How can I indicate on my state return that I paid the tax due already on my state's tax portal?

Enter your payment as estimated taxes paid to the state for 2023.

Enter State payment 2023:

1. Open your return.
2. Click on Federal tab.
3. Click on Deductions & Credits.
4. Click on Edit/Add to right of Estimated Tax Payments
5. Click on Start/Revisit to the right of State estimated taxes for 2023.
6. Enter State, Date, and Amount paid, then Continue & Done.

Additional question:

In this case, assuming the state return shows a tax due, does TT give me the option to skip entering payment details when filing the return?

Thanks

No, but you can select Pay by Check and skip entering any payment info.   Since I pay any tax due directly to the IRS or state, I always choose pay by check.  TurboTax doesn't track your tax payments, only your payment of TurboTax fees.  

I disagree with the answer to enter it as an estimated payment.   All you have to do is say you will mail a check and then don't.  The payment will match up to your return.  That's normal.  Your return should always say the end result of your return.  Like if you paid it after filing your return won't update in Turbo Tax or on the copy you print out.    

DawnC,

Thank you very much.  Is that an option if I file electronically?

Of course.  

Thank you VolvoGirl,

I was just advised not to enter it as an estimated payment by the state tax support line also.

And to wait for the payment to match up to the return later.

Good.  If you had entered it as estimated payment the state would send you a letter adjusting it off and saying you owe.