Inflation and Consumption Demand

Inflation is a sustained increase in the general price level, which reduces the quantity of goods and services purchasable with a given amount of money. It weakens real household consumption demand when household incomes, wealth and access to credit do not rise sufficiently to offset higher prices. The effect concerns the volume of consumption, even though nominal expenditure may increase.

Purchasing-power and household-budget channel

When prices rise faster than nominal disposable income, real disposable income falls. Households can then purchase fewer goods and services from the same income.

• Because food, energy and other essential goods are difficult to reduce immediately, their higher cost absorbs a larger share of the household budget.
• This budget squeeze crowds out discretionary consumption, particularly non-essential goods, services and durable purchases.
• If wages and transfers adjust slowly, the fall in purchasing power continues until nominal income catches up with prices.

Wealth, uncertainty and credit channel

Inflation can reduce the real value of currency holdings and fixed nominal financial assets, creating a negative real wealth effect for savers.

• Greater uncertainty about future prices and income can increase precautionary saving, reducing present consumption.
• Monetary tightening undertaken to control inflation can raise borrowing costs and loan repayments, thereby weakening credit-financed purchases such as vehicles and consumer durables.
• Households may postpone large purchases when high inflation and tighter financial conditions make future budgets uncertain.

Distributional effects and qualifications

The contraction is usually stronger among households with fixed nominal incomes, limited savings and a high share of essential items in expenditure.

• Inflation redistributes purchasing power from creditors to debtors, so the aggregate effect depends partly on which group has the higher marginal propensity to consume.
• Expected price increases may temporarily bring purchases forward, while wage indexation or income growth may cushion the decline in real consumption.
• Demand-driven inflation may initially coexist with strong consumption; therefore, inflation does not mechanically reduce demand in every circumstance.

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