Video Library | Department of Revenue - Taxation

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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

Amending a Sales Tax Return in Revenue Online

Vendor/Service Fee Information

Income Tax Videos

Tips for Setting up An Account

Do you owe on your Colorado State Income Tax?

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)

Withholding Videos

Colorado Wage Withholding Changes for 2020

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

Filing Marijuana-Related Sales Tax Returns in Revenue Online

Colorado Motor Carrier's Association (CMCA) IFTA Webinar

Revenue Online (ROL) Videos

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

Tips for Setting Up Your 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

General Navigational Walkthrough

Sales and Use Tax System (SUTS) Videos

New User Registration

How to Add an Existing Business

How to Apply for a Colorado Account Number(CAN)

Coming Soon- Excel Filing Instructions

How to File Using XML

How to Make a Payment

Can't find what you're looking for?

Visit the Revenue Online Help web page for more how-to information. If you are looking for additional training resources, visit the Tax Education & Training web page.