IRS Form 15109 fax number (combat zone deferment)
Where to fax Form 15109, Request for Tax Deferment, which members of the military use to ask for a combat zone deferment after an IRS notice CP04.
Verified October 22, 2026Checked against Form 15109 (Rev. 1-2023), Request for Tax Deferment.
| Who uses it | Office | Fax |
|---|---|---|
| People who received notice CP04 and are requesting a tax deferment | IRS, Request for Tax Deferment | 855-233-8562 |
Before you fax
- The form's first choice is the IRS Document Upload Tool described on your notice CP04; mail in the enclosed envelope or fax are the other options.