June 4, 2019 10:31 PM
You cannot deduct federal back taxes anywhere. The IRS does not allow it, unfortunately. However, you can deduct state back taxes, they are part of your itemized deduction.
- Federal Taxes
- Deductions and Credits
- Scroll down to Estimates and Other Taxes Paid
- Select Other Income Taxes
- Select payments for 2015 or prior year state or local income taxes paid in 2016