Those who are looking for ways to buy small amounts of bitcoin may find the card options more convenient. If you are likely to buy large amounts of virtual currency, a bank transfer may be more suitable. However, bank transfers may take a little longer than card transactions. You must complete identity verification to use card payments, and address verification for bank transfers. Apply for an institutional loan or line of credit macOS Most credit card processors charge 3%, so this is the minimum fee when using a card to buy crypto. Bittrex is one of the best sites to buy crypto with credit card. In addition, you can deposit money with a credit card at low fees. Further, UX buying coins with a credit card is one of the best traits considering bitcoin exchanges. Their high-level security has had some fantastic reviews from users.