It is a reloadable prepaid debit card, not a credit card. On prepaid debit card: funds are pre-loaded onto the card from another source of funds. The amount available on the card is the amount loaded on the card. The BitPay card is a prepaid debit card. This means that you cannot spend more than the balance at any given time. The BitPay Card is financed by converting cryptocurrencies to USD to spend anywhere Visa is accepted.