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Reply to an IRS notice by certified mail

Tax notices list a response date and an address. Replying by Certified Mail gives you a dated tracking record and proof the agency received it, without a trip to the post office.

Sendpaper guide2 min readUpdated October 2026

How it works

01Draft the reply

Explain your position briefly and reference the notice number. Your agent can draft it from the notice, or upload a PDF you've prepared.

02Use the notice's address

Mail it to the address printed on the notice. Responses often go to a different address than the one you file returns to.

03Send it certified

Choose Certified ($14.99) or add a return receipt ($19.99). Keep the tracking number with your tax records.

Ready to send?Certified letter from $14.99, printing and postage included.

What to include

  • The notice number and tax year (usually at the top of the notice)
  • Your name and taxpayer ID as shown on the notice
  • A short explanation of why you agree or disagree
  • Copies of supporting documents, combined into one PDF with your letter
  • The response form from the notice, if it came with one

Ask your agent

With Sendpaper connected to Codex, Muse or Claude, paste this and fill in the brackets:

I got IRS notice [CP2000] for tax year [2025]. Draft a short response citing the notice number and explaining [what happened], and mail it certified with a return receipt to the address on the notice.

Common questions

Why send it certified?

Certified Mail gives you a tracking number and proof of when it was mailed and delivered, which is useful if there's ever a question about whether you responded on time.

Can I include documents?

Yes. Combine your reply and copies of your documents into one PDF (up to 6 pages) and upload it. Send copies, never originals.

Which address do I use?

Use the address printed on the notice. If you're unsure, check the notice or the agency's website.

Do you give tax advice?

No. We print and mail what you or your agent writes. For advice on your situation, talk to a tax professional.

Sendpaper prints and mails what you or your agent writes. We're not a law firm or tax preparer and don't give legal or tax advice; for deadlines and the right address, check the notice itself, the agency, or a professional.