Here's how to enter the amount you paid with the extension into TurboTax.

• Click the Federal Taxes tab. (In TurboTax Home & Business click the Personal tab.)
• Click Deductions & Credits.
• Click "I'll choose what I work on" or "Jump to a full list."
• On the screen "Your 2016 Deductions & Credits," scroll down to the section "Estimates and Other Taxes Paid."
• Click the Start, Update, or Revisit button for "Other Income Taxes."
• Under the heading "Payments with Extension," click the Start, Update, or Revisit button for "Payment with 2016 federal extension."