Deductions & credits

You should be able to switch from the standard deduction to the itemized deduction in the program.

Complete the Deductions & Credits section of the program.  Continue until you land on the screen showing that you are receiving the Standard Deduction.  Click on the box Change my deduction.  This should allow the itemized deductions to be used and you will see the meter at the top of the screen change.

 

If for some reason this does not change your deduction method, then click on Forms in the upper right on a TurboTax for Windows program.

When in Forms mode open the the Federal Information Worksheet (Info Wks on the left side of the screen) if not already open.  Scroll down to Part VI of the worksheet.  Check the box labeled Check this box if you are itemizing for state tax or other purposes...