IRS tax forms
Internal Revenue Service / Ogden Centralized Authorization File unit
Submit Form 8821 tax information authorization for the IRS western state group
Use the number only for the documented purpose and routing rule below.
This listing does not guarantee delivery, processing, acceptance, or deadline treatment. Recheck the official instructions before sending.
Route decision
Is this the right fax route?
Match all three checks before using the number.
- 01 Purpose
- Submit Form 8821 tax information authorization for the IRS western state group
- 02 Region or eligibility
- Alaska, Arizona, California, Colorado, Hawaii, Idaho, Iowa, Kansas, Minnesota, Missouri, Montana, Nebraska, Nevada, New Mexico, North Dakota, Oklahoma, Oregon, South Dakota, Texas, Utah, Washington, Wisconsin, or Wyoming.
- 03 Required form or document
- Completed and signed Form 8821, Tax Information Authorization.
Submission notes
What to put on the route.
Routing instructions
Use the taxpayer address to choose the CAF unit. Identify the tax information, forms, periods, and specific matters covered by the authorization.
Official source and check date
Recheck the route before sending.
- Recipient
- Internal Revenue Service
- Fax
- 855-214-7522
- Last checked
As of August 24, 2026, the linked Internal Revenue Service source listed this number for the purpose shown. Just One Fax is not affiliated with or endorsed by Internal Revenue Service.
Before transmission
Questions to answer before sending.
What is the Internal Revenue Service fax number for this purpose?
855-214-7522 is the fax number published in the cited official source for this specific purpose: Submit Form 8821 tax information authorization for the IRS western state group. Recheck the source immediately before sending.
How do I know whether this is the right regional route?
Alaska, Arizona, California, Colorado, Hawaii, Idaho, Iowa, Kansas, Minnesota, Missouri, Montana, Nebraska, Nevada, New Mexico, North Dakota, Oklahoma, Oregon, South Dakota, Texas, Utah, Washington, Wisconsin, or Wyoming.
What should I send to this fax number?
Completed and signed Form 8821, Tax Information Authorization. Use the taxpayer address to choose the CAF unit. Identify the tax information, forms, periods, and specific matters covered by the authorization.
Does this listing guarantee acceptance?
No. The linked source listed this route on August 24, 2026, but only the recipient can determine delivery, eligibility, processing, acceptance, or deadline treatment.
Number prefilled, decision still yours
Prepare one careful fax.
Open the send flow with 855-214-7522 prefilled. Compare it with the official source again before checkout.
Send to 855-214-7522