Colorado DOR Proposes Amending Regulation on Sales Tax Filing Schedules

December 19, 2025, 4:58 PM UTC

The Colorado Department of Revenue (DOR) proposed amending a regulation regarding sales tax filing schedules. The proposed rule outlines procedures for requesting alternate filing schedules and conditions under which the DOR may modify a retailer’s filing frequency. [Colo. Dep’t of Revenue, Proposed Reg. Section 39-26-109, 12/15/25]

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