Video Library | Department of Revenue - Taxation

The Department of Revenue is processing 2023 income tax returns. For more information, please read the Department's announcement.

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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

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

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)

Estimated Income Tax Penalty

How to Calculate Estimated Tax Payments and Penalties

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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

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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

General Navigational Walkthrough

How to located your EFT Number in Revenue Online

How to register for EFT (Electronic Funds Transfer) using Revenue Online

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)

Excel Filing Instructions

How to File Using XML

How to Make a Payment

SUTS Presentation

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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.