I accidentally applied my 2024 estimated payment to a balance payment type. How can i change this to an estimated payment when I file my 2024 tax year?

I'm not sure of the question, but you can enter 2024 estimated payments under Deductions & Credits.

Open TurboTax

1. Under Federal
2. Select Deductions and Credits
3. Scroll down the list to Estimates and Other Taxes Paid
4. Select Estimated Tax Payments from the drop down
5. On the new drop down choose Federal estimated taxes for 2024 (Form 1040-ES)
6. Did you pay federal estimated taxes for 2024? - YES

Where do I enter my estimated tax payments?

I make quarterly estimated payments to the fed and one of my payments was accidently catagorized as a balance payment to 2024, when i should have catagorized it as "estimated" payment.

Will the IRS credit my estimated payment with the accidental "balance' payment? I assume they will, but want to make sure before I file. 

You would need to contact the IRS at 800-829-1040 to get the payment straightened out and applied properly.