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πŸ“¬ How to Fax a CP2000 Response to the IRS From Anywhere

πŸ“… Updated November 2026 Β· 🌍 Send from any country
✦ Quick Answer

Fax your CP2000 response to the number for the IRS location printed on the top left of your notice. There are seven locations, each with its own number: Andover, Atlanta, Austin, Holtsville, Fresno, Ogden and Philadelphia. Reply by the date listed on the notice. Select United States, type the 10 digits with no leading 1, and pay $2.99 for up to 3 pages, then $0.99 per extra page.

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πŸ“‹ In This Guide

  1. Find the Location on Your Notice
  2. CP2000 Fax Numbers by Location
  3. What to Include in Your Response
  4. Reply by the Date on the Notice
  5. Other Ways to Respond: Upload or Mail
  6. Entering the Number From Abroad
  7. Cost, Delivery and Your Record
  8. Frequently Asked Questions

Find the Location on Your Notice

The IRS instruction is short: fax your response to the location listed on the top left side of the notice. Look at the top left of page 1. You will see an IRS address with a city, and that city decides your fax number. It does not matter where you live now or where you filed from; only the location printed on your notice counts.

The IRS sends a CP2000 when the income or payment information it received does not match what is on your return, and it proposes changes. Your response tells the IRS whether you agree, partly agree or disagree, and the notice explains how to show that.

The rule: the location on the top left of your notice decides the fax number. Match the city, then send to that number and no other.

CP2000 Fax Numbers by Location

Location on your noticeCP2000 fax numberType this
Andover, MA877-477-94858774779485
Atlanta, GA877-477-09678774770967
Austin, TX877-477-05838774770583
Holtsville, NY877-477-95998774779599
Fresno, CA877-477-09628774770962
Ogden, UT877-477-96408774779640
Philadelphia, PA877-477-96028774779602

These are the numbers the IRS lists on its page about understanding your CP2000. If your notice itself prints a fax number, use the one on the notice. For other IRS notices and forms, see our hub on how to fax the IRS.

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What to Include in Your Response

The response form from your notice, completed as the notice explains, with your choice marked and signed where it asks. Fax the response pages as they came, not retyped.

A signed statement if you disagree with any part. Explain which items you disagree with and why, in plain sentences, and sign it.

Supporting documents. Copies of whatever backs up your answer, such as corrected forms from a payer, statements showing cost basis, or records showing an item was already reported.

On every page, put the notice number and the identifying information the notice asks for. A CP2000 reply can run to many pages, and faxed sheets can be separated on arrival; the identifying details on each page are how they get put back together. Scan to PDF rather than photographing pages, so figures stay readable in black and white.

Reply by the Date on the Notice

Reply by the date listed on the notice. Go by that date, not by a number of days you read somewhere else. If you live abroad, the notice may have spent weeks in the mail, which is the main reason people outside the United States fax: the pages reach the IRS usually within a few minutes.

Do not wait until the last day. If a fax line is busy you will want time to try again, and you are refunded automatically for any fax that cannot be delivered.

Send a fax to the IRS, $2.99

Other Ways to Respond: Upload or Mail

The IRS offers two other routes. The online upload tool, which the IRS calls the fastest way to respond, takes your documents through its website. Or you can mail your response to the address on the top left of page 1 of the notice.

Fax suits people who are abroad, people with paper documents already scanned, and anyone who wants a dated record that the pages went through to the number for their notice location. Use one route for a response rather than sending the same pages three ways.

Entering the Number From Abroad

All seven CP2000 fax numbers are US numbers. Select United States from the list and type the 10 digits, with no leading 1, no spaces and no dashes, as shown in the right-hand column of the table. Our guide to faxing to the USA covers the format, and our guide to sending a fax from outside the United States covers paying and uploading from another country.

From the US or anywhere else in the world, OverseasFax is built for this.

Send a fax to the IRS, $2.99

Cost, Delivery and Your Record

US numbers are $2.99 for up to 3 pages, then $0.99 per extra page. A typical CP2000 response, for example the response pages, a two-page signed statement and five pages of supporting documents, comes to about 10 pages: $9.92. You see the price before you pay, and you can send up to 10 files in one fax.

There is no account, nothing is printed on your document, and delivery usually takes a few minutes. The confirmation email shows the destination number, the page count and the time it went through, in US Eastern Time: your record of exactly when it was sent. Keep it with a copy of your response. If the fax cannot be delivered, you are refunded automatically.

If the IRS offers to fax something back to you, our sister service GetAFax.com gives you a US fax number for 24 hours for $5, and faxes arrive in your email.

Why send it here

One price for the whole fax, shown before you pay, and nothing added at checkout.

Nothing is printed on your document. It arrives exactly as you uploaded it.

If it cannot be delivered, the money goes back to your card without you asking.

It works from anywhere. Send from any country, in any browser, with no account.

