DR 0900: Individual Income Tax Payment Form (2025)
Colorado · Colorado DOR · Used for tax years 2025
Colorado Form DR 0900 accompanies a mailed check or money order for 2025 individual income tax. It records your identifying information and payment amount.
Who files this form
Use the 2025 DR 0900 to accompany your payment if you filed your Colorado individual income tax return electronically and want to pay by check.
Do not file this form if you paid electronically or do not owe a payment.
When it's due
For the 2025 calendar tax year, the payment form lists a due date of April 15, 2026.
What you'll need
To complete and mail DR 0900, have:
- Your Social Security number or ITIN and full name.
- Your spouse’s Social Security number or ITIN and name, if filing jointly.
- Your mailing address.
- Your payment amount.
- A check or money order payable to the “Colorado Department of Revenue.”
Keep a copy of the money order or note the check number with your tax records.
How to file
The Department strongly recommends filing through Revenue Online (Colorado.gov/RevenueOnline) or another electronic filing method and paying electronically. If you pay electronically, do not file DR 0900.
To pay by mail:
- Complete DR 0900 with your identifying information, address and payment amount.
- Make your check or money order payable to the “Colorado Department of Revenue.” Round your payment to the nearest dollar.
- Write your Social Security number or ITIN and “2025 DR 0104” on the memo line.
- Make sure the payment amount matches the amount entered on DR 0900.
- Enclose your payment with the full page of DR 0900. Do not staple or attach the payment, and do not cut the form.
Mail to:
Colorado Department of Revenue
Denver, Colorado 80261-0008
No street address is required. Do not send cash. If you already filed electronically, do not submit DR 0104 again.
Common mistakes
- Filing DR 0900 when you paid electronically or owe no payment.
- Sending DR 0104 again after filing electronically.
- Entering a payment amount that does not match your check.
- Forgetting to round the payment to the nearest dollar.
- Leaving your Social Security number or ITIN and “2025 DR 0104” off the check or money order.
- Sending cash, stapling or attaching the payment, or cutting the form instead of returning the full page.
- Forgetting to keep a money order copy or note the check number with your tax records.
Questions people ask
Do I need DR 0900 if I paid electronically?
No. Do not file this form if you paid electronically or do not owe a payment.
Who should I make the check or money order payable to?
Make it payable to the “Colorado Department of Revenue.” Write your Social Security number or ITIN and “2025 DR 0104” on the memo line.
Does the mailing address need a street address?
No. The address and ZIP code are exclusive to the Colorado Department of Revenue, so a street address is not required.
Can the State process my check electronically?
Yes. The State may convert your check to a one-time electronic banking transaction. Your account may be debited as early as the day the State receives it. If converted, your check will not be returned.
What happens if my check is rejected for insufficient or uncollected funds?
The Department of Revenue may collect the payment amount directly from your bank account electronically.