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Internal Revenue Service (IRS) - Austin Refund Inquiry Unit fax number
(852) 203-7538
Refund Inquiry Unit (RFIU)
Used for: Submit IRS Form 3911, Taxpayer Statement Regarding Refund, to the Refund Inquiry Unit to trace a lost or missing refund.
Fax destination details
- Department
- Refund Inquiry Unit (RFIU)
- Purpose
- Submit IRS Form 3911, Taxpayer Statement Regarding Refund, to the Refund Inquiry Unit to trace a lost or missing refund.
- Form
- Form 3911 — Taxpayer Statement Regarding Refund
- Address
- Austin Refund Inquiry Unit, 3651 S IH 35 STOP 6542, Austin, TX 78741-7855
- Website
- Visit organization website
Before you send
- Confirm that this exact department handles your document or request.
- Check the organization website or call its main line for the current fax number.
- Include a cover sheet and any case, member, claim, or form reference required.
- Keep the delivery confirmation with your submission records.
Complete Form 3911 and mail or fax to the Refund Inquiry Unit serving your state. Do not send anything other than Form 3911. See IRS instructions for details.
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