If you have just started up your business, or if you have been in business for awhile, have you decided to accept debit and credit card transactions? If not, you will find you are losing out on a large percentage of sales. Eventually, you will probably decide it will significantly add to your profit and cash flow to make the investment into credit card processing.
My advice to you is to compare banks and other credit card processing companies before making a decision about where to entrust your business. Fees vary widely as do services. Don't sign a contract until you read the fine print. Read this article which lists and discusses for you all the different types of fees to which you will be subject. It's an eye-opener! Then proceed with caution!