Monetary policy tools constitute a suite of institutional mechanisms utilized by central banks to regulate money supply and target interest rates within an economy's financial system. These instruments, including open market operations, reserve requirement ratios, and discount rate adjustments, function through the transmission mechanism that links policy actions at the central bank level to broader macroeconomic aggregates like aggregate demand and price stability. Theoretical frameworks governing these tools rely on the definition of endogenous money creation, lender-of-last-resort functions, and the optimization of social welfare subject to constraints defined by Phillips curve dynamics and inflation expectations.
Video tutorial: How Central Banks Steer Interest Rates Through Money Supply Tools in Monetary Policy