Secured business credit cards can be a wonderful way to create a valuable credit history, and pave the way for a higher, unsecured line of credit and a greater chance of loan approval in the future. A secured card really just means that your corporation has opened a savings account and made a deposit that is used as a guarantee for your credit card. Generally, your credit limit on the card will be the same as the deposit you made in your deposit account. Your savings account is a security of payment for the lender.