How to cancel subscription?
If you want to cancel the Advantage subscription see the procedure in this TurboTax support FAQ - https://ttlc.intuit.com/community/downgrading/help/how-do-i-cancel-my-turbotax-advantage-subscriptio...
If you missed the cancelation deadline for this year's TurboTax product, simply wait until you receive your CD or download, then submit an online refund request within 60 days of receiving your product.