To change your billing information, click on the “My Household” link on the top right of the website, then on “Update Plan or Billing Information” in the left navigation menu.
Here you can enter your new credit card information. If you need to change your payment option from monthly to annual, or vice versa, then your existing subscription will be cancelled and a new one will be created. You won’t lose any time with your current subscription or any data you’ve entered into Goodbudget.