How governments use spending and taxation to stabilise the economy, fight recessions, and control inflation.
Prof. Muhebullah Karimzada · UNBC Economics
The Framework
Government spending and taxation as macroeconomic tools.
🏗️
Government Spending (G)
Public spending on goods, services, infrastructure, and transfers (employment insurance, social assistance) directly injects money into the economy and boosts aggregate demand.
💸
Taxation (T)
Taxes withdraw income from households and firms. Tax cuts leave more money in private hands; tax increases reduce disposable income and dampen spending across the economy.
🎯
The Goal
Fiscal policy aims to stabilise the business cycle — stimulating demand during recessions, cooling it during booms — while supporting long-run growth and employment.
The Spending Multiplier
$1 of government spending creates more than $1 of GDP. Each round of spending becomes someone else's income.
Round 1Govt spends $1B on a highway. Construction workers earn $1B in income.
Round 2Workers spend $0.80B at local stores (MPC = 0.8). Store owners earn $0.80B.
Round 3Store owners spend $0.64B. And so on, each round smaller than the last.
Multiplier1 ÷ (1 − MPC) = 1 ÷ 0.2 = 5. One dollar of spending creates five dollars of GDP.
Two Directions
Expansionary vs. Contractionary Fiscal Policy
Expansionary (Loose)
G ↑ or T ↓
Used when: recession · high unemployment · slow growth
↑Government spending rises — public works, transfers
↑Tax cuts leave more in households' pockets
↑Aggregate demand and GDP rise
↑Employment recovers
Contractionary (Tight)
G ↓ or T ↑
Used when: high inflation · overheating economy
↓Government spending is cut or held flat
↓Tax increases reduce disposable income
↓Aggregate demand cools
↓Inflation pressures ease
Automatic Stabilisers
Some fiscal tools respond automatically to the economy — no legislation needed. They cushion downturns and cool booms without a single new vote.
📉 Recession
↓GDP and employment fall
↓Tax revenues fall (less income to tax)
↑EI and social assistance rise automatically
↑Net: government injects spending, cushioning the fall
⚖️
Auto- matic
📈 Expansion
↑GDP and employment rise
↑Tax revenues rise (more income to tax)
↓EI and transfer payments fall automatically
↓Net: government withdraws stimulus, cooling the boom
Key advantage: Automatic stabilisers act immediately — no implementation lag, no political debate. They soften the business cycle in both directions.
The Fiscal Balance
Budget, Deficit & National Debt
When spending exceeds revenue, governments run deficits. Deficits accumulate into national debt.
Budget surplus: Revenue > Spending. The government is paying down debt or saving. Typically achieved in strong economic periods.
Budget deficit: Spending > Revenue. The government borrows by issuing bonds, adding to the national debt. Common during recessions.
National debt concern: Persistent deficits cause debt to grow faster than GDP — potentially crowding out private investment and limiting future fiscal room.
"
Fiscal policy is blunt, slow, and political — but when monetary policy has run out of room, it is the only tool left that can prevent a recession from becoming a depression.
— Prof. Muhebullah Karimzada · ECON 101 · UNBC
Fiscal Policy · Multiplier · Automatic Stabilisers · National Debt