Banks play an important role in the economy by serving as financial intermediaries. They accept deposits from savers and pool those funds to provide credit to borrowers, either directly through lending or indirectly by investing in capital markets. This transfers funds from those with surplus money to invest to those who need to borrow funds. Commercial banks also facilitate national and international trade by transferring funds, which is key to the functioning of the economy. Banks include central banks that implement monetary policy, commercial banks that accept deposits and provide credit, savings banks for lower income savers, and development banks that lend to new businesses.