IRS Form 8508 fax number (e-file waiver)
Where to fax Form 8508, Application for a Waiver from Electronic Filing of Information Returns, to the IRS.
Verified October 22, 2026Checked against Form 8508 (Rev. 9-2026), Application for a Waiver from Electronic Filing of Information Returns, How to File.
| Who uses it | Office | Fax |
|---|---|---|
| Form 8508 sent from the United States | IRS, Attn: Extension of Time Coordinator | 877-477-0572 304-579-4105 from outside the US |
Before you fax
- The form says to select only one filing method: online or fax.
- From outside the United States, the form gives a separate international fax number, 304-579-4105.
- File Form 8508 onlineThe form lists IRS mobile-friendly forms as the online method. Choose only one method.