My Colorado state form is giving me a tabor refund but I was not 18 on January 1 2023. My birthdate is correct in the system so why is it calculating the refund?

[JohnW152]

Based on what you input in TurboTax, you're eligible for the TABOR credit.  You don't have to be 18 or older to claim it.

A taxpayer under age 18 can claim the credit if they were a full-year Colorado resident during the tax year, and have a Colorado tax liability or are claiming a refund of Colorado wage withholding from a Form W-2.

According to Line 34, State Sales Tax Refund in the Form DR 0104 Booklet:

If you are a full-year Colorado resident who was under 18 as of January 1, 2023, you may claim the state sales tax refund only if you have a Colorado tax liability (line 14 must be greater than 0) or you are claiming a refund of Colorado wage withholding on a W-2. Your return must be postmarked by October 15, 2024.

[Bolding mine.]

See also the Colorado Department of Revenue's Taxpayer's Bill of Rights (TABOR) Information for more information.