Colorado DOR Adopts Amended Rule on Sales Tax Filing Schedules

March 12, 2026, 8:13 PM UTC

The Colorado Department of Revenue (DOR) adopted amendments to a rule on sales tax filing schedules. The rule prescribes the schedules and conditions for their modification, including monthly, quarterly, and annual filing options based on a retailer’s average monthly Colorado sales tax collection. [Colo. Dep’t of Revenue, Reg. Section 39-26-109, 02/27/26 Code of Colo. Reg.]

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