To remove Earned Income Credit from an amendment:
If you no longer qualify, and TurboTax is giving you EIC anyway, then you can delete the EIC form by clicking My account > Tools > Delete a form. Look for the Earned Income Credit Worksheet.
If you are qualified to receive EIC, then TurboTax won't let you delete this credit, even if you don't want it, without having serious impact on other parts of your return.
These are the qualifications
for EIC.
