Form 1065 can't be faxed — mail it by Certified Mail

There is no fax number for Form 1065. A paper partnership return goes by mail to the Internal Revenue Service Center in Kansas City, MO 64999-0011 or Ogden, UT 84201-0011 — chosen by the state of the partnership's principal business and its total assets — and a partnership based abroad mails it to P.O. Box 409101, Ogden, UT 84409.

Kansas City takes the 24 eastern states and DC when total assets at year end are under $10 million and Schedule M-3 isn't filed; everything else goes to Ogden. We pick the address from your state, print your return, and send it by USPS Certified Mail with tracking — the postmark is your filing date under IRC §7502.

Paper filing isn't for everyone: a partnership that files 10 or more returns of any type in the year, or has more than 100 partners, must e-file Form 1065.

Download the blank form from IRS.gov: Form 1065 (PDF) + Schedule K-1 (1065) (PDF) + Schedule B-1 (1065) (PDF)

Deadline

Calendar-year partnerships: March 15 (the 2025 return is timely by March 16, 2026). Form 7004 extends the deadline by 6 months.

Frequently asked questions

No. Form 1065 is filed by mail to the address in the current instructions or electronically. Any fax number you find for it is not an IRS filing channel.

Kansas City, MO 64999-0011 if the principal business is in CT, DE, DC, GA, IL, IN, KY, ME, MD, MA, MI, NH, NJ, NY, NC, OH, PA, RI, SC, TN, VT, VA, WV or WI and total assets are under $10 million without Schedule M-3. Ogden, UT 84201-0011 for every other state and for larger partnerships. A foreign country or U.S. territory: P.O. Box 409101, Ogden, UT 84409.

The 6-page Form 1065 (Schedule L, the balance sheet, is its page 6), a Schedule K-1 for every partner, Schedule B-1 when a partner owns 50% or more, and any other schedule the return calls for. Upload them as one PDF or several — we merge them in order.

Yes if the partnership files 10 or more returns of any type during the year (information, income, employment and excise returns all count) or has more than 100 partners. Otherwise paper filing is allowed.

For 2025 returns the penalty is $255 for each month or part of a month the return is late, up to 12 months, multiplied by the number of partners.

The IRS doesn't accept Form 1065 by fax — a partnership return is mailed or e-filed. Below we print and mail it for you by USPS Certified Mail. The forms below fax today: 5472+1120, SS-4, 2553.

Mail Form 1065 to the IRS — certified

We print your PDF, mail it by USPS Certified Mail to the correct IRS service center for your state, and send you the tracking. Certified Mail is accepted as proof of filing under IRC §7502 — the postmark is your filing date.

Proof level

Certified Mail — $9.99 ?
Proof of mailing + delivery tracking.

Certified + electronic return receipt — $14.99 ?
Adds the signed proof-of-delivery receipt.

State on the filing *

Address is outside the U.S. / a U.S. possession

Total assets $10 million or more at year end, or Schedule M-3 attached (these returns go to Ogden)

Your return address

Goes on the envelope so undeliverable mail comes back to you — never our address.

Full name *

Company (optional)

State *

ZIP *

Pick your state (and ZIP if you know it) — it sharpens the address suggestions below.

Street address *

City *

Apt / suite (optional)

Your signed Form 1065 (PDF) *

Drag & drop your PDF here Tap to choose your PDF or browse files · up to 25 pages

Form + attachments? Add several PDFs — we merge them in order. Flat price up to 12 pages; $2.99 flat after (max 25). Printed black & white, double-sided.

Email for tracking *

One-time payment · no subscription · we file it the same business day.

Deadline

Frequently asked questions

Can Form 1065 be faxed to the IRS?

Where do I mail Form 1065?

What goes in the envelope?

Do I have to e-file instead?

What does filing late cost?

Mail Form 1065 to the IRS — certified