The only possible way to file a prior year return with TurboTax is to purchase the CD/Desktop version of the software at https://turbotax.intuit.com/personal-taxes/past-years-products/ then download it and install it on your computer. Make ******SURE***** you click the "File 2017 Taxes" link first. Otherwise, if you purchase the program for the wrong tax year, you own it.
Note that TurboTax Business (different from Home & Business) can not be used in any way, form or fashion to complete a personal 1040 tax return. It can only be used to complete a tax return for a non-living, non-breathing, separately taxable entity such as a C-Corp, S-Corp, Estate or Trust. Additionally, TurboTax Business is for the Windows operating system *ONLY*. It is not and never will be available for any other operating system or mobile device.
All other versions of TurboTax can be installed on Windows or MAC just fine. If using a MAC, read the system requirements BEFORE you pay for it. Newer versions of the program will flat out not work on older versions of the MAC operating system.
