You can enter the estimated taxes you paid by following these steps:
- In TurboTax, open your tax return
- Click on Federal in the left-hand column,
- Choose 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 Taxes
- On the next page, click Start next to Federal estimated taxes for 2017 (form 1040ES) ( There is also a section for your state taxes)
