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Where to mail your Kansas state tax return

Mail your Kansas Form K-40 to Kansas Department of Revenue, PO Box 750260, Topeka, KS 66699-0260. Sign and date the form before mailing it.

Return (with or without payment)

Kansas Department of Revenue
PO Box 750260
Topeka, KS  66699-0260

Use this address for a paper Form K-40 where return (with or without payment).

Verified September 2026ksrevenue.gov

Write it now. We print & mail it for $5.

Type your letter in the browser. We print it, stamp it, and hand it to USPS — usually same business day. No printer, no stamps, no post office.

Mail my Kansas tax return — $5

$5 flat · postage included · no account needed

  • You write & pay
  • We print & envelope
  • USPS, next business day
  • Confirmation of Mailing emailed

Your name
Your return address

Kansas Department of RevenuePO Box 750260Topeka, KS 66699-0260

Your letter, printed and mailed for you.

Key facts

  • Kansas uses one address for Form K-40 regardless of whether you owe or are due a refund.
  • Make checks or money orders payable to "Kansas Income Tax".
  • Kansas uses the same address whether or not you enclose a payment — printed directly on the K-40 form itself.
  • 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

    Confirm the address

    Kansas uses a single mailing address for Form K-40, shown above, regardless of whether you're enclosing a payment.

  2. 2

    Assemble and sign your return

    Attach any required schedules and withholding statements to your Form K-40. Sign and date it — an unsigned paper return isn't considered filed.

  3. 3

    Address the envelope exactly

    Use Kansas Department of Revenue at the address for your situation, shown above. Kansas uses the same address whether or not you enclose a payment — printed directly on the K-40 form itself.

  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 Kansas state tax return?

Mail it to Kansas Department of Revenue, PO Box 750260, Topeka, KS 66699-0260 — Kansas uses this one address regardless of whether you owe or are due a refund.

Does it matter which Kansas address I use?

No — Kansas doesn't split this by payment status, so there's only one address to use.

What do I make my check payable to?

"Kansas Income Tax". Write your Social Security number and the tax year on the check or money order.

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

Generally yes — most states, including Kansas, 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 Kansas tax return for me?

Yes. Upload your completed, signed Form K-40 and PostPal prints it and mails it to Kansas Department of Revenue, PO Box 750260, Topeka, KS 66699-0260 (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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