Every year, the IRS sends millions of letters to taxpayers across the country. These letters cover a wide range of topics, from tax refunds and payment reminders to audits and requests for additional information. Receiving a certified letter from the IRS is not always bad news.
Keep reading to learn what your letter might mean and exactly what to do next.
Key Takeaways
- A certified letter isn’t automatically bad news. It can mean a refund adjustment, an identity check, or a balance due.
- Most IRS letters have a response deadline, often 30 or 90 days. Missing it can cost you appeal rights.
- The notice number in the top right corner tells you exactly what the letter is about.
- The IRS never asks for payment by gift card, wire transfer, or cryptocurrency, and doesn’t initiate contact by email or text.
- You can verify any letter by creating an account at IRS.gov and checking “View Notices and Letters.”
What to Do Right Now
If you just opened a certified letter from the IRS, here’s the short version:
- Find the notice number. It’s in the top right corner, formatted like CP14 or Letter 525.
- Check the deadline. It’s usually printed near the top or bottom of the first page.
- Confirm it’s real. Log into your IRS Online Account and check “View Notices and Letters” for a match.
- Respond by the deadline, even if that response is just a phone call or a request for more time. Ignoring it is the one thing that reliably makes things worse.
The sections below cover what the most common notice types mean and how to handle each one.
What Is a Certified Letter from the IRS?
A certified letter from the IRS is an official document sent through the United States Postal Service. The IRS uses certified mail to ensure recipients receive the letter and to track delivery. These letters often deal with urgent tax matters or require a response.
Why Did I Get a Certified Letter from the IRS?
Each letter’s purpose is different, including:
- Unpaid taxes or balances
- Verification of identity or documents
- Notices related to audits or liens
- Refund issues
Is Certified Mail from the IRS Always Bad?
No. While some letters alert you to issues, others provide updates about refunds or request verification of your information. The most important step is to open the letter and read it carefully. Ignoring it can lead to bigger problems, even when the underlying issue is minor.
What Are the Most Common IRS Notices?
Informational (Soft) Notices
To provide information or clarification.
- CP12 (Corrected Return Refund Notice): The IRS corrected a mistake on your return, resulting in a refund or a changed refund amount.
- CP180/CP181 (Missing Form or Schedule): A required form or schedule was missing or incomplete on a business return. If it isn’t provided, a related credit may be disallowed or you may be billed for the difference.
- CP501 (Reminder Notice, Balance Due): A reminder that you have a balance due and need to pay it to avoid penalties.
- CP521 (Installment Agreement Payment Due): Reminds you of a payment due under your installment agreement and the consequences of missing it.
- CP23 (Estimated Tax Discrepancy, Balance Due): Sent when the IRS finds a difference between the estimated tax payments you claimed and what it has on record, resulting in a balance due.
- Letter 4883C (Identity Verification): Sent when the IRS needs you to verify your identity before it will process your return.
- Letter 3164 (Third Party Contact Notice): Informs you that the IRS may contact third parties, such as banks or employers, to gather information about your finances.
Requests and Notices
To request missing payments or documents, or to open a review.
- CP2000 (Notice of Proposed Adjustment): Sent when the IRS finds a discrepancy between your return and third-party information (like a W-2 or 1099), proposing a change to your tax liability.
- Letter 525 (General 30-Day Letter): Informs you of audit results and gives 30 days to respond before the IRS issues a formal assessment.
- Letter 950 (30-Day Letter, Straight Deficiency): Covers a straightforward audit deficiency; gives 30 days to agree or appeal before assessment.
- CP75 (EIC or Refundable Credit Audit): Sent when the IRS is auditing your claim for the Earned Income Credit or another refundable credit and needs supporting documentation.
Urgent Notices
To demand action to avoid further consequences.
- CP14 (Balance Due Notice): Informs you of the amount you owe and provides payment options.
- CP523 (Notice to Terminate Installment Agreement): If you default on your installment agreement, this notice warns the IRS may resume collection.
- CP508C (Certification of Seriously Delinquent Tax Debt): If you owe more than $66,000 in unpaid taxes for 2026 and haven’t arranged payment, the IRS can notify the State Department, which can deny or revoke your passport.
- Letter 3174 (New Warning of Enforcement): A follow-up letter after a Notice of Intent to Levy, warning that collection may proceed.
- Letter 1153 (Proposed Trust Fund Recovery Penalty): Means the IRS believes you’re responsible for unpaid payroll taxes and is proposing a 100% penalty against you personally.
- Letter 3172 (Notice of Federal Tax Lien Filing): The IRS has recorded a public Notice of Federal Tax Lien. $10,000 is the IRS’s internal policy threshold for when it typically files this notice, not a legal minimum, a lien can technically attach at any balance once assessed and unpaid. The IRS doesn’t need to notify you before filing, but often sends this letter afterward.
Audit and Deficiency Notices
To notify about audits, deficiencies, or claim denials, and allow time to respond or appeal.
- CP3219N (Statutory Notice of Deficiency, Substitute Return): The IRS filed a return on your behalf for a year you didn’t file. If you don’t respond within 90 days, you’ll owe the amount shown.
