A fake IRS letter usually gives itself away in three places: it threatens you, it demands an odd form of payment, and it skips the notice code that every real IRS letter carries in the upper right corner. If the letter in your hand fits that pattern, you can confirm it in a few minutes by logging into your IRS online account or looking up the notice code on irs.gov. The IRS’s 2026 Dirty Dozen list flags mail, email, and text impersonation as an active threat, so the caution is warranted.1Internal Revenue Service. Dirty Dozen Tax Scams for 2026
Red Flags to Check First
Threats and Short Deadlines
Scam letters run on panic. They threaten arrest, asset seizure, license suspension, or deportation unless you pay within a few days. Real IRS notices don’t work that way. When you actually owe tax, the IRS bills you by mail and gives you time to respond, typically 30 or 90 days depending on the notice.2Taxpayer Advocate Service. 90-Day Notice of Deficiency A letter demanding immediate payment with no mention of your right to dispute the amount is almost certainly fake.
Strange Payment Methods
The clearest tell is how the letter tells you to pay. The IRS will never ask you to buy gift cards, send cryptocurrency, or load money onto prepaid debit cards.3Internal Revenue Service. Holiday Scam Reminder: Gift Cards Are Never Used to Make Tax Payments Scammers prefer those methods because the transactions are nearly impossible to reverse. Real payments go through irs.gov, your bank, a check made out to the U.S. Treasury, or an authorized payment processor.
Made-Up Agency Names
Some fakes come from agencies that don’t exist. “Bureau of Tax Enforcement” and “Tax Processing Unit” sound plausible but aren’t real federal bodies.4Internal Revenue Service. Taxpayers Should Beware of Property Lien Scam Legitimate correspondence about federal taxes comes from the Internal Revenue Service. If the letterhead says anything else, the letter is fake.
Sloppy Formatting
Blurry or stretched logos, mixed fonts, misspellings, and layouts that look off are all warning signs. Scammers copy IRS branding from the web and the quality suffers. Some fakes look nearly perfect, though, so a clean-looking letter isn’t proof of anything on its own.
How to Verify the Letter
Check the Notice Code
Every real IRS notice has an identifying code in the upper right corner, starting with “CP” or “LTR” followed by a number. Look that code up on the IRS page titled “Understanding Your IRS Notice or Letter” to confirm it matches a real notice type.5Internal Revenue Service. Understanding Your IRS Notice or Letter If the code isn’t in the database, or the letter has no code at all, treat it as fake. When in doubt, call the IRS at 800-829-1040.
Log Into Your IRS Online Account
Your account at irs.gov shows your current balance, past payments, and digital copies of the notices the IRS has actually sent you.6Internal Revenue Service. Online Account for Individuals If the letter says you owe money but your account shows a zero balance and no matching notice, the letter is fake. Setup requires identity verification with a photo ID, and once it’s active it’s the fastest way to cross-check anything suspicious.
If Someone Shows Up in Person
IRS revenue officers do occasionally make unannounced visits, but they carry two forms of official identification: a pocket commission and an HSPD-12 card, each with a photo and serial number.7Taxpayer Advocate Service. How to Confirm the Identity of a Field Revenue Officer If They Come Knocking at Your Door The officer should give you a phone number you can call to confirm identity. Anyone who refuses to show credentials or presses you to pay on the spot is not a real IRS employee.
How the IRS Actually Makes First Contact
The IRS always starts with a letter in the mail. It does not open a tax matter with an email, text, social media message, or phone call.8Internal Revenue Service. Ways to Tell if the IRS Is Reaching Out or if It’s a Scammer An unexpected text or email claiming to be from the IRS is a scam on that basis alone. The IRS only sends texts or emails to people who have specifically opted in.9Internal Revenue Service. Report Fake IRS, Treasury or Tax-Related Emails and Messages
Scammers also spoof caller ID so calls appear to come from IRS numbers.10Federal Communications Commission. This Tax Season, Don’t Fall for Spoofed IRS Calls If you get a threatening call about unpaid taxes without any prior letter, hang up. The IRS may call to confirm a scheduled appointment or discuss an ongoing audit, but it never leaves pre-recorded urgent messages or demands immediate payment over the phone.8Internal Revenue Service. Ways to Tell if the IRS Is Reaching Out or if It’s a Scammer
What a Real Notice Tells You About Your Rights
Real notices don’t just say what you owe. They explain how to push back. If the IRS thinks you owe more than what you reported, it sends a statutory notice of deficiency, the “90-day letter,” which gives you 90 days to file a petition in U.S. Tax Court before paying anything.2Taxpayer Advocate Service. 90-Day Notice of Deficiency The window is 150 days if your address is outside the United States. Other notices include instructions for requesting an appeal or filing a written protest, usually within 30 days, and information on contacting the Taxpayer Advocate Service.11Taxpayer Advocate Service. Taxpayer Bill of Rights A letter that skips all of that and goes straight to “pay now or else” is designed to strip out the procedural steps that would give you time to think.
