You enter estimated tax payments made to both federal AND state within the federal interview. You'll enter these payments under the "Deductions and Credits" section of your TurboTax interview. See the instructions in the TurboTax FAQ I'm linking below.
Where do I enter my estimated tax payments?
*** I am NOT a tax expert. I am a seasoned TurboTax user, and volunteer to provide assistance to TT users. Nothing I post is to be considered TAX ADVICE; I bear no legal liability for responses.***
