Few things cause as much anxiety as finding an envelope from the IRS in your mailbox. But most IRS notices are routine — and many require little more than a careful read and a timely response. Here's how to handle them.
First: Don't Ignore It
Whatever the notice says, ignoring it will make the situation worse. The IRS sends follow-up letters with escalating consequences — including liens, levies, and collection actions — if you don't respond.
Read the letter completely. The notice number (found in the upper right corner) tells you exactly what kind of letter it is.
Common IRS Notices and What They Mean
CP14 — Balance Due
What it means: The IRS believes you owe taxes, penalties, or interest from a prior return. What to do: Verify the balance by comparing it to your return. If correct, pay by the due date shown. If you disagree, contact the IRS or your preparer.
CP2000 — Proposed Changes to Your Return
What it means: The IRS received income information (W-2s, 1099s) that doesn't match what you reported. They're proposing additional tax. What to do: Compare the IRS's proposed income figures to your own records. If you agree, sign and return the response form with payment. If you disagree, respond with documentation explaining the discrepancy. Do not just ignore it or automatically agree — many CP2000s contain errors or involve income that was already reported differently.
CP501, CP503, CP504 — Reminder Notices for Balance Due
What it means: These are escalating collection notices. CP504 is serious — it notifies you that the IRS intends to levy assets. What to do: Respond immediately. If you can't pay, contact the IRS to discuss installment agreements or other options before enforcement action begins.
CP301 — Identity Verification
What it means: The IRS needs to verify your identity before processing your return. What to do: Follow the instructions in the letter to verify online or by calling the IRS. Acting quickly prevents delays to your refund.
Letter 525 / 531 — Examination Changes
What it means: The IRS has completed or proposed changes to your return during an audit. What to do: Review the proposed changes carefully. You have the right to agree, disagree, or request an appeals conference. Do not respond without reviewing each change.
Letter 2645C — Processing Delay
What it means: The IRS received your response or return and needs more time to process it. What to do: Wait for the processing to complete. No immediate action required.
What to Do When You Disagree
If you receive a notice proposing changes you believe are incorrect:
- Gather documentation — W-2s, 1099s, receipts, bank statements, prior-year returns
- Write a clear response explaining your position with supporting documents
- Respond by the deadline shown on the notice — usually 30 to 60 days
- Keep a copy of everything you send
Never send original documents — send copies. Send your response via certified mail so you have a delivery record.
Response Deadlines Matter
The IRS sets specific response deadlines on each notice. Missing a deadline can forfeit your right to dispute the findings. Even if you need more time, call the IRS before the deadline to request an extension.
When to Get Professional Help
You should involve a tax professional if:
- The notice proposes a significant balance you disagree with
- The letter indicates a formal audit is beginning
- You receive a CP504 or notice of intent to levy
- You receive a notice about a year several years back and are unsure of your records
- The notice references fraud, penalty abatement, or criminal investigation
Scam Awareness
The IRS never initiates contact by phone, email, or text. All legitimate IRS communication starts with a letter by mail. If you receive a phone call claiming to be from the IRS demanding immediate payment — it is a scam. Hang up.
The Bottom Line
Receiving an IRS notice is stressful but manageable. Read it carefully, respond on time, and seek help when the stakes are high or the issue is complex. Most notices are resolved without drama when handled promptly.