Updated 6 min readBy the Elite B Taxes team
Quick answer
Don't ignore it and don't panic. Find the notice number in the top or bottom right corner, read what the IRS is asking for, and note the response date. Compare it with your return, then pay, agree, or respond in writing with documents before the deadline. Many notices are resolved with a single clear reply.
Key points
- The IRS contacts you first by mail — not by email, text or social media.
- Every notice has a number (for example CP2000) that tells you what it's about.
- Responding by the deadline keeps your appeal rights and limits interest.
- If you disagree, explain why in writing and include supporting documents.
Is this IRS notice real?
Genuine IRS notices arrive by U.S. mail, include a notice number and your tax year, and never ask you to pay with gift cards or crypto. If you're unsure, compare it with your IRS online account or call the IRS using the number on IRS.gov — not the number in a suspicious message.
What are the most common IRS notices?
A few you're likely to see:
- CP2000 — income reported to the IRS doesn't match your return; proposes changes
- CP14 — you have a balance due
- CP501 / CP503 — reminders that a balance is still unpaid
- CP12 — the IRS corrected a mistake and your refund or balance changed
- Letter 5071C — the IRS needs to verify your identity
How do I respond to a CP2000?
Check each item against your records. If the IRS is right, sign and return the response form and arrange payment. If it's wrong or incomplete — for example, they counted stock sale proceeds without your cost basis — send a written explanation with documents by the response date.
What if I can't pay the full amount?
The IRS offers payment plans and, in some cases, penalty relief. Requesting a plan early is better than missing the deadline.
When should I get professional help?
Get help if the amount is large, you disagree with the IRS, several years are involved, or the letter mentions an audit, levy or lien. A representative can talk to the IRS for you.
This guide is general information, not tax or legal advice for your situation. Tax rules change — talk to a professional before acting.