Get your taxes done using TurboTax

Enter withholding on forms other than a W2 or 1099R under

Federal Taxes (or Personal for H&B)

Deductions and Credits

Then scroll way down to Estimates and Other Taxes Paid

Other Income Taxes - Click the Start or Update button

Next page scroll down to bottom section Other Income Taxes Paid

Click Start or Update by Withholding not already entered on a W-2 or 1099