Colorado business filing due dates
The Colorado deadlines Ordexly tracks for Oct 2026 to Oct 2027. Every date links to the agency page it was checked against (last checked ). Which ones apply to a business depends on its registrations and filing frequency, so confirm with the agency.
Annual report based on formation date
Colorado Periodic Report (end of filing window). Colorado periodic report: may be filed from two months before through two months after the periodic report month without penalty (coloradosos.gov Periodic Reports FAQ Q4; C.R.S. 7-90-501). Ordexly assumes the report month is the formation month and shows the last weekday of the second month after it. Check 'Periodic report month' on the entity's SOS summary page. Official source.
Ordexly works out this date for each business from its formation month.
Sales & use tax
| Due | Deadline | Source |
|---|---|---|
| Colorado DR 0100 Retail Sales Tax (monthly) October 2026 | official source | |
| Colorado DR 0100 Retail Sales Tax (monthly) November 2026 Moved from Sun, Dec 20 (weekend). | official source | |
| Colorado DR 0100 Retail Sales Tax (monthly) December 2026 | official source | |
| Colorado DR 0100 Retail Sales Tax (quarterly) Q4 2026 | official source | |
| Colorado DR 0100 Retail Sales Tax (monthly) January 2027 Moved from Sat, Feb 20 (weekend). | official source | |
| Colorado DR 0100 Retail Sales Tax (monthly) February 2027 Moved from Sat, Mar 20 (weekend). | official source | |
| Colorado DR 0100 Retail Sales Tax (monthly) March 2027 | official source | |
| Colorado DR 0100 Retail Sales Tax (quarterly) Q1 2027 | official source | |
| Colorado DR 0100 Retail Sales Tax (monthly) April 2027 | official source | |
| Colorado DR 0100 Retail Sales Tax (monthly) May 2027 Moved from Sun, Jun 20 (weekend). | official source | |
| Colorado DR 0100 Retail Sales Tax (monthly) June 2027 | official source | |
| Colorado DR 0100 Retail Sales Tax (quarterly) Q2 2027 | official source | |
| Colorado DR 0100 Retail Sales Tax (monthly) July 2027 | official source | |
| Colorado DR 0100 Retail Sales Tax (monthly) August 2027 | official source | |
| Colorado DR 0100 Retail Sales Tax (monthly) September 2027 | official source | |
| Colorado DR 0100 Retail Sales Tax (quarterly) Q3 2027 | official source |
Payroll & withholding
| Due | Deadline | Source |
|---|---|---|
| Colorado wage withholding (quarterly) Q3 2026 | official source | |
| Colorado wage withholding (quarterly) Q4 2026 | official source | |
| Colorado wage withholding (quarterly) Q1 2027 | official source | |
| Colorado wage withholding (quarterly) Q2 2027 | official source |
Unemployment / reemployment
| Due | Deadline | Source |
|---|---|---|
| Colorado UI wage report / premiums Q3 2026 | official source | |
| Colorado UI wage report / premiums Q4 2026 | official source | |
| Colorado UI wage report / premiums Q1 2027 | official source | |
| Colorado UI wage report / premiums Q2 2027 | official source |
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Nearby: Arizona due dates · Kansas due dates · Nebraska due dates · New Mexico due dates · Oklahoma due dates · Utah due dates · Wyoming due dates
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