Does the Illinois Department of Revenue Call You? Scam or Legit?

Yes, the Illinois Department of Revenue does sometimes call taxpayers, but only in narrow situations and only after it has already sent written notices about your account. If you’re wondering whether the Illinois Department of Revenue would call you out of the blue, the answer is almost always no. IDOR handles nearly all official contact through U.S. mail and its secure MyTax Illinois portal, so an unexpected phone call demanding payment or personal information is a strong signal that you’re talking to a scammer.

How IDOR Actually Reaches Taxpayers

Official IDOR notices arrive one of two ways: a physical letter mailed to the address on your most recent return, or a message in the Alerts tab of your MyTax Illinois account.¹ A balance due, an audit, an identity verification request, or a correction to your return will show up in one of those two places first. Always.

IDOR does not use text messages, email, or social media to ask for sensitive information.¹ A text saying you owe Illinois taxes, or an email with a link asking you to “verify your account,” is fraudulent no matter how official the logo looks. Don’t click, don’t reply.

When a Call From IDOR Can Be Real

There are limited situations where an actual IDOR employee may call. A collections officer might follow up on an existing payment plan. An auditor might call to clarify a line item on a return already under review. In every legitimate case, the caller already knows details about your account, such as a Letter ID number or the specific tax period being examined, because you were already sent written notice about the issue.¹

A real IDOR employee will not call to demand immediate payment for a debt you’ve never heard about in writing.

Private Collection Agencies

If IDOR has been unable to reach you through letters, calls, or emails about an unpaid balance, it may refer your account to one of its authorized private collection agencies. As of 2026, those agencies are Harris & Harris, Harvard Collection Services, Transworld System Inc., Linebarger Goggan Blair & Sampson, and Alliance One. If someone calls claiming to represent one of them, you can verify the debt by logging into MyTax Illinois or calling IDOR directly. IDOR also has to notify you of what you owe at least 10 days before it seizes property, levies wages, or takes other assets.²

Red Flags of a Fake IDOR Call

Scam callers rely on urgency and fear. These are the signs that the person on the line is not from the state:

They demand you pay right now or face arrest, deportation, or license revocation. Real tax enforcement is a civil process with written notices and time to respond.
They ask for wire transfers, prepaid debit cards, retail gift cards, or cryptocurrency. IDOR accepts payment through MyTax Illinois, credit cards, and checks or money orders mailed to the department. A request for gift cards is fraud, full stop.³
They threaten that police are on the way. Illinois tax collection does not work that way.
They want your full credit card number or bank login over the phone. IDOR employees don’t ask for that during an unsolicited call.
You never received a letter about the supposed debt. If there’s nothing in your mailbox and nothing in your MyTax Illinois Alerts tab, the “debt” is invented.

One more thing worth knowing: scammers spoof caller ID. Your phone can display “Illinois Department of Revenue” or a Springfield area code and the call can still be fake. What shows up on the screen proves nothing.

How to Verify Before You Say Anything

If someone calls claiming to be from IDOR, don’t share any personal or financial information on that call. Do this instead:

Ask for the caller’s full name, employee ID number, and a direct callback extension.
Hang up. It doesn’t matter what they say.
Call IDOR yourself at 1-800-732-8866 or 217-782-3336, Monday through Friday, 8 a.m. to 5 p.m. Give the representative the details you collected and ask whether anyone from the department tried to reach you.⁴
Log into MyTax Illinois and check the Alerts tab. A real issue will be waiting there.

Five minutes of verification is worth more than any assurance a stranger can give you over the phone.

How to Tell a Real IDOR Letter From a Fake One

Because legitimate contact almost always starts with a letter, knowing what a real one looks like helps too. Every official IDOR notice carries a letter code identifying the type of notice, such as IDOR-1-RCN for a Return Correction Notice or IDOR-2-BILL for a Notice of Tax Due. You can look up any code on the IDOR website to confirm it’s genuine.⁵ A real notice also explains why you received it, what you can do about it, and a phone number to call for help.⁶ A letter missing those pieces, or one pointing you to an unfamiliar website or phone number, deserves the same skepticism as a suspicious call.

What to Do If You Already Gave Information

If you shared your Social Security number, bank details, or other sensitive data before realizing the call was a scam, move quickly.

Report to IDOR

Send IDOR a copy of your driver’s license, copies of any federal and Illinois returns you filed for the affected period, and a completed federal Form 14039 (Identity Theft Affidavit). Email the documents to Rev.IdentityTheftAffidavit@Illinois.gov or mail them to the IDOR ID Theft/Fraud Unit, PO Box 19049, Springfield, IL 62794-9049.⁷ Questions can go to 1-800-732-8866.⁴

Report to the IRS

Submit IRS Form 14039 online at irs.gov, by fax to 855-807-5720 with a cover sheet marked “Confidential,” or by mail to the Department of the Treasury, Internal Revenue Service, Fresno, CA 93888-0025.⁸ This blocks someone from filing a fraudulent federal return in your name.

Place a Fraud Alert on Your Credit

Contact any one of the three major credit bureaus (Equifax, Experian, or TransUnion) and request an initial fraud alert. The bureau you contact must notify the other two. An initial alert is free, lasts one year, and tells lenders to verify your identity before opening new accounts. If you’ve already been victimized, you can file an identity theft report at IdentityTheft.gov or with police and request an extended alert lasting seven years.⁹

Where to Report a Scam Call

Even if you didn’t lose money, reporting the call helps investigators track patterns and warn other taxpayers.

File a consumer fraud complaint with the Illinois Attorney General’s Consumer Protection Division.¹⁰
If the caller claimed to be from the IRS rather than IDOR, report to the Treasury Inspector General for Tax Administration at 800-366-4484 or through the IRS Impersonation Scam Reporting form.¹¹
Report the incident at IdentityTheft.gov, where you can also build a personalized recovery plan if your information was exposed.¹²

Impersonating a government employee is a criminal offense in Illinois. The basic false personation offense is a Class A misdemeanor, with harsher penalties when the impersonation is carried out for identity theft or in connection with another felony.¹³ Scammers who steal money or financial data during these calls can face separate theft and fraud charges on top of that.

1
Illinois Department of Revenue. IDOR Alert: Beware of New Text Message Scam Targeting Taxpayers
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Illinois Department of Revenue. Collection Process
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Illinois Department of Revenue. Payment Options for Individuals
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Illinois Department of Revenue. Contact Us
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Illinois Department of Revenue. Letters and Notices for Individual Income Tax
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Illinois Department of Revenue. What Are My Rights
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Illinois Department of Revenue. Report Identity Theft
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Internal Revenue Service. Identity Theft Affidavit (Form 14039)
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Federal Trade Commission. Credit Freezes and Fraud Alerts
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Office of the Illinois Attorney General. Consumer Fraud Complaint
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Internal Revenue Service. Taxpayers Beware: Tax Season Is Prime Time for Phone Scams
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Federal Trade Commission. IdentityTheft.gov
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Illinois General Assembly. Illinois Code 720 ILCS 5/17-2 – False Personation, Solicitation