Video Library | Department of Revenue - Taxation

Looking for your refund? Check the status of your income tax refund online — no phone call needed.

Sales Tax Videos

How to File Using Revenue Online

How to File Using a Paper Form

How to File Special Event Sales Tax Using Revenue Online

How to Renew Your Sales Tax License Using Revenue Online

Amending a Sales Tax Return in Revenue Online

Vendor/Service Fee Information

Retail Delivery Fee Return and Payment Using Revenue Online

What is the Retail Delivery Fee?

Income Tax Videos

How to Set Up An Individual Tax Account in Revenue Online

How to Make an Individual Income Tax Payment

Income Tax Payment Plans Using Revenue Online Quick Links (No Login Required)

Income Tax Payment Plans Using Revenue Online (Logged In)

Estimated Income Tax Penalty

How to Calculate Estimated Tax Payments and Penalties

Withholding Videos

Filing Frequencies & Due Dates

How to Calculate Colorado Wage Withholding

How to File Colorado Wage Withholding Returns

Excise & Fuel Tax

IFTA - How To File Using Revenue Online

Colorado Motor Carrier Association (CMCA) IFTA Webinar

Revenue Online (ROL) Videos

Retail Delivery Fee Return and Payment Using Revenue Online

How to Register in Revenue Online for Out-of-State Retailers

How to Set Up A Revenue Online Account

Verify Your Colorado Sales Tax License Number

How to File a Protest

Username Recovery and Password Reset

Introducing DORi

Requesting a Letter ID

Sales and Use Tax System (SUTS) Videos

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Visit the Revenue Online Help web page for more how-to information. For more training resources, visit the Tax Education & Training web page.