How do I amend a 2023 tax?

See this TurboTax support FAQ for amending a tax return - https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-return/amend-change-correct-return-already-filed/L4VjJ9BA2_US_en_US?uid=ld1n99kr

Yes, you can amend your return in TurboTax Online. Normally it's best to wait at least 21 days after your original return is accepted to file an amended return, but since it's getting close to April 15, you need to prepare your amended return now to see if you owe. 
 

Here's how to do it:

1. Sign in to your TurboTax account.
2. On the home screen, scroll down to Your tax returns & documents and select the year you want to amend.
3. Select Amend (change) return, then Amend using TurboTax Online.
4. Carefully follow the directions to start your amendment.
5. Your refund will go to zero, don't worry, that's normal.
6. On the screen OK, let's get a kickstart on your amended return, select the reason(s) you're amending, and Continue.
7. When you reach Here's the info for your amended federal return, select Start next to the info you need to change.
8. Continue through the screens, make the changes you need to make, and carefully answer the remaining questions to finish amending your return.

If you file a state return, you can continue into your state after your federal return is complete.