Every year volunteers from the AARP assist people (by appointment, no charge) in preparing and filing their taxes.
Forms and Instructions can be downloaded year round from the IRS.
Colorado IRS website1999 BroadwayDenver, CO 80202Monday-Friday 8:30am - 4:30pm303-446-1675
Colorado Dept. of Revenue Taxation Division WebsiteDenver Service Center1375 Sherman St., Denver, CO 80261Monday-Friday 8am - 5pm303-238-SERV (7378)