You are expected to evaluate/examine (AO3) expansionary and contractionary fiscal policies (SL/HL), and draw (AO4) its diagrams (SL/HL)
Expansionary fiscal policy refers to "the use of increased government spending and/or reduced taxes to stimulate economic activity and achieve macroeconomic objectives". It is used when trying to close recessionary gaps.
There are 2 ways fiscal policy can be expansionary:
Cut taxes: This means people and businesses will take home more money, incentivizing more consumption/investment.
Increase government spending (Main policy): Since G is a part of measuring real GDP (C + I + G + X - M), an increase in G will increase economic activity.
The use of decreased government spending and/or increased taxes to reduce the level of economic activity and achieve macroeconomic objectives. This is used when the government wants to close inflationary gaps.
There are 2 ways fiscal policy can be contractionary:
Increase taxes: Firms and households will have less wealth, decreasing consumption and investment.
Decrease government spending (Main policy)
Keynesian View
Neoclassical View
Neoclassicalists believe fiscal policy is ineffective as you're just increasing demand, and no supply, which will, in the long run, just result in higher prices and more government debt.
Should you argue in favor of expansionary fiscal policy, make sure to use the Keynesian style diagram.
Keynesian View