What an IRS Identity Protection PIN is and why you might need one

An IRS Identity Protection PIN (IP PIN) is a six-digit number the IRS assigns to you to prevent someone else from filing a tax return in your name. If you've been a victim of identity theft, or if the IRS suspects your Social Security number has been compromised, you may receive a letter telling you that you need one to file. You can also request one yourself if you're concerned about your information.

The PIN works like this: when you file your return, you enter it alongside your Social Security number. The IRS uses it to verify that you are actually you. Without the correct PIN, a fraudster cannot file a return using your identity, even if they have your Social Security number and other personal details.

If the IRS has already assigned you a PIN because of a breach or suspected fraud, you must use it to file — filing without it will cause your return to be rejected. If you've never received a PIN letter from the IRS, you do not need one unless you choose to request one for extra protection.

Key Takeaways

  • The IRS mails IP PINs to you by postal mail; there is no online way to retrieve one you've already been assigned.
  • If you received an IRS letter saying you have a PIN, check that letter first — it contains the number you need to file.
  • You can request a new PIN or a first-time PIN through the IRS website at irs.gov/identity-protection-pin, but you must verify your identity first.
  • If you lose or forget your PIN, you can call the IRS at 1-800-908-4490 to request a replacement, though wait times are often long.
  • The IRS issues new PINs each year, usually in late December or early January, and mails them to your address on file.

Finding a PIN the IRS has already sent you

If the IRS assigned you a PIN because of identity theft or a data breach, they sent it to you by mail at the address they have on file. Check your mailbox for a letter from the IRS — it will be labeled with a notice number like CP01, CP40, or similar, and it will clearly state that you have been assigned an IP PIN.

The letter itself contains your PIN. Write it down and keep it in a safe place. You will need this exact number when you file your tax return, whether you file on paper or electronically. If you file before receiving the letter, your return will be rejected, and you'll have to file again once you have the PIN.

If you believe the IRS sent you a PIN letter but you cannot find it, do not assume you don't have one. Contact the IRS directly at 1-800-908-4490 to confirm whether a PIN has been assigned to you and to request a replacement.

Requesting a PIN through the IRS website

You can request an IP PIN through the IRS website at irs.gov/identity-protection-pin if you want one for protection even though the IRS hasn't assigned one to you yet. You can also use this tool to request a new PIN if you've lost the one you were sent.

To use the online tool, you will need to verify your identity. The IRS uses a service called Secure Access, which asks you questions about your financial history and personal details that only you should know. This process takes a few minutes and happens entirely online.

Once you've verified your identity, the IRS will either display your existing PIN on the screen or allow you to request a new one. If you request a new PIN, the IRS will mail it to you within two weeks. Write down any PIN displayed on screen immediately, because you won't be able to retrieve it later through the website.

Calling the IRS to get or replace your PIN

If you cannot use the online tool or prefer to speak with someone, you can call the IRS at 1-800-908-4490. This line is specifically for IP PIN requests and identity theft issues. Have your Social Security number, date of birth, and filing status ready when you call.

Wait times on this line are often long, especially during tax season (January through April). Call early in the morning or later in the afternoon for shorter waits. The IRS also offers a callback option — you can request that an agent call you back instead of waiting on hold.

When you reach an agent, tell them you need to request or replace an IP PIN. They will verify your identity by asking questions about your tax history and personal information. Once verified, they can tell you your existing PIN or issue you a new one. If they issue a new one, they will mail it to you.

Understanding when your PIN changes

If the IRS has assigned you an IP PIN, they issue a new one each year. The new PIN is mailed to your address on file, usually in late December or early January, before the tax filing season begins. You must use the new PIN when you file your return for that tax year.

This annual change is automatic — you do not need to request it. However, you do need to watch for the letter containing your new PIN. If you move, make sure your address is current with the IRS so the letter reaches you. If you don't receive your new PIN by mid-January, contact the IRS to request one.

Once you file your return using your PIN for a given tax year, you cannot use that same PIN again. The IRS will issue you a different PIN the following year. This rotation is part of how the system prevents fraud.

What to do if you never receive your PIN in the mail

If the IRS assigned you a PIN but you did not receive the letter, or if you requested one online and it never arrived, contact the IRS at 1-800-908-4490. Confirm that a PIN was actually issued to you and ask them to verify the address where it was mailed.

If your address has changed since the PIN was mailed, the letter may have gone to an old address. You can request that the IRS mail a replacement to your current address, or ask them to provide the PIN over the phone during that call. Providing it over the phone is faster if you need to file soon.

If you file your return without using your assigned PIN, the IRS will reject it. You'll have to correct your return and resubmit it with the correct PIN. This delays your refund, so it's worth tracking down your PIN before you file.

Using your PIN when you file your return

When you file your tax return — whether on paper or electronically — you will enter your IP PIN in a specific field on the form. If you file electronically, your tax software will ask for it. If you file on paper, you'll write it on Form 1040 or whichever form you use.

The PIN goes in the "IP PIN" field, which is clearly labeled. Do not put it anywhere else on the form. If you file electronically and enter the wrong PIN, the return will be rejected immediately, and you'll see an error message telling you to correct it.

If you file on paper and forget to include your PIN, or include the wrong one, the IRS will reject your return by mail. You'll receive a notice explaining the problem and instructions for resubmitting. This adds weeks to the processing time, so double-check your PIN before you submit.

Frequently Asked Questions

Can I get my IP PIN online without verifying my identity?

No. The IRS requires identity verification before showing or issuing a PIN, whether you use the website tool or call. Verification protects you from someone else requesting your PIN. The online verification process through Secure Access takes a few minutes and uses questions only you should be able to answer.

What if I file my return and then realize I used the wrong PIN?

If you filed electronically, the IRS will reject your return immediately and send you an error message. You'll need to correct the PIN and resubmit. If you filed on paper, the IRS will reject it by mail and send you instructions to file again. In both cases, your refund will be delayed until you resubmit with the correct PIN.

Do I need an IP PIN if I've never had identity theft?

No, you do not need one unless the IRS assigns one to you or you choose to request one for extra protection. If you want one for peace of mind, you can request it through irs.gov/identity-protection-pin or by calling 1-800-908-4490. The choice is yours.

What happens if someone files a return using my Social Security number but I have an IP PIN?

Their return will be rejected because they won't have your correct PIN. The IRS will then contact you to confirm that you filed a return. This is one of the main reasons the PIN system exists — it stops fraudsters even if they have your Social Security number and other personal information.

Can I use the same IP PIN for multiple years?

No. The IRS issues a new PIN each year, and you must use the new one when you file. Once you file a return using a PIN for a given tax year, that PIN is no longer valid. The IRS will mail you a new PIN the following year.