Fiscal policy is the government's toolkit for shaping the economy through spending, taxes, and borrowing. It aims to promote stability, growth, and employment by adjusting the budget to manage economic cycles and complement monetary policy set by central banks. Key players include government bodies, elected officials, and economists. Tools range from spending on goods and services to taxation and borrowing. Fiscal policy impacts aggregate demand, income distribution, and interacts with monetary policy to achieve macroeconomic goals.