- Letter 531 (Statutory Notice of Deficiency, Office Audit): Details the IRS’s proposed tax assessment following an in-person audit and allows 90 days to respond or petition the U.S. Tax Court.
- Letter 105C (Claim Disallowed): Notifies you that a claim for refund, credit, or relief has been denied, with instructions for appealing.
Final Notices
Final warnings before enforcement action like levies, liens, or garnishments.
- CP504 (Final Notice, Balance Due): Your unpaid tax debt remains unresolved. The IRS may levy your assets, garnish wages, or seize state tax refunds unless you act.
- CP297 (Notice of Intent to Levy and Your Right to a Hearing): Warns that the IRS intends to levy your assets and gives you 30 days to request a Collection Due Process hearing.
- CP297A (Notice of Levy, Federal Payments): Sent after the IRS has already levied certain federal payments, not a warning beforehand.
- CP297C / LT75 (Levy on Federal Payments): The IRS has placed a levy on federal payments, such as government contracts or vendor payments, to satisfy unpaid taxes.
- Letter 1058, CP77, CP90, or LT11 (Final Notice of Intent to Levy): These are the core final-notice-of-intent-to-levy variants, issued by different IRS units for the same legal purpose. They warn that the IRS may seize your assets, freeze your bank account, or garnish your wages if you don’t respond within 30 days.
- CP92 (Levy on State Tax Refund): The IRS has already levied your state tax refund for unpaid federal taxes. Respond promptly to preserve your appeal rights.
- CP91 (Notice of Intent to Levy Social Security Benefits): The IRS plans to levy up to 15% of your Social Security benefits for unpaid taxes unless you respond by the deadline.
- Letter 2439 (Notice of Jeopardy Levy and Right of Appeal): Issued when the IRS believes collection is at risk, for example if you’re about to leave the country or move assets. This allows an immediate levy without the usual 30-day wait, with a limited window to appeal.
These notices are important and often require immediate action.
How Do I Know if a Letter from the IRS Is Legitimate?
Scammers send fake letters to steal personal or financial information. Knowing how to spot a scam can save you from fraud and unnecessary anxiety. Look for these warning signs:
- The IRS never asks for payment through gift cards, prepaid debit cards, or wire transfers.
- Real IRS letters don’t threaten arrest or license revocation.
- The IRS won’t ask for Social Security numbers or bank details by email or phone.
- Missing logos, incorrect grammar, and poor formatting are red flags.
- The IRS doesn’t communicate about tax issues by email.
To Confirm a Letter Is Real
- Check the IRS logo, contact number, and letter number.
- Call the IRS using the number on its official website to verify the letter.
- Create an account at IRS.gov, go to “View Notices and Letters,” and check for a matching notice.
Check a sample certification letter for reference. If you suspect a scam, call 800-829-1040.
Steps to Handle IRS Certified Letters
Following the right steps helps you address the situation with confidence.
Step 1: Open the Letter Promptly
Read it carefully as soon as possible. Delaying your response can lead to penalties or missed deadlines.
Step 2: Identify the Type of Notice
Find the notice number in the top right corner. Compare it against IRS.gov to confirm exactly what the letter covers and what’s being asked of you.
Step 3: Respond by the Deadline
Most IRS letters have a response deadline. Missing it can lead to fines, additional interest, or enforcement action. If needed:
- File an appeal: dispute any errors you believe the IRS made.
- Seek professional help: contact a tax attorney, accountant, or enrolled agent.
Pro tip: save copies of everything you receive from the IRS, including envelopes. If you respond, keep records of what you send and use certified mail to track delivery.
How to Handle Specific IRS Certified Letters
Different certified letters call for different responses:
Refund-Related Letters
If you receive a certified letter about a refund, it may be verifying your identity or addressing a payment issue. Follow the instructions carefully to confirm your information and avoid delays.
Audit Notifications
Gather all required documents, including receipts, bank statements, and tax returns. Respond promptly with accurate information to resolve the issue as quickly as possible.
Payment Demands
Review the notice to understand the balance due. If you can’t pay in full, consider a payment plan or a relief program.
Identity Verification Requests
Follow the steps in the letter exactly. Use the official IRS website or the phone number listed to complete verification securely. Avoid sharing information by email or unverified channels.
Don’t Fear Certified Letters, Take Action
Staying organized reduces the chances of missing an IRS certified letter, and keeping your contact information current with the IRS avoids missed communications. Verify the letter’s legitimacy, respond by the deadline, and get a free consultation with a tax professional if you need help.
Frequently Asked Questions
Not always. It can indicate a refund, an identity check, or a balance issue. Read it and respond by the deadline.
It’s an official communication that typically requires your acknowledgment or action within a set timeframe.
Double-check suspicious mail by visiting IRS.gov or calling the official number. Avoid sharing sensitive information by email or phone unless you’re sure it’s legitimate.
Notice 1462 is sent to taxpayers in a federally declared disaster area, giving them extra time to file and pay their taxes. It isn’t related to return corrections.
Yes, especially for important notices such as audits, tax debts, or identity verification.
The IRS is directing more resources toward high-income taxpayers, large or aggressive deductions, and complex returns. Expats and taxpayers with foreign accounts or cryptocurrency transactions may also see increased scrutiny, partly due to new digital asset reporting requirements taking effect.