Want to buy using Coinmama? Note that the fees are not displayed publically but displayed in your buy price when completing your purchase. Debit Card Transactions The protocol for debit card transactions in Bitcoin purchases is almost similar to credit card transactions. For your safety, do not disclose confidential or personal information such as bank account numbers or social security numbers. To buy bitcoin with a pre-paid debit card you will have to exchange it locally using LocalBitcoins. However, when clients use credit cards in purchasing Bitcoin, they elude the monitoring system as credit money is usually legitimate, they then service their loans with the laundered money and the cycle continues. Although most Banks do not authorize the use of credit cards to buy Bitcoins, some credit card providers whose sole business is to offer credit are flexible and offer the service.