Businesses | Department of Revenue - Taxation

All State Offices will be closed on Thursday, June 19, in observance of Juneteenth.

Tax Types

Sales & Use Tax

Business Income Tax

Withholding Tax

Excise & Fuel Tax

Property Taxation (DOLA)

Business E-File Options

Revenue Online (ROL)

Sales & Use Tax System (SUTS)

Revenue Online Sales Tax Spreadsheet

Additional Tax Information

Climate Friendly Tax Incentives

Resources for Businesses

Cover of the Colorado Sales Tax Guide

Guidance Publications

Virtual Training Participant Taking Notes

Tax Education Webinars

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Watch How-To Videos

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Sign Up for Email Alerts

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Tax Fraud Prevention