Before you fax
The IRS lists 304-707-9785 when the fax transmission itself originates outside the United States.
Official source checkedwww.irs.gov ↗
IRS · verified routing workflow
Fax international IRS Form 8821 from within the U.S.
Official IRS international CAF routing for Form 8821 tax information authorizations.
Send this fax
Use the verified number below to prefill the sender. You can still review it before payment.
Use number 855-772-3156 →MORE VERIFIED ROUTES
Start with the task — not the fax number.
Fax IRS Form 3911 from Florida, Texas & Austin-routed states
Austin Refund Inquiry Unit
Open workflow →Fax IRS Form 3911 from California and western states
Fresno Refund Inquiry Unit
Open workflow →Fax IRS Form 3911 from New York
Brookhaven Refund Inquiry Unit
Open workflow →Fax IRS Form 3911 to the Kansas City Refund Inquiry Unit
Kansas City Refund Inquiry Unit
Open workflow →Fax IRS Form 2848 to the Memphis CAF Unit
Memphis CAF Unit
Open workflow →Fax IRS Form 2848 to the Ogden CAF Unit
Ogden CAF Unit
Open workflow →