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Where to mail your Illinois state tax return

Mailing your Illinois Form IL-1040 depends on your situation: Return with payment goes to Illinois Department of Revenue, PO Box 19027, Springfield, IL 62794-9027, while Return without payment goes to Illinois Department of Revenue, PO Box 19041, Springfield, IL 62794-9041. Pick the address that matches your return below, sign and date the form, and mail it before the deadline.

Return with payment

Illinois Department of Revenue
PO Box 19027
Springfield, IL  62794-9027

Use this address for a paper Form IL-1040 where return with payment.

Verified September 2026tax.illinois.gov

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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 Illinois tax return — $5

$5 flat · postage included · no account needed

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

Other mailing addresses

Return without payment

Illinois Department of Revenue
PO Box 19041
Springfield, IL  62794-9041

Use this address for a paper Form IL-1040 where return without payment.

Your name
Your return address

Illinois Department of RevenuePO Box 19027Springfield, IL 62794-9027

Your letter, printed and mailed for you.

Key facts

  • Illinois splits paper Form IL-1040 returns by address: return with payment vs. return without payment — mailing to the wrong one can delay processing.
  • Make checks or money orders payable to the "Illinois Department of Revenue".
  • 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

    Illinois uses a different address depending on whether you're enclosing a payment: Return with payment; Return without payment. 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 IL-1040. Sign and date it — an unsigned paper return isn't considered filed.

  3. 3

    Address the envelope exactly

    Use Illinois Department of Revenue at the address for your situation, shown above.

  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 Illinois state tax return?

It depends on whether you're enclosing a payment. For "return with payment," mail it to Illinois Department of Revenue, PO Box 19027, Springfield, IL 62794-9027. For "return without payment," mail it to Illinois Department of Revenue, PO Box 19041, Springfield, IL 62794-9041.

Does it matter which Illinois address I use?

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

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

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

Yes. Upload your completed, signed Form IL-1040 and PostPal prints it and mails it to Illinois Department of Revenue, PO Box 19027, Springfield, IL 62794-9027 (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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