How am I able to cancel my TurboTax subscription so that I no longer receive the tax program automatically?

Please contact customer service: What is the TurboTax phone number?

Are you on the Advantage auto renew plan?

You can sign into your Turbo Tax Advantage account and under Your Product, select to Remove Product.  Once you remove the recurring product order, the Turbo Tax Advantage subscription will be cancelled as well.

How to cancel Turbo Tax Advantage

https://ttlc.intuit.com/community/downgrading/help/how-do-i-cancel-my-turbotax-advantage-subscription/00/25548