The program will default to the standard deduction for 4 reasons:

1) you are filing separately and your spouse uses the standard deduction

2) the standard deduction is higher

3) you forced the standard deduction option

4) using the standard deduction will get you the same bottom line on the return as the itemized deduction

How do I change from the standard deduction to itemized (or vice-versa)?

https://ttlc.intuit.com/questions/1900142-how-do-i-change-from-the-standard-deduction-to-itemized-or...