Tax forms for Colorado and US taxes may be found online year round via the links below:

Colorado

• Current year filing forms for Colorado. Forms in PDF.
• Colorado Department of Revenue, Taxation Division. Sections are: File; Pay; Refund; Manage My Tax Account; Education and Legal Research. Alpha Index; Quick Answers.
• Forms in Number Order.
• E-File Options are under type of Tax File.

Federal, Other States

• Choose the Simplest Tax Form for Your Situation.
• Forms and Instructions (PDF).
• Filing Your Taxes. Internal Revenue Service (IRS). Includes Your Filing Options.
• Prior Year Products. Page has links to first 25 of over 15,600 files/documents from various years. Searchable by Product Number; Title, and Revision Date. Documents are in PDF format.
• Publications Online. IRS. In html and PDF.
• State Tax Forms & Filing Options. Federation of Tax Administrators.