The forms listed below are only valid for tax years 2014 and prior. When filing for a prior year, be sure to only use the versions of forms that apply to that tax year. Additionally, prior year forms cannot be used for the current tax year.
C Corporation Income
Fiduciary Income
Individual Income
Partnership & S Corporation Income
If you are looking for a prior year for a tax year that is not listed above, please visit the Forms by Tax Type web page to search for a form. If you need additional forms assistance, please email DOR_TaxpayerService@state.co.us.