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Common Tax Topics

Changes for Pass-Through Entities for 2024

Picture of Elk in Colorado Mountains

House Bill 23-1277 made several changes for pass-through entities for tax years 2024 and later. These changes resulted in the elimination of form DR 0108 and affected nonresident composite returns and form DR 0106K.

Changes for Pass-Through Entities Information

Tax Fraud Prevention

Scan Alert Fraud Tax Tips

View our most recent publication to read detailed information regarding fraud prevention tips for this tax season. 

Tax Fraud Prevention Tips

Colorado Child Tax Credit

Child Tax Credit written on sticky note next to mother and child cut outs

New in 2023: A Child Tax Credit for Coloradans. Colorado Residents who qualify for the Federal Child Tax Credit may also qualify for a refundable State Credit.

Colorado Child Tax Credit Information

Rulemaking Announcements

Request for Public Input – Colorado Income Tax Withholding

The Colorado Department of Revenue, Division of Taxation, is seeking public input regarding drafts of the following new and amended rules. The Department has prepared the following drafts to aid in the process of soliciting public comments.

Adopted – Alternative Transportation Options Income Tax Credit Rule

On June 2, 2025, the Colorado Department of Revenue, Division of Taxation, adopted the Alternative Transportation Options Income Tax Credit Rule. The adoption was based on the public rulemaking hearing held on January 30, 2025.

Notice of Proposed Rulemaking – Miscellaneous Tax Rules

The Colorado Department of Revenue, Division of Taxation, will hold a public rulemaking hearing on the tax rules listed below at 10:00 a.m. on July 10, 2025.
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Online Filing Tools

Revenue Online (ROL)

File state taxes and manage your state tax account

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ROL Help

Sales & Use Tax System (SUTS)

State-administered and home rule sales and use tax filing

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Geographic Information System (GIS)

Look up sales and use tax rates by address or map location

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