Section 179 deductions are not Allowed on rental property. You cannot claim the section 179 deduction for property held to produce rental income. This would include any rental assets along with capital improvements. To qualify for the section 179 deduction, your property must have been acquired for use in your trade or business. If you took a section 179 for rental property assets, you should file an amended return for that year.
When you enter an asset placed in service in a prior year in TurboTax, the program will calculate both prior year and current year depreciation. You have to indicate the same date of service that was used originally. You will also be given an opportunity to adjust the calculated prior year depreciation so that it agrees with your 2017 depreciation schedule. It will not allow you enter current or prior Section 179 for assets that do not qualify.
