An IRS agent ID number is a unique serial number assigned to every legitimate IRS employee, and you have the right to ask for it during any phone call, letter, or in-person visit. Getting the number is only half the job. To confirm you’re actually dealing with the IRS and not a scammer, you need to write the number down, hang up or step away, and call the IRS back on a number you already trust to verify that the person and their assignment are real.
What a Real IRS Employee Should Show You
IRS field employees carry two forms of official identification: a pocket commission and an HSPD-12 card (also called a PIV card). Both display the employee’s photograph and their unique serial number. Criminal Investigation special agents also carry an enforcement badge along with a pocket commission containing a special agent insert.
Revenue officers, revenue agents, and fuel inspectors are required to carry both the pocket commission and the HSPD-12 card. You can ask to see both, and a legitimate employee will show them without argument. If they can’t, end the conversation.
The serial number on the credentials is what you need to write down. It’s specific to that employee and links back to their employment record and current assignment. It is not the same as any reference code on your tax notice, your Taxpayer Identification Number, or an Employer Identification Number.
In written correspondence, letters and notices prepared by an individual employee must include a contact name, telephone number, and unique employee ID number in the contact block. Fully automated notices, like system-generated balance reminders, may not carry individual employee details, but any letter written by a specific person handling your case will.
On the phone, ask for the caller’s full name and employee ID number before you discuss anything else. Write both down carefully.
How to Verify the ID Number
Getting the number is step one. Confirming it is step two, and this is the part scammers count on you skipping.
The rule is simple: you initiate the callback, using a number you already trust. Never dial a number a suspicious caller gave you.
- If someone visited in person and showed credentials, call the phone number printed on the card itself to confirm the employee’s identity.
- If the contact came by letter, call the number printed on the letter.
- If the contact was an unsolicited phone call and you have no official documentation to reference, hang up and call the main IRS individual line at 800-829-1040. Tell the representative you need to verify the identity of someone who contacted you, and give them the name and ID number you were given.
Your IRS online account at IRS.gov is a useful second check. Under the Records and Status tab, you can see whether you actually have an open audit, an outstanding balance, or other account activity. If a caller claims you’re under audit and your online account shows nothing, treat that as a strong sign the contact was fraudulent.
If the IRS can’t confirm the person’s employment or assignment, or the person refused to provide credentials in the first place, stop the interaction. Don’t send documents, don’t send payment, don’t answer identifying questions.
Signs You’re Being Scammed Before You Even Verify
Scammers impersonating the IRS follow patterns that real employees never use. The IRS typically reaches out by mail first, so an unexpected call or visit is already worth extra scrutiny.
The IRS will not demand immediate payment over the phone, threaten arrest or deportation, ask you to pay with gift cards, prepaid debit cards, or wire transfers, or leave threatening prerecorded voicemails. Outside narrow exceptions like criminal investigations, the IRS does not initiate contact by email or text.
One change worth knowing: the IRS ended most unannounced revenue officer visits in 2023. Revenue officers now send an appointment letter (Letter 725-B) or call ahead to schedule. Unannounced visits still happen in limited situations, mainly to serve a legal summons or seize assets at risk of being hidden. If someone knocks on your door with no prior letter, your suspicion should already be high.
The biggest tell is urgency. Anyone pressuring you to act before you can verify credentials or talk to a tax professional is not who they claim to be. A real agent handling a real matter will give you the time.
Who Might Actually Be Contacting You
Every IRS employee has an ID number, but their roles and authority differ, and knowing which type of employee is reaching out tells you what stage your situation is at.
- Revenue agents conduct audits, either in the field or at IRS offices. Contact from a revenue agent means the IRS is examining your return.
- Revenue officers work in collections. They can issue levies, garnish wages, and file federal tax liens. Contact from a revenue officer means there’s an unresolved tax debt.
- Criminal Investigation special agents are law enforcement officers who investigate tax crimes like fraud and evasion. They may visit or call unannounced as part of an active investigation. This is the most serious type of IRS contact.
- Tax examiners and customer service representatives handle general inquiries and routine correspondence from centralized offices. They carry a standard employee ID but don’t have the enforcement authority of revenue officers or agents.
Reporting an Impersonator
If you believe someone impersonated an IRS employee, report it whether or not you fell for it. The reports help shut down active fraud operations.
- For phone scams, call the Treasury Inspector General for Tax Administration (TIGTA) hotline at 800-366-4484, or file a complaint at tigta.gov.
- For email or text scams, forward the message to phishing@irs.gov. Use the subject line “IRS” for emails, “Text” for text messages, or “Social media” for fake social media accounts.
If You Already Shared Information
If you gave out your Social Security number, bank account information, or tax data before you realized the contact was fake, move quickly. Report the incident to TIGTA and to the FTC; the IRS points identity theft victims to Federal Trade Commission guidance. Check with your state tax agency too, since state-level identity theft can happen alongside federal.
Then get an Identity Protection PIN from the IRS. The IP PIN is a six-digit number that blocks anyone else from filing a return with your Social Security number. The fastest way to get one is through your IRS online account. If you can’t set up an online account, you can file Form 15227 by mail if your adjusted gross income is below $84,000 for individuals or $168,000 for married filing jointly, or schedule an in-person appointment at a Taxpayer Assistance Center. If the IRS has already confirmed you as a victim of tax-related identity theft, a new IP PIN will be mailed to you each year automatically.