Tax mail

Reply to an IRS notice online

When the IRS sends a notice (CP series, LTR series, or other), you typically have 30-60 days to respond in writing. Type or upload your response, attach supporting documents, and we print and mail it through USPS within 24 hours.

Reply to the IRSSee pricing
From $5 per letterMailed via USPSShipped within 24 hoursNo printer needed

How it works

Four steps. Most letters take under two minutes from sign-in to mailed.

  1. 1

    Type or upload your response

    Reference the notice number and tax year from the IRS notice you received. Address each item raised in the notice.

  2. 2

    Attach supporting documents

    W-2s, 1099s, receipts, bank statements — up to five attachments per letter.

  3. 3

    Use the IRS address from the notice

    Each IRS notice prints a specific reply address. Use that exact address — different notices route to different IRS service centers.

  4. 4

    We mail within 24 hours

    You receive a dated email confirmation. The PDF copy is kept on your order page.

Who this is for

  • Individuals replying to a CP2000, CP14, CP501, or similar IRS notice
  • Self-employed taxpayers responding to Schedule C reviews
  • Identity theft victims responding to IRS Letter 4883C or 5071C
  • Anyone who has received an IRS notice and needs to respond by paper

Common use cases

CP2000 underreporter responses

Respond to a CP2000 notice agreeing or disagreeing with proposed changes, with supporting 1099s, W-2s, or correction worksheets.

CP14 / CP501 balance due responses

Respond to a balance due notice with payment, an installment agreement request, or a written dispute.

Identity verification

Respond to IRS Letter 4883C, 5071C, or 6330C identity verification requests by mail when phone verification is not possible.

Audit and examination responses

Respond to an examination notice (Letter 566, 525, etc.) with the requested records and a written explanation.

What you can rely on

PostPal is operated as a utility, not a marketing channel. We do one thing: print and mail your documents through USPS.

Domestic
$5
2-5 business days
International
$10
7-14 business days
  • Mailed via USPS within 24 hours
  • Up to 100 pages per letter for large bundles of records
  • Dated email receipt to track response timelines
  • Files deleted after mailing

Frequently asked questions

What address should I send my reply to?

Use the exact address printed on the IRS notice you received. IRS notices route to specific service centers based on the notice type and your state of residence — sending to the wrong address can delay or misroute your reply.

Do I need to include the IRS notice number?

Yes. Always include the IRS notice number (e.g. CP2000), the tax year, and your taxpayer identification number at the top of your response. Without these, the IRS cannot match your reply to the file.

Should I send by Certified Mail with Return Receipt?

For high-stakes responses (audits, large balance due notices, deadline-sensitive replies, identity theft replies), Certified Mail with Return Receipt provides proof of timely receipt. The IRS recognizes Certified Mail postmarks as the date of filing for many response deadlines. PostPal mails standard First-Class Mail; for Certified Mail, contact us before paying.

How long do I have to respond?

IRS notices print a deadline. Common windows are 30 days (CP501), 60 days (CP2000 disputes), or 90 days (Statutory Notice of Deficiency). Respond before the deadline. Missing the deadline can result in tax assessments or loss of appeal rights.

Can I include lots of records?

Yes. PostPal mails up to 100 pages per letter under the extended-page option. Most IRS responses fit comfortably. Organize records by tax year and reference each one in your written response.

Should I keep a copy of what I sent?

Always. Your order page on PostPal stores the exact PDF that was printed and mailed. Keep your own copy of receipts and any supporting documents in case the IRS requests them again.

Related solutions

Other ways to send mail through PostPal.

Ready to send?

Type a letter or upload a PDF. We mail it via USPS within 24 hours.

Reply to the IRS — $5See all solutions