Merchant account services aren't only available for larger companies, but also for smaller businesses as well. Smaller business like home and internet based operations.A credit card machine is defined an electronic processing unit a merchant need in his establishment to process a payment for the goods he is offering. This payment can have as the source a Credit Card (like Master Card, VISA, American Express, and Discover card), a DEBIT Card, a Gift Card and/or a Check (a check reader is required in this case).Online credit card processing has overcome the barrier of geographical boundaries and made it possible to transact business from all over the globe. Now, you can shop for your favorite products, make your bill payments and, get the air and rail tickets booked conveniently over the internet by means of online credit card processing. Merchant account ensures speedy credit card processing.Before you start processing credit card payments, you still need to acquire a merchant account. Authorization to process credit cards granted.