How to add credit to Google Voice account. In case you already have a Google Voice account, you can follow the instructions below to add credits to it. To clarify, when you are prompted to insert dollar bills, you should not insert them into your Google Voice account. Instead, you should insert the debit or credit card that you use to pay for services with. Buy Google Voice Accounts. If you do not have one yet, you may use the links below to sign up for Google Voice using your debit or credit card.
