DR 0900C: C Corporation Income Tax Payment Form (2025)
Colorado · Colorado DOR · Used for tax years 2025
Colorado Form DR 0900C is the 2025 C Corporation or Exempt Entity Income Tax Payment Form. It accompanies a check or money order and identifies the entity, tax period, and payment amount.
Who files this form
DR 0900C is the 2025 C Corporation or Exempt Entity Income Tax Payment Form. It must accompany your payment if you filed electronically and want to pay by check.
Do not return this form if you paid electronically or no payment is due.
What you'll need
To complete the payment form, have:
- Your tax period beginning and ending dates.
- Your Federal Employer Identification Number (FEIN) and Colorado Account Number.
- Your corporation name and 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 or another electronic filing method and paying electronically. Do not return DR 0900C if you paid electronically.
To pay by mail:
- Complete DR 0900C with your tax period, identifying information, address, and payment amount.
- Make your check or money order payable to the “Colorado Department of Revenue.” Round the payment to the nearest dollar.
- Write your Colorado Account Number or FEIN and “2025 DR 0112” or “2025 DR 0990” on the payment's memo line.
- Make sure the payment amount matches the amount entered on the form.
- Enclose the payment with the full page of DR 0900C. Do not cut the form, staple or attach the payment, or send cash.
Mail to:
Colorado Department of Revenue
Denver, Colorado 80261-0008
No street address is required because this address and ZIP code are exclusive to the Department.
Common mistakes
- Sending DR 0900C when no payment is due or when you have already paid electronically. The form says not to return it in either case.
- Entering an amount on the form that does not match the check. The amounts must be the same, and the payment should be rounded to the nearest dollar.
- Leaving off your Colorado Account Number or FEIN and “2025 DR 0112” or “2025 DR 0990” from your payment.
- Sending cash, attaching or stapling the payment, or cutting the form. Enclose the payment and return the full page.
- Submitting DR 0112 after you have already filed and paid electronically. The printed instructions say not to do this.
- Forgetting to keep a copy of your money order or record your check number with your tax records.
Questions people ask
Do I need to send DR 0900C if I paid electronically?
No. Do not return this form if you paid electronically or no payment is due.
What should I write on my check or money order?
Make it payable to the “Colorado Department of Revenue.” Write your Colorado Account Number or FEIN and “2025 DR 0112” or “2025 DR 0990” on the memo line.
Does the mailing address need a street address?
No. Mail payments to Colorado Department of Revenue, Denver, Colorado 80261-0008. The form says this address and ZIP code are exclusive to the Department, so no street address is 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 the check. If converted, the check will not be returned.
What happens if my check is rejected for insufficient or uncollected funds?
The Department may collect the payment amount directly from your bank account electronically.