IRS Fax Number Directory
by Form and State
The IRS has no single fax number, the state split does not follow the Mississippi River, and one widely shared number is a voice line that rejects every fax. Every listing below shows the official IRS page it came from, the date we checked it.
IRS fax numbers and routing instructions can change. Before sending, visit the official IRS source for your form and verify the current number, or follow the instructions on your IRS notice. If the instructions are unclear, contact the IRS before sending.
Plan ahead during tax season. If an IRS fax line is busy, wait for your final delivery result before sending again. You may need to try outside normal business hours, where the receiving office allows it. Sending at a different time does not guarantee delivery or extend a filing deadline.
Form SS-4
855-641-6935
Employer Identification Number (EIN) application
All 50 states and the District of Columbia
Checked 2026-10-03 against the official IRS page
855-215-1627
EIN application, no US legal residence
No legal residence, principal place of business or principal office in any state, filing from inside the United States
Checked 2026-10-03 against the official IRS page
304-707-9471
EIN application, filing from abroad
Same as above, filing from outside the United States
Checked 2026-10-03 against the official IRS page
Form 2553
855-887-7734
S-Corporation election, Kansas City
CT, DE, DC, GA, IL, IN, KY, ME, MD, MA, MI, NH, NJ, NY, NC, OH, PA, RI, SC, TN, VT, VA, WV, WI
Checked 2026-10-03 against the official IRS page
855-214-7520
S-Corporation election, Ogden
AL, AK, AZ, AR, CA, CO, FL, HI, ID, IA, KS, LA, MN, MS, MO, MT, NE, NV, NM, ND, OK, OR, SD, TX, UT, WA, WY
Checked 2026-10-03 against the official IRS page
Form 2848
855-214-7519
Power of Attorney, CAF unit Memphis
AL, AR, CT, DE, DC, FL, GA, IL, IN, KY, LA, ME, MD, MA, MI, MS, NH, NJ, NY, NC, OH, PA, RI, SC, TN, VT, VA, WV
Checked 2026-10-03 against the official IRS page
855-214-7522
Power of Attorney, CAF unit Ogden
AK, AZ, CA, CO, HI, ID, IA, KS, MN, MO, MT, NE, NV, NM, ND, OK, OR, SD, TX, UT, WA, WI, WY
Checked 2026-10-03 against the official IRS page
855-772-3156
Power of Attorney, CAF unit Philadelphia
APO and FPO addresses, American Samoa, Northern Mariana Islands, Guam, US Virgin Islands, Puerto Rico, foreign countries
Checked 2026-10-03 against the official IRS page
304-707-9785
Power of Attorney, filing from abroad
Same taxpayer-address group as the row above (territories, APO/FPO, foreign addresses); number for dialing from outside the United States
Checked 2026-10-03 against the official IRS page
Not a fax line
800-829-4933 is widely shared as an IRS fax number. It is the IRS Business and Specialty Tax telephone line. Use the fax number in the official instructions for your form.
How each number is checked
- Source checked. Every number is read from the official IRS Where To File page for that form, and the date is shown beside it.
- Flagged. Confirm that the number is listed as a fax destination in the current IRS instructions before sending.
IRS fax numbers change without notice. Check the linked IRS page before you send, especially for a deadline-sensitive filing.
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Frequently asked questions
Should I verify the IRS fax number before sending?
Yes. IRS fax numbers and routing instructions can change. Visit the official IRS source linked beside your form and verify the current number before sending, or follow the instructions on your IRS notice. If a line is busy during tax season, wait for the final delivery result before trying again. You may need to try outside normal business hours, where the receiving office allows it; this does not guarantee delivery or extend a filing deadline.
Is there one single IRS fax number?
No. The IRS has no central public fax number. Routing depends on the form you are filing and, for most forms, on the state of your principal business, office or residence. A number that is correct for Form 2553 is not correct for Form 2848 from the same state.
Do IRS fax numbers follow the Mississippi River?
That shorthand is close but wrong often enough to misroute a filing. The IRS itself describes the split as west of the Mississippi to Ogden and east to Memphis, with Louisiana, Arkansas and Wisconsin as stated exceptions. Wisconsin is the clearest example of why the shorthand fails: for Form 2553 it routes to Kansas City in the eastern group, while for Form 2848 it routes to Ogden in the western group. Use the state list for your specific form.
Why does an IRS number I found online not accept a fax?
Many widely published IRS numbers are voice lines, not fax lines. 800-829-4933 is a common example: it is the IRS Business and Specialty Tax line and answers with a recorded greeting, so a fax attempt fails no matter how many times it retries. IRS routing also changes without notice, so a number copied from an older article may be retired.
Does the IRS confirm that it received my fax?
Keep your carrier transmission result. It does not establish IRS acceptance or processing. IRS responses depend on the form and case. Follow the instructions for your filing and any return-contact information they request.
Davis Hill, founder, FaxItOnce (a GovBotics service).