How do I change/add new credit card?

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 .

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@tommyg37 wrote:

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 .

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Re-enter your Credit Card number and then the new expiration date.  The Save button should be active.