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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DR 0158-I - Extension Payment for Colorado Individual Income Tax

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Colorado offers an automatic six-month extension to file your income tax return if you cannot submit your return by the April 15 due date. This means that you can file your return by October 15. While there is an extension to file, there is not an extension to the payment due date. Penalty and interest are assessed if certain payment criteria are not met.