IRS · Tax Transcripts · CP2000 · Audits · Form 2848
Fax the IRS Online
With Certified Proof
IRS deadlines are strict. Get a SHA-256 certified receipt proving exactly when your documents reached the IRS — not when you sent them.
From $0.60 with credits · $1.29 pay-as-you-go · No account needed
IRS · Tax Transcripts · CP2000 · Audits · Form 2848
Fax the IRS Online
With Certified Proof
IRS deadlines are strict — late responses can trigger penalties or default assessments. Send tax forms, CP2000 responses, and audit replies from your browser and get a SHA-256 certified receipt proving exactly when the IRS received your documents.
Fax the IRS now
Certified receipt · No account required
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IRS deadlines are strict — late responses can result in penalties or default assessments. A SHA-256 certified receipt proves the exact date your documents arrived at the IRS — not when you sent them, when they were delivered. Verifiable at faxseal.com/verify.
What to fax to the IRS
Common documents sent to IRS service centers, CAF units, and examiners
Tax transcript requests (4506-T)
Request tax transcripts for mortgages, FAFSA, or IRS verification with certified proof of when the request was received.
CP2000 & CP2501 responses
Reply to IRS underreporter notices with supporting documents before the response deadline.
Power of attorney (Form 2848)
Authorize a CPA or tax attorney to represent you before the IRS. Use the fax number for your CAF unit.
Installment agreement (Form 9465)
Submit payment plan requests with certified proof of timely filing.
Audit & examination responses
Send supporting documents to your assigned examiner's fax with a tamper-evident delivery record.
Amended returns & correspondence
Respond to IRS letters and submit amended returns when the IRS requests paper documentation.
How it works
Upload your PDF
Your IRS form, signed response, or supporting documents. Up to 20MB.
Enter the IRS fax number
Use the fax number on your IRS notice, or find your form's fax number at irs.gov.
Pay & transmit
From $0.60 with credits · $1.29 pay-as-you-go. Card only charged on confirmed delivery.
Get certified receipt
SHA-256 receipt emailed instantly. Proves the exact date your documents reached the IRS.
Upload your PDF
Your IRS form, signed response, or supporting documents. Up to 20MB.
Enter the IRS fax number
Use the fax number on your IRS notice, or find your form's fax number at irs.gov.
Pay & transmit
From $0.60 with credits · $1.29 pay-as-you-go. Card only charged on confirmed delivery.
Get certified receipt
SHA-256 receipt emailed instantly. Proves the exact date your documents reached the IRS.
CPA or tax professional filing for multiple clients?
FaxSeal credits never expire — buy a bundle for your firm and use across all clients. Each fax generates its own certified receipt with a unique verify URL, giving you per-client proof of IRS submission.
Frequently asked questions
Why does certified proof matter when faxing the IRS?
The IRS calculates deadlines — CP2000 response windows, audit reply dates, and installment agreement timelines — from the date they receive your documents, not the date you sent them. A SHA-256 certified receipt creates a tamper-evident record of the exact delivery date, protecting you if the IRS claims they never received your response.
Where do I find the IRS fax number for my form?
IRS fax numbers vary by form type, service center, and the specific notice you received. For CP notices (CP2000, CP2501, etc.), use the fax number printed directly on the notice. For Form 2848 (Power of Attorney), use the fax number for your state's CAF unit listed at irs.gov. For Form 4506-T, check irs.gov/forms-pubs/about-form-4506-t for current numbers.
What is a SHA-256 certified receipt?
When your fax is delivered, FaxSeal generates a receipt containing the SHA-256 cryptographic hash of your exact document, the IRS fax number dialed, and the confirmed delivery timestamp. The hash permanently ties the receipt to that specific file — verifiable by anyone at faxseal.com/verify.
Can I sign IRS forms and fax them in one step?
Yes. Use the Sign & Fax tool — draw your signature, place it on the form, and fax directly from the same screen. No printing, no scanning, no fax machine.
What if the fax fails to deliver?
You are never charged for an undelivered fax. Your card authorization is released immediately. If the deadline is close, retry immediately or contact the IRS directly to confirm an alternative submission method.
Can a CPA or tax preparer use this for clients?
Yes. FaxSeal credits never expire — buy a bundle for your firm and use them across all clients. Each fax gets its own certified receipt with a unique verify URL, giving you per-client proof of timely IRS submission.
Don't let a deadline slip with the IRS
Certified SHA-256 receipt · From $0.60 with credits · $1.29 pay-as-you-go.