State Tax Day - Current, S.10, Colorado—Sales and Use Tax: Bulk Address Lookup Feature Temporarily Suspended, (Sep 29, 2026)
Colorado will temporarily pause its Sales and Use Tax System (SUTS) bulk address lookup feature beginning September 29, 2026, because system utilization has far exceeded statutory budget allocations. The core SUTS filing, remitting, and payment portal and the single-address geographic information system lookup software remain active, operational, and free for all businesses and taxpayers. Taxpayers can continue using the portal to look up accurate sales tax rates for any individual address across Colorado’s municipal, county, state, and special district tax jurisdictions in real time. Colorado plans to re-enable the bulk spreadsheet upload feature on January 1, 2027, in a managed capacity.
News Release, Colorado Department of Revenue, September 25, 2026