Your estimated tax payments will serve as a credit against your Federal tax liability and have to be entered on your tax return.
You can enter estimated taxes you paid by following these steps:
- In TurboTax, open your tax return
- Click on Federal in the left-hand column, then Deductions & Credits on top of the screen
- Scroll down to All tax breaks, locate the section named Estimates and Other Taxes Paid and click Show more
- Click on Start next to Estimated Tax Payments
- On the next page, click Start next to Federal estimated taxes for 2020 (form 1040ES)