Where to Send Form 433-D
Form 433-D goes to the address on the letter that came with it, or the address in the "For assistance" box on the form. There is no public fax number for it.
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Sending the signed form
Sign and date Part 1 and send it to the IRS at the address on the letter that came with it, or the address shown in the "For assistance" box on the front of the form. Part 2 is your copy. The form prints no fax number, so the only fax number that applies is one printed on your letter. For questions, the form points to the phone number on your notice or at the top of the form.
Form 433-D vs. Form 9465
Form 9465 is the request for an installment agreement, mailed with a return or on its own; the Form 9465 guide covers it. Form 433-D is the agreement form, which usually reaches you with an IRS letter for signature.
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Frequently Asked Questions
What is the fax number for Form 433-D?
The IRS lists none. If the letter that came with your form gives a fax number, use that one.
Where do I mail Form 433-D?
To the address on the letter that came with it, or the address in the "For assistance" box on the front of the form. Send Part 1; Part 2 is your copy.
Can I fax Form 433-D if my letter gives a fax number?
Yes. Fax the signed Part 1 to the number on the letter. If you chose direct debit, complete the direct-debit section or attach a voided check. Keep the confirmation as a timestamped record that the IRS fax line took every page; the proof-of-filing guide covers what it does not show.
I downloaded a blank Form 433-D and have no letter. Who do I call?
The form's assistance box prints 1-800-829-3903 for self-employed individuals, business owners and businesses, and 1-800-829-7650 for wage earners. Ask where to send it before you do.
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