Criminals who steal Social Security numbers to file bogus federal tax returns and collect fraudulent refunds now face a simple but effective barrier: a free six-digit Identity Protection PIN issued by the IRS. The agency assigns the code to any taxpayer who can verify their identity, and it must be entered when e-filing, which means a scammer without the PIN cannot submit a return under someone else’s SSN. A new PIN is generated each year, keeping the credential fresh even if prior personal data has been compromised.
How a six-digit code blocks fraudulent tax filings
The FBI issued a cyber alert confirming that criminal actors steal U.S. taxpayer identities to file false returns and claim refunds. That alert also directs victims toward the IRS IP PIN program for recovery. The scheme works because a stolen SSN, paired with basic personal details available from data breaches, is often enough to pass initial filing checks. An IP PIN adds a second verification layer the IRS processes before accepting any return, so a thief who lacks the code gets rejected at the gate.
The hypothesis that IP PIN users experience dramatically lower rates of fraudulent filings is logical but not yet publicly measurable. The IRS has not released account-level incident data comparing fraud rates for PIN holders against non-holders in the same income bracket. Without that dataset, the precise reduction remains unquantified. What the available record does confirm is the mechanical protection: a return filed without the correct PIN will not be accepted, which eliminates the most common path scammers use.
IRS and GAO records supporting the IP PIN program
The IRS defines the IP PIN as a six-digit number assigned to eligible taxpayers to help prevent misuse of their SSNs on fraudulent federal income tax returns. Anyone with a Social Security number or Individual Taxpayer Identification Number who can verify their identity is eligible. Enrollment is free and available through the IRS Online Account portal. Once enrolled, the taxpayer receives a new PIN each calendar year, delivered either through the online system or by mail on the official CP01A notice.
The Government Accountability Office examined the broader authentication challenge in its report titled “Identity Theft: IRS Needs to Strengthen Taxpayer Authentication Efforts,” cataloged as GAO-18-418. That evaluation identified weaknesses in how the IRS verified taxpayer identities and recommended stronger checks. The IP PIN program is one direct response to those findings, though the GAO report dates to 2018 and contains no post-publication data on how well the PIN has performed against evolving fraud techniques.
For taxpayers who have already been targeted, the IRS scam-response page explicitly recommends getting an IP PIN to prevent scammers from filing a return in the victim’s name. That same guidance routes victims to IdentityTheft.gov, the Federal Trade Commission’s centralized portal for reporting identity theft and generating recovery plans. The emphasis on the PIN in official recovery instructions underscores that the IRS treats it as a frontline control, not just an optional add-on.
How to enroll and use the IP PIN
Taxpayers who want this extra protection can apply online through the IRS system dedicated to obtaining an IP PIN. The process requires creating or signing in to an IRS Online Account and passing identity verification checks that may include credit records or one-time codes sent to a trusted device. Those who cannot use the online tool may qualify to apply by mail or in person, depending on IRS criteria in effect for the filing year.
Once issued, the PIN must be entered on any electronic federal income tax return submitted for that taxpayer’s SSN or ITIN. For joint filers, each spouse with a PIN needs to include their own code. If a professional preparer files on the taxpayer’s behalf, the preparer must have the current-year PIN before transmitting the return. Paper filers are instructed to write the PIN in the designated boxes so the IRS can authenticate the filing during processing.
Because a new number is generated annually, taxpayers should store each year’s PIN securely and avoid sharing it by email or text. The IRS will not ask for the code in unsolicited calls or messages, so any such request is a red flag for a scam. If a PIN is lost, the IRS Online Account can display it again for verified users, or a replacement can be requested according to the agency’s published procedures.
A practical layer of defense, not a cure-all
The IP PIN program does not prevent every form of tax-related identity theft. Criminals may still attempt to intercept mailed refunds, claim benefits through other agencies, or exploit stolen data in non-tax schemes. Yet for the specific threat of fraudulent federal income tax returns filed under a stolen SSN, the requirement to supply a valid, annually refreshed PIN substantially raises the barrier to entry.
Until the IRS publishes detailed comparative fraud statistics, the full impact of the program will remain partly inferential. Nonetheless, the combination of clear mechanical safeguards, GAO’s call for stronger authentication, and explicit IRS recommendations to victims all point in the same direction: for most eligible taxpayers, enrolling in an IP PIN is a straightforward, no-cost step that can meaningfully reduce the risk of having a tax return hijacked before they ever sit down to file.
