A merchant account is a type of bank account that allows businesses to accept payments by payment cards, typically debit or credit cards. A merchant account is established under an agreement between an acceptor and a merchant acquiring bank for the settlement of payment card transactions.
In some cases a payment processor, independent sales organization (ISO), or merchant service provider (MSP) is also a party to the merchant agreement.
Whether a merchant enters into a merchant agreement directly with an acquiring bank or through an aggregator such as PayPal, the agreement contractually binds the merchant to obey the operating regulations established by the card associations.
For further information on merchat account, please visit http://en.wikipedia.org/wiki/Merchant_account