The One Real Exception: Private Debt Collectors
The IRS does use private companies to collect certain overdue tax debts, which is where scammers find cover. Only three agencies are authorized: CBE Group, Coast Professional, and ConServe.12Internal Revenue Service. Private Debt Collection Any other company claiming to collect an IRS debt is not legitimate.
Before a private collector reaches out, the IRS mails you a CP40 notice with the name of the assigned agency and a Taxpayer Authentication number you’ll use to verify the collector’s identity.13Internal Revenue Service. Understanding Your CP40 Notice The collector then sends its own letter confirming the assignment. If someone calls about a tax debt and you never received a CP40, don’t engage.
Even authorized collectors have limits. They cannot request payment by gift card or prepaid debit card, take enforcement actions like issuing a levy, or charge fees for setting up a payment plan.14Internal Revenue Service. Private Debt Collection Frequently Asked Questions Anyone doing those things is either unauthorized or breaking the rules.
How to Report a Fake IRS Letter
For a physical letter, report it to the Treasury Inspector General for Tax Administration, which investigates IRS impersonation.15U.S. Department of the Treasury. Report Scam Attempts You can file online at the TIGTA website or call 1-800-366-4484.16U.S. Treasury Inspector General for Tax Administration OIG. Submit a Complaint Also report the mail to the U.S. Postal Service and the Federal Trade Commission.9Internal Revenue Service. Report Fake IRS, Treasury or Tax-Related Emails and Messages
For scam emails, texts, or social media messages, forward them to phishing@irs.gov. Include the full email header if you can. Don’t click links or open attachments before forwarding.
Keep the letter and the envelope. Postmarks and barcodes help investigators trace where the mail came from.
If You Already Paid or Shared Personal Information
If you sent money, try to reverse the transaction as quickly as you can. The steps depend on how you paid:
- Credit or debit card: contact your bank or card issuer, explain the charge was fraudulent, and request a chargeback.
- Gift card: call the company that issued the card with the card number and receipt, and ask for a refund. Keep the physical card.
- Wire transfer: contact the wire transfer company (MoneyGram at 1-800-926-9400, Western Union at 1-800-448-1492) or your bank if you sent it directly, and request a reversal.
- Cryptocurrency: contact the platform you used, though crypto payments are rarely reversible.
- Cash by mail: call the U.S. Postal Inspection Service at 877-876-2455 and ask them to intercept the package.
Recovery odds vary. Credit card chargebacks have the highest success rate; gift card and crypto recoveries are rare but still worth attempting.17FTC. What To Do if You Were Scammed
If you shared your Social Security number, address, or other personal information, act on three fronts:
- File Form 14039, the Identity Theft Affidavit, with the IRS. The fastest route is online through irs.gov. You can also fax it to 855-807-5720 or mail it to the IRS in Fresno, CA.18Internal Revenue Service. Identity Theft Affidavit
- Place a fraud alert with any one of the three major credit bureaus (Equifax, Experian, or TransUnion). That bureau is legally required to notify the other two. The alert is free and lasts one year.19Consumer Advice – FTC. Credit Freezes and Fraud Alerts
- Consider a credit freeze, which blocks new accounts from being opened in your name entirely. It’s free and stays in place until you lift it.
If you file an FTC identity theft report or a police report, you qualify for an extended fraud alert lasting seven years instead of one.19Consumer Advice – FTC. Credit Freezes and Fraud Alerts
Get an IP PIN Before Next Filing Season
The IRS offers an Identity Protection PIN to anyone with a Social Security number or ITIN. It’s a six-digit number that changes each year and must appear on your federal return. If someone tries to file a fraudulent return in your name without your IP PIN, the IRS rejects it automatically.20Internal Revenue Service. FAQs About the Identity Protection Personal Identification Number (IP PIN) You enroll through your IRS online account. If you can’t verify your identity online and your income is below $84,000 (or $168,000 for married filing jointly), you can apply using Form 15227.
Checking your IRS online account periodically, especially during tax season, catches problems early. If an unexpected notice appears there, you can act on it before it grows. The Taxpayer Advocate Service (877-777-4778) can help if an issue is stuck or you believe your identity was compromised and normal IRS channels aren’t moving.21Internal Revenue Service. What Is the Taxpayer Advocate Service and How Do I Contact Them