Marginal propensity to consume

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Marginal propensity to consume (MPC) is the share of an additional dollar of income that goes to consumption.


Definition

According to Principles of Economics by Timothy Taylor (3rd edition),

Marginal propensity to consume (MPC). The share of an additional dollar of income that goes to

consumption. According to Macroeconomics by Mankiw (7th edition),

Marginal propensity to consume (MPC). The increase in consumption resulting from a one-dollar increase in disposable income.