TurboTax 2015 is no longer available or supported by TurboTax. TurboTax only supports their software for the current tax filing season (2019 as of the date of this post) and 3 years back.
While you may be able to purchase TurboTax 2015 from a third party, you will *not* be able to get the "REQUIRED" corrections and updates to the program. This means that a tax return prepared with TurboTax 2015 will probably be wrong, and TurboTax will *NOT* honor their 100% accuracy guarantee on their program for 2015 and older.
Additionally, if upon filing your 2015 tax return you will be due a refund, you will *NOT* get it. The IRS has a three year statute of limitations on refunds. However, if you will owe the IRS then you are required to pay what you owe. Ironic, but that's the law.
