Investors & landlords

The depreciation period of 27.5 years will not be adjusted, because it's very difficult to allow for adjustments when property is rental, then personal use, then back to a rental. You must keep track of all depreciation used on the property. 

If you use a 2024 for date placed in service you will receive the correct depreciation this year based on the month. Then next year you will be able to enter the correct prior year depreciation accumulated when you come to the screen with the accumulated depreciation, in an editable field, for all prior years you can enter the correct figure.  For the current year, when you enter 2024 as date placed in service it will not give you this screen because TurboTax does not know you have prior years. No editing is necessary for 2024. 

The chart in IRS Publication 946 (printed below for your convenience) and your 2015 tax return will provide the total of all accumulated depreciation used before 2024.