Intuit is trying to charge my credit card, although I have not purchased any of their products with my credit card. I purchased Turbotax online but paid for it up front.

If you purchased TurboTax online you would have had to pay using a credit card unless you purchased in store.

Thank you for choosing TurboTax.

I purchased Turbotax from Costco on April 2nd, but when I finished entering all information I was prompted to give credit card information and was subsequently charged again by TurboTax a cost of $47.46 to my credit card. The activation code that I used was XXXXXXX

@Trabolin3  It appears that the CA TY2024 TurboTax Online Coupon 8 Deluxe Retail activation code is active and connected to your account. Make sure you are using the same account to prepare your return. We advise you to confirm that the online Deluxe edition you are using is not an upgraded version, which is why you are being charged more. 

Since this is a shared public platform, we advise against posting any codes or private information here. Therefore, the posted activation code has been removed. 

Thank you for choosing TurboTax.