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The Colorado Department of Revenue recognizes that most taxpayers want to comply with state tax laws. The Taxation Division provides many ways to learn about Colorado taxes including in-person business tax classes, informational and instructional videos, guidance publications, tax regulations, letter rulings and much more. We have organized our most commonly used education and research resources on this web page.
Latest Taxation Division video:
Colorado Department of Revenue Forms
Colorado Department of Revenue Reference Publications
Sales Tax Changes Webinar: This class is for all businesses and business tax professionals. It covers the sales tax changes that take effect on June 1, 2019. Visit our Public Tax Class Calendar to sign up for a live webinar.
Business Tax Class: This class is for Colorado businesses and business tax professionals. It covers information on sales tax, special tax, special events, consumer use tax, wage withholding, licensing and filing tax returns. Classes are offered monthly in each of our Taxpayer Service Centers located in Fort Collins, Denver, Colorado Springs, Grand Junction and Pueblo. Visit our Public Tax Class Calendar to find and register for a live class near you.
These videos contain detailed information to address taxpayers' frequently asked questions and common filing errors.
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Revenue Bulletin 18-01: ALL PRIOR REVENUE BULLETINS RESCINDED