Credit cards have long provided an easy avenue for entrepreneurs to fund start-up ventures, from businesses to movie productions. Google founders Larry Page and Sergey Brin are reported to have used credit cards to help finance their first purchase of computers and office equipment.

Small businesses are the life blood of U.S. business. There are almost 28 million small businesses in the U.S., and together they account for about half of the U.S. gross domestic product.

For years, home-builder John London of Iowa had a pretty neat business formula going. When putting up a house, he would charge the cost of materials to his credit cards, pay the minimum monthly payment for a while, and then pay the cards off in full when the home was sold.

You can also use a small business credit card to help manage and control expenses for your business.

If your business involves travel, the best card for you may be a card that awards you in frequent flyer miles or allows you to accumulate points that can be redeemed towards free travel.