Frequently Asked Questions

Cost and what you get
How much does it cost to fax a CP2000 response?
$2.99 for up to 3 pages, then $0.99 per extra page. A 10-page CP2000 response costs $9.92. There is no account or subscription.
Is there a cheaper way to fax my CP2000 response?
OverseasFax charges $2.99 for up to 3 pages and $0.99 for each extra page, from the US or any other country, with no account, no subscription and nothing added at checkout. Free fax services do exist, but they usually cap the number of pages and print their own advertising on the cover page, which you do not want on a reply to the IRS.
Can I fax a CP2000 response for free?
Free fax services usually limit pages and add their own advertising to the cover page. A CP2000 reply often runs past their limits, and a dated record that it went through matters with a reply date on the notice.
Sending a fax
Can I fax my CP2000 response to the IRS?
Yes. The IRS says to fax your response to the location listed on the top left side of the notice. Each of the seven locations has its own fax number.
What do I include when I fax a CP2000 response?
The response form from your notice, completed and signed as it asks, a signed statement if you disagree with anything, and copies of supporting documents. Put the notice number and the identifying information the notice asks for on every page.
I disagree with my CP2000, what do I fax?
The response form with your choice marked as the notice explains, a signed statement saying which items you disagree with and why, and copies of documents that back you up. Fax it to the number for the location on the top left of your notice.
I'm working in Singapore and my CP2000 reply is due this week, can I still fax it from here?
Yes. OverseasFax works in a browser in any country and usually delivers within a few minutes. Select United States and type the 10-digit number for the location on your notice.
Is it better to fax or upload my CP2000 response?
The IRS calls its online upload tool the fastest way to respond. Fax is a good choice if you are abroad, have scanned paper documents, or want a dated record that the pages went through.
Can I mail my CP2000 response instead of faxing it?
Yes. Mail it to the address on the top left of page 1 of the notice. Use one route rather than sending the same response by fax, upload and mail.
Fax numbers and format
What is the CP2000 fax number?
It depends on the location on the top left of your notice. The seven numbers are Andover 877-477-9485, Atlanta 877-477-0967, Austin 877-477-0583, Holtsville 877-477-9599, Fresno 877-477-0962, Ogden 877-477-9640 and Philadelphia 877-477-9602.
What is the CP2000 fax number for Austin, Texas?
877-477-0583. Use it only if Austin is the location printed on the top left of your notice.
What is the CP2000 fax number for Fresno, California?
877-477-0962. Use it only if Fresno is the location printed on the top left of your notice.
What is the CP2000 fax number for Holtsville, New York?
877-477-9599. Use it only if Holtsville is the location printed on the top left of your notice.
What is the CP2000 fax number for Philadelphia?
877-477-9602. Use it only if Philadelphia is the location printed on the top left of your notice.
How do I enter a CP2000 fax number from outside the US?
Select United States, then type the 10 digits with no leading 1 and no dashes. Austin's 877-477-0583, for example, is entered as 8774770583.
Receiving a reply
Will the IRS fax me back about my CP2000?
Only if the IRS arranges it. If you need a number to receive a fax, our sister service GetAFax.com gives you a US fax number for 24 hours for $5, and faxes arrive in your email.
Delivery, proof and safety
What record do I get when I fax my CP2000 response?
A confirmation email with the destination number, the page count and the time the fax went through, in US Eastern Time. It is your record of exactly when it was sent, so keep it with a copy of your response.
Why did my CP2000 fax fail?
Usually a busy line, especially near reply dates, or a leading 1 typed in front of the 10 digits. You are refunded automatically, so check the number and send again.
What do I write on each page of a CP2000 fax?
The notice number and the identifying information the notice asks for. That way pages that get separated on arrival can still be matched to your case.
More questions
Do I have 30 days to respond to a CP2000?
Go by the date listed on your notice. Reply by that date rather than counting a general number of days.
Can I fax my CP2000 response to a different IRS location than the one on my notice?
No. Fax it to the number for the location on the top left of your notice. A response sent to another location is not going to the team handling your case.
I got a CP3219A after my CP2000, can I fax my reply the same way?
Yes. The IRS page for CP3219A says to fax your response to the location listed on the top left of the notice, and the fax numbers are the same seven used for CP2000. These numbers are not for a Tax Court petition: if you want to take the case to the US Tax Court, the petition goes to the court by the date on your notice.

Related Guides

πŸ“– How to Fax the IRS

πŸ“– Fax IRS Letter 12C and Form 8962

πŸ“– Fax IRS International Accounts

πŸ“– Fax Form 911 to the Taxpayer Advocate

πŸ“– Fax Form 2848 to the IRS From Abroad

πŸ“– How to Fax to the USA Online

πŸ“– Send a Fax From Outside the United States

πŸ“– What an International Fax Costs

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