A reduction in the proportion of deposits that banks are mandated to hold in reserve, rather than lend or invest, constitutes a monetary policy tool employed by central banks. This adjustment directly impacts the amount of funds available for banks to circulate within the economy. For instance, if a bank is required to keep 10% of its deposits in reserve and this is lowered to 5%, the bank can now lend out an additional 5% of its deposits.
Decreasing this required ratio can stimulate economic activity. By increasing the available funds for lending, banks are more likely to extend credit to businesses and consumers. This heightened access to credit can lead to increased investment, spending, and overall economic growth. Historically, such actions have been taken during periods of economic slowdown or recession to encourage borrowing and inject liquidity into the financial system. This measure should be part of comprehensive framework not sole action.