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