No, payment of federal income tax is not deductible. You would enter the payment in the estimated taxes section. Please see the screen shot below.
Click
on Federal Taxes (Personal using Home and Business)
• Click
on Deductions and Credits
• Click
on I'll choose what I work on (if shown)
• Scroll
down to Estimates and Other Taxes Paid
• On
Estimates, click on the start or update
button