The Tax Division site offers detailed answers and helpful resources. A-Z Directory Forms Tax Information Revenue Online Refunds Tax Credit Navigator Estimated Payment Copy of Returns Colorado Individual Income Tax Guide Property Tax/Rent/Heat Credit (PTC) Rebate TABOR Protest Process Didn't find an answer? Name and Date of Birth First name Last name Date of Birth Email Address Email Address Confirm email Daytime number Phone Last four digits of your social security number Colorado Account Number Description of Concern Send question Leave this field blank Replies are sent within three business days.
