HappyCoins offers a safe, fast, transparent and cheap exchange service for holders of European bank accounts who wish to buy and/or sell bitcoins. Users around Europe can instantly buy bitcoins using an online payment method, such as iDEAL, Bancontact Mister Cash, Sofort or Giropay. Alternatively, European bank account holders in the Single Euro Payments Area without access to an instant payment method, can buy bitcoins by transferring money to HappyCoins through SEPA bank wire.

Clients can start buying and selling bitcoins directly after creating a HappyCoins Account. Accounts are created to facilitate the use of the service, by offering a 'one-click' ordering method. Euros transferred to HappyCoins are instantly traded for bitcoins, which are then automatically sent to the client’s bitcoin receive address of their private wallet.

HappyCoins charges a small fee for her exchange service. This fee has two components: one is to cover charges from banks and payment service providers (bank fee). The other component is the actual fee for the HappyCoins service. These fees are clearly specified before a buy or sell transaction is initiated.