Companies doing business in Colorado should take advantage of the Colorado Department of Revenue’s Sales and Use Tax Lookup page to accurately determine company sales and use tax rates. The page provides resources such as the DR 1002 document that details sales and use tax rates for all Colorado cities, counties, and special districts, a spreadsheet that combines the tax rates in the DR 1002 document with location filing or jurisdiction codes from the DR 0800 document into a single lookup tool for filing sales tax, and links to electronic address database providers certified by the Department of Revenue as accurate. The Sales and Use Tax Lookup page is regularly updated, serving as an excellent resource for current and correct Colorado tax rates. The information includes both state administered and home rule authority information.