Send your CP2000 reply: upload, fax or mail, step by step
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Send your CP2000 reply: upload, fax or mail, step by step
By Tax Letter Desk Updated November 4, 2026
Short answer
Upload it with the IRS Document Upload Tool, the fastest option. JPG, PNG and PDF files work.
Or fax it to the office on the top left of your notice, or mail it to the address there.
Send it by the response date on the notice.
Checked November 4, 2026 against IRS CP2000 page (Jul 14, 2026) .
In this article
How do I upload my reply?
Which fax number do I use?
Where do I mail it?
In what order do I do it?
Where do I mail a payment?
Questions
How do I upload my reply?
The IRS calls upload the fastest way to send your reply.
You can upload photos or scans as JPG, PNG or PDF files.
You need the access code or notice number, the name on the notice, and your SSN or taxpayer ID.
The IRS CP2000 page lists the access code 895ny-k9654.
Answer 7 questions and choose, item by item. We prepare the rest.
Which fax number do I use?
Use the office listed on the top left of your notice.
Using an online fax service? Check its privacy and security policies.
Pub 5181 asks you to put your name and SSN or taxpayer ID on each faxed page.
Where do I mail it?
To the address on the top left corner of the first page of the notice.
Lost the envelope? Use the address on the first page of the Response form.
In what order do I do it?
Check the response date It’s printed on the notice. That date is the one that counts.
Complete and sign the form Mark agree or disagree. Both spouses sign a joint return.
Add your statement and copies Only if you disagree. Send copies, not originals.
Choose upload, fax or mail Send it all together, by the response date.
Keep your copies Keep the notice and your corrected copy of the return for your records.
Where do I mail a payment?
The IRS lists a payment address for each office.
Sources
Understanding your CP2000 series notice IRS, updated July 14, 2026
Topic no. 652, Notice of underreported income, CP2000 IRS, updated October 16, 2026
IRS Document Upload Tool IRS, updated August 27, 2026
Publication 5181, Tax return reviews by mail (PDF) IRS, revision December 2022
Questions
JPG, PNG or PDF files.
Yes. The IRS asks you to understand its privacy and security policies first.
No. Pub 5181 asks for photocopies.
Related guides
How to respond to a CP2000 notice Pillar guide
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