Please remember that you must claim the state sales tax refund (TABOR refund) when filing your state income tax return. If you claimed a 2023 refund, the TABOR refund will be combined and issued out with your refund. Unlike the 2022 Colorado cashback, no separate check will be issued.
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Contact the Collections Section
Phone: (303) 205-8291
Fax: (303) 866-2037
Hours of Operation:
Monday-Thursday: 8:00 a.m. to 4:30 p.m.
Friday: 9:00 a.m. to 4:30 p.m.
Mailing Address:
Colorado Department of Revenue
Attn: Collections
P.O. Box 17087
Denver, CO 80217-0087