Idaho State Tax Commission

New scam email impersonating IRS tries to steal tax pros’ EFINs

As tax season ramps up, the IRS is warning of a new scam involving emails that look like they’re from the agency but aim to steal Electronic Filing Identification Numbers (EFINs) from tax professionals. Tax pros are big targets because thieves can use their EFINs to file multiple fraudulent income tax returns for refunds.

According to the IRS, the phishing email says it’s from “IRS Tax E-Filing” and has a subject line of “Verifying your EFIN before e-filing.” The official-looking message urges tax pros to send copies of their EFIN and driver’s license information to verify it in the system. 

If you’re a tax pro, don’t respond. Instead, report the scam in both of these ways:

  • Save the email as a file and send it to the IRS at
  • Contact the Treasury Inspector General for Tax Administration. Go to and click IRS Impersonation Scam Reporting in the column on the far right. 


Other scams tax pros like you should watch for include:

  • Thieves who pose as potential clients and interact with you through email. They eventually send you an attachment, saying it’s their tax information. It’s really malware that steals your passwords or takes over your computer system. 
  • Phishing emails that deploy a ransomware attack. In this attack, thieves hold your data hostage and demand a ransom. The FBI warns not to pay because the thieves often leave your data encrypted, which means you won’t be able to use it even if you do get it back.

Posted 02-18-2021
tax pros

This information is for general guidance only. Tax laws are complex and change regularly. We can't cover every circumstance in our guides. This guidance may not apply to your situation. Please contact us with any questions. We work to provide current and accurate information. But some information could have technical inaccuracies or typographical errors. If there's a conflict between current tax law and this information, current tax law will govern.