The main elements of Japan's financial system are much the same as those of other major industrialized nations: a commercial banking system, which accepts deposits, extends loans to businesses, and deals in foreign exchange; specialized government-owned financial institutions, which fund various sectors of the domestic economy; securities companies, which provide brokerage services, underwrite corporate and government securities, and deal in securities markets; capital markets, which offer the means to finance public and private debt and to sell residual corporate ownership; and money markets, which offer banks a source of liquidity and provide the Bank of Japan with a tool to implement monetary policy.