

Shortest windows on high-security apps

Observed range

The typical lifespan

There's no single global rule, but the common range is 5 to 10 minutes. Within that window you can enter the code once. As soon as you use it — or request a new one — the previous code stops working. Some banking and crypto services shorten this to 1–2 minutes for extra safety.

Why codes expire so quickly

The whole point of a one-time password is to be useful for a moment and then worthless. A short validity window means that even if someone intercepts your code, they have very little time to use it before it dies. Combined with "one use only," expiry is what makes OTPs safer than a static password that works indefinitely.

Two rules in one: an OTP dies either when the timer runs out or the first time it's used — whichever happens first. Requesting a new code also instantly kills the old one.

What to do when a code expires

Request a new one. There's almost always a "resend" or "get a new code" option. The fresh code replaces the old.
Enter it promptly. Have the login screen ready before you request, so you're not racing the clock.
Don't request repeatedly. Spamming resend can trigger a temporary block — see rate-limiting.

Why your code might expire before you even see it

Sometimes a code seems to expire instantly — usually because it was delayed in delivery. If a text takes six minutes to arrive on a slow carrier route and the window was five, it's already dead on arrival. That's a delivery problem, not an expiry problem; our guide on why OTPs don't arrive covers the fixes.

Can you make a code last longer?

No — expiry is set by the service, not the user, and that's by design. What you can control is making sure the code arrives quickly and you're ready to enter it: good signal, correct number, a real mobile (non-VoIP) number, and the login screen open in advance.

Need a code without using your own number?

Get a private phone number that receives the OTP in your dashboard — pay only when the code arrives.

Get a private number

Frequently asked questions

How long is an SMS OTP valid?

Typically 5–10 minutes, or until used once — whichever comes first. Some services use windows as short as 60 seconds.

Why did my OTP expire so fast?

Either the service uses a short window, or the text was delayed in delivery and arrived near the end of its validity. Request a fresh code.

Does using a code end it immediately?

Yes. An OTP works once. After a successful entry it's dead, and requesting a new code also cancels the previous one.

Can I extend an OTP's expiry?

No — the service sets it. You can only make sure the code arrives fast and you enter it promptly.

What happens if I enter an expired code?

It's rejected. Request a new code and enter that one within its window.