Bank that makes loans to businesses, consumers, and nonbusiness institutions. Early commercial banks were limited to accepting deposits of money or valuables for safekeeping and verifying coinage or exchanging one jurisdiction's coins for another's. By the 17th century most of the essentials of modern banking, including foreign exchange, the payment of interest, and the granting of loans, were in place. It became common for individuals and firms to exchange funds through bankers with a written draft, the precursor to the modern check. Because a commercial bank is required to hold only a fraction of its deposits as cash reserves, it can use some of the money deposited by its customers to extend loans. Commercial banks also offer a range of other services, including savings accounts, safe-deposit boxes, and trust services. See alsobank; central bank; investment bank; savings bank.