That was probably an amount for an extension payment.
To enter, change or delete a payment made with an extension request (Federal, State, Local) -
• 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 Other Income Taxes, click on the start or update button
On the next screen select the type of extension payment made and click on the start or update button
