Unfortunately, if your Mac is old and cannot update to OS 10.14, you are not able to use TurboTax installed on your computer this year. You can use TurboTax online from any computer with a web browser. You can call customer support and ask to have the purchase price of the CD applied to your online account. Or, you can return the CD where you purchased it. If the vendor will not accept a return, you can return the CD within 60 days to TurboTax using the moneyback guarantee.
