You have to file an amended return to claim the tuition credit. An amended return has to be filed on a special form, Form 1040X. It cannot be e-filed. You have to print it, sign it, and file it by mail. It takes the IRS up to 16 weeks to process an amended return.
Go to the following link for instructions to amend a 2018 tax return that you filed with TurboTax.
How do I amend a 2018 return in TurboTax?
Your tax return is the form you send to the government that shows your income and calculates your tax. The money the government sends back to you is your refund.
