@jgereige Make sure that the billing address for the credit card you are using is the exactly the same as the Mailing Address you have entered on your tax return. Click on My Info on the left side of the online program screen. Edit your Mailing Address if necessary. If the billing address is not the same as your mailing address, then after changing the Mailing Address and paying with the credit card, go back to My Info and change your Mailing Address back to the original address you used.
