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Where to mail your Missouri state tax return

Mailing your Missouri Form MO-1040 depends on your situation: Balance due return goes to Missouri Department of Revenue, PO Box 3370, Jefferson City, MO 65105-3370, while Refund return goes to Missouri Department of Revenue, PO Box 3222, Jefferson City, MO 65105-3222. Pick the address that matches your return below, sign and date the form, and mail it before the deadline.

Balance due return

Missouri Department of Revenue
PO Box 3370
Jefferson City, MO  65105-3370

Use this address for a paper Form MO-1040 where balance due return.

Verified September 2026dor.mo.gov

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  • Confirmation of Mailing emailed

Other mailing addresses

Refund return

Missouri Department of Revenue
PO Box 3222
Jefferson City, MO  65105-3222

Use this address for a paper Form MO-1040 where refund return.

Your name
Your return address

Missouri Department of RevenuePO Box 3370Jefferson City, MO 65105-3370

Your letter, printed and mailed for you.

Key facts

  • Missouri splits paper Form MO-1040 returns by address: balance due return vs. refund return — mailing to the wrong one can delay processing.
  • Make checks or money orders payable to the "Missouri Department of Revenue".
  • If claiming a Property Tax Credit alongside your return, the boxes differ (3385 for refund, 3395 for balance due) — see the current MO-1040 instructions.
  • A mailed return is generally considered filed on time if it is postmarked by the state filing deadline — sign and date it, since an unsigned return isn't considered filed.
  • PostPal prints your return and hands it to USPS the next business day for $5 — no printer, envelope, or trip to the post office.

How to send your letter

  1. 1

    Pick the address that matches your situation

    Missouri uses a different address depending on whether you're enclosing a payment: Balance due return; Refund return. Choose the one below that matches your return.

  2. 2

    Assemble and sign your return

    Attach any required schedules and withholding statements to your Form MO-1040. Sign and date it — an unsigned paper return isn't considered filed.

  3. 3

    Address the envelope exactly

    Use Missouri Department of Revenue at the address for your situation, shown above. If claiming a Property Tax Credit alongside your return, the boxes differ (3385 for refund, 3395 for balance due) — see the current MO-1040 instructions.

  4. 4

    Mail it before the deadline

    A USPS postmark by the filing deadline counts as on time. Upload your return to PostPal and we print, envelope, and mail it within one business day for $5, with a dated confirmation emailed to you.

Common questions

Where do I mail my Missouri state tax return?

It depends on whether you're enclosing a payment. For "balance due return," mail it to Missouri Department of Revenue, PO Box 3370, Jefferson City, MO 65105-3370. For "refund return," mail it to Missouri Department of Revenue, PO Box 3222, Jefferson City, MO 65105-3222.

Does it matter which Missouri address I use?

Yes. Missouri Department of Revenue routes paper returns by mail code, so sending a payment return to the no-payment address (or vice versa) can delay processing, even though the state and ZIP still get it to the right building.

What do I make my check payable to?

The "Missouri Department of Revenue". Write your Social Security number and the tax year on the check or money order.

Is a mailed Missouri return considered on time if it's postmarked by the deadline?

Generally yes — most states, including Missouri, treat a return as timely filed if it carries a USPS postmark on or before the filing deadline. Keep proof of mailing for your records; PostPal emails you a dated confirmation.

Can PostPal mail my Missouri tax return for me?

Yes. Upload your completed, signed Form MO-1040 and PostPal prints it and mails it to Missouri Department of Revenue, PO Box 3370, Jefferson City, MO 65105-3370 (or your correct address, based on your situation) the next business day for $5, with a dated Confirmation of Mailing.

Sources

Addresses verified September 2026 against official sources. Always confirm on the official site before time-sensitive filings.

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