You will need to enter the assets that were placed in service in previous years as individual assets so that TurboTax can calculate the current year’s depreciation amount.
To manually enter depreciation details in order to match assets previously being depreciated outside of TurboTax, use the steps below as a guide. Assets for depreciation are commonly entered as part of Schedule C or Schedule E. The instructions below are for Schedule C, but the process would be similar for Schedule E.
Can this method for entering previously calculated/reported depreciation be used for rental property depreciation? It appears that there is an Intangible/Other Property choice under Rental Property.