An IRS letter typically arrives in a standard white envelope, with a return address from the "Internal Revenue Service" or "Department of the Treasury". Key features include official, professional printing, the IRS logo or seal, and often a, "Official Business, Penalty for Private Use" marking. They are sent via official mail, sometimes with tracking barcodes.
Look for the official IRS logo and letterhead, including the correct address and phone number. Dates should be recent, accurate, and accurately formatted (month spelled out), and they should include official IRS security or file numbers you can refer to for more information. A fake letter won't have this information.
Here's what the IRS says: Paper checks will arrive by mail in a white envelope from the U.S. Department of the Treasury. For those taxpayers who received their tax refund by mail, this paper check will look similar, but will be labeled as an “Economic Impact Payment” in the memo field.
To tell if an IRS letter is real, check for typos and poor grammar, verify it contains specific personal info (like the last 4 of your SSN), look for an official notice number (CP or LTR) and logo, and ensure it doesn't demand immediate payment via gift cards or threaten arrest, as scammers do. If in doubt, log into your secure IRS Online Account or call an official IRS phone number (not one from the letter) to verify.
The audit notice will usually come in a plain white envelope with a clear insert to show your name and address. The audit notice will not have a postage stamp on it. It will have a postage meter stamp on it or have no postage at all. These are clues that the notice is actually from the IRS.
The IRS performs audits by mail or in person. The notice you receive will have specific information about why your return is being examined, what documents if any they need from you, and how you should proceed.
To tell if an IRS letter is real, check for typos and poor grammar, verify it contains specific personal info (like the last 4 of your SSN), look for an official notice number (CP or LTR) and logo, and ensure it doesn't demand immediate payment via gift cards or threaten arrest, as scammers do. If in doubt, log into your secure IRS Online Account or call an official IRS phone number (not one from the letter) to verify.
When an IRS letter or notice arrives in the mail, here's what taxpayers should do:
The IRS audit envelope will arrive via certified mail and list your full name, taxpayer ID or social security number, the form number, and the Information they are reviewing. It will also provide the IRS agent's contact information for more information or questions on the process or specific case.
The IRS mails letters or notices to taxpayers for a variety of reasons including:
If you receive an IRS notice or letter
We may send you a notice or letter if: You have a balance due. Your refund has changed. We have a question about your return.
The biggest tax mistakes people make include filing late, math errors, incorrect personal info (like Social Security numbers), forgetting deductions/credits (like EITC), misreporting income, not signing forms, and making errors with bank details for direct deposit, all leading to delays, penalties, or missed savings, with using tax software or professionals helping avoid these common pitfalls.
It may be about a specific issue on your federal tax return or account, or may tell you about changes to your account, ask you for more information, or request a payment. You can handle most of this correspondence without calling or visiting an IRS office if you follow the instructions in the document.
You can find digital copies of most IRS notices in your online account, under the 'Notices and Letters' section.
What happens if you ignore it: After the deadline passes, the IRS can levy bank accounts, garnish wages, and seize property without further notice. You lose critical appeal rights that would have stopped these actions.
A genuine HMRC letter will always include your unique taxpayer reference (UTR) or tax reference number. Look out for spelling mistakes, grammatical errors, or issues with the HMRC logo or letterhead; genuine letters are professional and free of such flaws.
To tell if an IRS letter is real, check for typos and poor grammar, verify it contains specific personal info (like the last 4 of your SSN), look for an official notice number (CP or LTR) and logo, and ensure it doesn't demand immediate payment via gift cards or threaten arrest, as scammers do. If in doubt, log into your secure IRS Online Account or call an official IRS phone number (not one from the letter) to verify.
Unreported income
The IRS receives copies of your W-2s and 1099s, and their systems automatically compare this data to the amounts you report on your tax return. A discrepancy, such as a 1099 that isn't reported on your return, could trigger further review.
Most IRS letters are called “notices,” and they always contain the IRS logo. You may receive multiple letters or notices for the same issue. The letter should clearly explain the reason for contacting you and what you may need to do in response. Letters always include your rights as a taxpayer.
You know the IRS might be investigating you through official mail (first contact), phone calls (often with automated messages to IRS.gov), or in-person visits, but signs of a criminal probe include contact with IRS Criminal Investigation (CI) agents, subpoenas to you or your bank, questions to your accountant/bank, unusual account activity (freezing/refusing transactions), or agents suddenly going silent after an audit. Key indicators are official IRS letters, contact from CI special agents, third-party inquiries, and formal summonses for records, signaling serious scrutiny beyond a simple audit.
Don't reply unless instructed to do so.
There is usually no need for a taxpayer to reply to a notice unless specifically instructed to do so. On the other hand, taxpayers who owe should reply with a payment. IRS.gov has information about payment options.
What If You Ignore an IRS Notice? The IRS will continue its collection actions, charge penalties and interest, and even seize your assets if you ignore notices about an unpaid balance or unfiled return. Some notices may be informational, but you should still read them carefully.
A notice may reference changes to a taxpayer's account, taxes owed, a payment request or a specific issue on a tax return. Taking prompt action could minimize additional interest and penalty charges.
Yes, the IRS can send an audit letter by regular mail. The IRS typically sends audit notices and requests for information via certified mail to ensure delivery and create a paper trail, but they may also use regular mail in some cases.
If the IRS suspects that a tax return with your name on it is potentially the result of identity theft, the agency will send you a special letter, called a 5071C Letter. This letter is to notify you that the agency received a tax return with your name and Social Security number that it believes may not be yours.