Investors & landlords
If you started renting your home in May 2023, and entered that date as 'Date Placed in Service', when asked later 'if the home was rented all year', say YES, as it is referring to 'all year from the date available to rent.'
In other words, there was no personal use after the 'date placed in service'.
TurboTax will calculate a 'Business Use %' based on the May date, and apply that to the 2023 expenses, unless you change that for any particular expense. You can see that on Schedule E.
If you use TurboTax Desktop, in Forms mode, on Schedule E, you can indicate a Business Use % and TurboTax will calculate accordingly. Otherwise, the default is 100% rental expense.
