What is the main IRS fax number?

There is no single IRS fax number. Each IRS form has specific fax numbers based on the form type and sometimes your state. The most commonly used IRS fax number is 855-214-7522, which handles Forms 2553, 2848, and 8821.

Can I fax any form to the IRS?

No. Not all IRS forms accept fax submissions. Forms like 2553, 2848, 8821, 3911, SS-4, 4506-T, and 14039 have dedicated fax numbers. Other forms like 1040-X and 8822 must be mailed or e-filed.

Are IRS fax numbers toll-free?

Most IRS fax numbers starting with 855 are toll-free. Some regional or international numbers may incur charges. Always verify the current number on IRS.gov before sending.

Can I fax IRS forms from my phone?

Yes. FaxFlow lets you fax IRS forms directly from your iPhone or Android phone. Simply scan or upload your completed form and enter the IRS fax number.

Complete List of IRS Fax Numbers (2026, Verified)

Below is a complete, verified directory of IRS fax numbers for all commonly faxed tax forms. Each number links to its detailed form guide with step-by-step filing instructions. All fax numbers were verified against official IRS sources.

Disclaimer: This page is for informational purposes only and does not constitute tax, legal, or financial advice. FaxFlow is a fax transmission service — we are not tax professionals. IRS fax numbers can change without notice. Always verify the current fax number on IRS.gov or the official form instructions before sending.

Form 2553: S Corporation Election

Fax This Form

Standard Processing:855-214-7522

Urgent/Late Elections:855-214-7519

View full guide →IRS source →

Form 2848: Power of Attorney

Fax This Form

CAF Unit:855-214-7522

View full guide →IRS source →

Form 8821: Tax Information Authorization

Fax This Form

CAF Unit:855-214-7522

View full guide →IRS source →

Form 3911: Taxpayer Statement Regarding Refund

Fax This Form

IRS Refund Unit:855-253-3147

View full guide →IRS source →

Form SS-4: EIN Application

Fax This Form

Domestic (50 states & DC):855-641-6935

International/Territories:855-215-1627

Outside US:304-707-9471

View full guide →IRS source →

Form 4506-T: Tax Transcript Request

Fax This Form

Southern Region (FL, LA, MS, TX):855-587-9604

Western Region (CA, CO, AZ, WA + more):855-298-1145

Central Region (NY, IL, GA, NC + more):855-821-0094

View full guide →IRS source →

Form 14039: Identity Theft Affidavit

Fax This Form

IRS Identity Theft Unit:855-807-5720

View full guide →IRS source →

Form 911: Taxpayer Advocate Service Request

Fax This Form

TAS General Fax:855-828-2723

View full guide →IRS source →

IRS Forms Filed by Mail or Online (No Fax Number)

These commonly searched forms do not have dedicated IRS fax numbers. They must be filed by mail or electronically. You can still use FaxFlow to fax copies to your tax professional, CPA, or attorney.

Form 9465: Installment Agreement

File online at IRS.gov/OPA or mail

Form 4868: Extension of Time

E-file recommended

Form 1040-X: Amended Return

E-file or mail

Form 656: Offer in Compromise

Mail or IRS Online Account

Form 8822: Change of Address

Mail only

Form 8832: Entity Classification

Mail only