If there is an error concerning your college tuition credit on your 2021 state tax return, you may have to submit a amended return to the state. As it is for the 2021 tax year, it must be sent through the mail. To do so, you can revisit your 2021 return on TurboTax. For further guidance on amending a previous year's return, refer to the help articles provided by TurboTax. Additionally, information on how to reach out for support can also be found.