IRS phone scam: how to tell a fake back taxes call from a real one

Does the IRS call you about back taxes?

The IRS can call about back taxes, but only after it has written to you first. Its own guidance says first contact normally comes by letter through the U.S. Postal Service, so a call about a debt you have never received a notice for is the single biggest sign of an IRS phone scam.

An IRS phone scam is a call, voicemail or robocall from a criminal pretending to be an IRS employee, usually claiming you owe back taxes or skipped a return and must pay today. In its 2026 Dirty Dozen list (IR-2026-30, March 5, 2026) the IRS warned that these calls now use spoofed caller ID and computer-generated voices, which makes the number and the voice unreliable as proof.

Real phone contact does happen in three situations: a revenue officer handling your collection case may call to set up a meeting, an auditor may call to discuss a mail or office exam already announced in writing, and a private collection agency working for the IRS may call after you receive Notice CP40. In every case, a letter came first.

What do IRS scam calls say?

Back taxes scam calls follow a short script built on fear and a deadline. The caller tells you a debt or unfiled tax returns problem has reached a legal stage, then offers a way to make it go away if you pay in the next hour.

Scripts reported most often

• The warrant script: a "lawsuit" or "arrest warrant" has been issued for unpaid back taxes, and local police will come unless you pay now.
• The unfiled tax returns scam call: you failed to file for several years and face a fine that must be settled on the call.
• The license or immigration threat: your driver's license, business license or immigration status will be revoked.
• The prerecorded urgent message: a robotic voicemail asks you to call back a number about a "final notice" on your tax account.
• The refund twist: you are owed money, but must first confirm your Social Security number or bank details.

The IRS says it does not leave urgent, threatening prerecorded messages, does not call to demand immediate payment and does not threaten arrest. It also says impersonators refuse to let you question or appeal the amount, which the real agency always allows.

What should I do if I get an IRS scam call?

Hang up, write down the number and the time, and then check your real account through a channel you open yourself. Never call back a number the caller gives you, and never read out your Social Security number, bank login or card details.

1. End the call. You do not need to argue or explain; the IRS's report-phishing page simply says to record the number and hang up.
2. Note the caller ID, the name and "badge number" the caller used, the amount claimed and any payment instructions.
3. Sign in to your IRS Online Account at IRS.gov to see whether you actually have a balance. Our guide on how to check if you owe back taxes explains what the account screen shows.
4. Look through your mail for a real notice. A genuine IRS notice has a CP or LTR number in the top or bottom right corner.
5. Report the call to the Treasury Inspector General for Tax Administration (TIGTA) and, if you lost money, to the Federal Trade Commission at ReportFraud.ftc.gov.
6. If you already paid or shared personal data, see the section below on what to do next.

Can a real IRS collector call me?

Yes, a real IRS collector can call, but only in a case you already know about from the mail. A revenue officer usually sends Letter 725-B or phones to schedule a meeting after earlier notices, and three private agencies (CBE Group, Coast Professional and ConServe) may call about older accounts the IRS assigned to them.

Private collection agencies cannot take payment themselves. The IRS says every payment goes to the Treasury, either on IRS.gov or by check payable to the U.S. Treasury, and that you and the agency confirm each other by exchanging parts of the taxpayer authentication number printed on your CP40. Our page on IRS private debt collection covers that process in detail.

How to verify an IRS employee who calls or visits

Ask for the caller's name, office and a callback reference, then hang up and contact the IRS through the phone number on your notice or on IRS.gov. Revenue officers and revenue agents who visit carry two credentials, a pocket commission and an HSPD-12 card, each with a photo and serial number.

What if I already paid or gave information to an IRS scam caller?

Act the same day. Money sent by gift card, wire or crypto is hard to recover, so the goal is to stop further losses and protect your identity.

• Gift cards: contact the card issuer immediately with the card numbers and receipts and ask whether the funds can be frozen.
• Bank transfer or debit card: call your bank's fraud department using the number on your card and ask for a recall or dispute.
• Social Security number shared: review the identity theft steps at IRS.gov/idtheft and consider a credit freeze with the three credit bureaus.
• Remote access allowed: disconnect the device from the internet and have it checked before you log in to any financial account.
• Report the loss: include the payment details in your reports to TIGTA and the FTC.

None of this changes what you actually owe the IRS. If your real account does show a balance, the safe next step is an official plan; see how to set up an IRS payment plan.

Where do you report IRS scam calls?

Report IRS scam calls to TIGTA, the independent watchdog that investigates IRS impersonation, through the report page at tigta.gov. Report financial losses to the FTC as well.

Letters that look official need a separate check, covered in how to spot an IRS letter scam. The wider list of schemes the IRS is watching this year is in our summary of the Dirty Dozen tax scams, and other sources of real help are in help with IRS problems.