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Where to mail your Iowa state tax return

Mail your Iowa IA 1040 to Iowa Income Tax – Document Processing, PO Box 9187, Des Moines, IA 50306-9187. Sign and date the form before mailing it.

Return (with or without payment)

Iowa Income Tax – Document Processing
PO Box 9187
Des Moines, IA  50306-9187

Use this address for a paper IA 1040 where return (with or without payment).

Verified September 2026revenue.iowa.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 Iowa 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

Iowa Income Tax – Document ProcessingPO Box 9187Des Moines, IA 50306-9187

Your letter, printed and mailed for you.

Key facts

  • Iowa uses one address for IA 1040 regardless of whether you owe or are due a refund.
  • Make checks or money orders payable to the "Iowa Income Tax – Document Processing".
  • Iowa uses the same address whether or not you enclose a payment — attach an IA 1040V voucher if you owe.
  • 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

    Iowa uses a single mailing address for IA 1040, 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 IA 1040. Sign and date it — an unsigned paper return isn't considered filed.

  3. 3

    Address the envelope exactly

    Use Iowa Income Tax – Document Processing at the address for your situation, shown above. Iowa uses the same address whether or not you enclose a payment — attach an IA 1040V voucher if you owe.

  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 Iowa state tax return?

Mail it to Iowa Income Tax – Document Processing, PO Box 9187, Des Moines, IA 50306-9187 — Iowa uses this one address regardless of whether you owe or are due a refund.

Does it matter which Iowa address I use?

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

What do I make my check payable to?

The "Iowa Income Tax – Document Processing". Write your Social Security number and the tax year on the check or money order.

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

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

Yes. Upload your completed, signed IA 1040 and PostPal prints it and mails it to Iowa Income Tax – Document Processing, PO Box 9187, Des Moines, IA 50306-9187 (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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