Faxing tax forms to the IRS remains one of the fastest ways to submit time-sensitive paperwork—especially for forms that still accept fax submissions.
Whether you’re filing an S-Corp election, authorizing a tax professional, or following up on a refund, using the correct IRS fax number ensures your documents reach the right department without delays.
The IRS assigns specific fax numbers based on the form type, filing purpose, and service center location.
For example, forms processed by the Centralized Authorization File (CAF) Unit—such as Form 2848 or Form 8821—have a different fax number than those for EIN applications or refund claims.
Some fax numbers appear only on IRS notices or in the most recent filing instructions, which can vary by year or region.
To save you time, we’ve compiled the most accurate and current IRS fax numbers, verified from official IRS.gov sources and trusted tax-service references.
Still, always confirm your form’s instructions before sending.
Fax numbers are verified directly from IRS.gov where available. Other entries come from trusted tax-service sources and verified user submissions.
Always check your form’s latest IRS instructions before faxing.
⚠️ Reminder: IRS fax numbers may vary depending on your location or service center. Always verify with your form’s official IRS instructions or notice before sending.
Even as the IRS expands its electronic submission options, faxing remains a reliable method for sending urgent or confidential forms.
Faxing provides:
With an online fax service like Fax.xyz, you can send IRS forms instantly—no fax machine, no phone line, no waiting.
You don’t need a fax machine to send IRS forms.
just follow these three simple steps:
When submitting sensitive tax documents, security, reliability, and compliance are essential. Fax.xyz helps individuals and businesses fax IRS forms quickly and securely — no hardware required.
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Tip: Fax.xyz can also be used to fax state tax forms, payroll documents, or financial statements — all in the same secure platform.
Yes. Many IRS forms still accept fax submissions, especially time-sensitive or sensitive forms like Form 2553, 2848, or 8821. Always check your form’s instructions for the correct fax number.
Use the verified IRS fax number directory above, or check your form’s official instructions. Fax numbers may vary by form type, submission purpose, and service center.
Yes. Online fax services like Fax.xyz let you securely fax IRS forms from your computer, tablet, or phone.
Absolutely. Using a secure online fax service encrypts your documents during transmission and provides proof of delivery.
Common faxed forms include Form 2553 (S-Corp election), Form 2848 (Power of Attorney), Form 8821 (Tax Information Authorization), Form 3911 (Tax Refund Inquiry), and EIN applications (Form SS-4).
Yes. Online fax services provide an instant confirmation sheet and an audit trail showing the time and status of your IRS fax delivery.
Avoid mail delays and lost paperwork. Send tax forms directly to the IRS via fax in minutes.No account setup. No hidden fees. Just a secure, instant fax delivery service you can trust.
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