IL-1040-V: Payment Voucher for Individual Income Tax (2025)
Illinois · Illinois DOR · Used for tax years 2025
Form IL-1040-V is the 2025 Illinois Individual Income Tax payment voucher for payments sent by mail. It records your identifying information and the amount you are paying.
Who files this form
Use the 2025 Form IL-1040-V if you choose to pay the amount you owe on your Illinois Form IL-1040, Individual Income Tax Return, by mail. Complete the voucher and send it with your payment.
When it's due
For tax year 2025, your payment is due April 15, 2026.
What you'll need
To pay by mail, prepare a completed IL-1040-V voucher and your check. The voucher asks for:
- Your Social Security number and your spouse’s Social Security number.
- Your first name and initial, your spouse’s first name and initial, and your last name.
- Your street address, city, state, and ZIP code.
- Your payment amount.
Write your Social Security number(s) on your check.
How to file
Pay by mail: Complete the IL-1040-V voucher. Make your check payable to ILLINOIS DEPARTMENT OF REVENUE, write your Social Security number(s) on the check, and mail the voucher with your payment to:
ILLINOIS DEPARTMENT OF REVENUE
SPRINGFIELD IL 62726-0001
Pay electronically: Visit mytax.illinois.gov. The form encourages electronic payment whenever possible.
Common mistakes
- Redacting Social Security numbers: The form warns that this can cause processing delays.
- Leaving Social Security numbers off the check: The voucher tells you to write your Social Security number(s) on your check.
- Omitting required information: The form states that failure to provide information could result in a penalty.
Questions people ask
What is Form IL-1040-V used for?
It is the payment voucher to send with your payment if you choose to pay the amount owed on Form IL-1040 by mail.
Can I pay electronically instead?
Yes. Visit mytax.illinois.gov to pay electronically. The form says electronic payment avoids mailing delays, saves a trip to the post office and the price of a stamp, and provides immediate payment confirmation.
Who should I make my check payable to?
Make your check payable to ILLINOIS DEPARTMENT OF REVENUE.
Should I hide my Social Security number on the voucher?
No. The form says not to redact Social Security number(s), because doing so can cause processing delays. It also tells you to write your Social Security number(s) on your check.