Sign onto this TurboTax website to change your billing information - https://shopping.turbotax.intuit.com/unified/downloads/myaccounts?route=myaccounts&cgcview=billing
Or if you are an Advantage subscriber who receives the TurboTax software each November, sign onto your Advantage account to change your billing information - https://accounts-tax.intuit.com/turbotaxadvantage
Unable to edit credit card info.. Radio button for save not available when I update expiration date. And there is no way to update security code .
Re-enter your Credit Card number and then the new expiration date. The Save button should be active.