Normal good

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In economics, normal goods are any goods for which demand increases when income increases, i.e. with a positive income elasticity of demand. The term does not necessarily refer to the quality of the good.

Depending on the indifference curves, the amount of a good bought can either increase, decrease, or stay the same when income increases. In the diagram below, good Y is a normal good since the amount purchased increases from Y1 to Y2 as the budget constraint shifts from BC1 to the higher income BC2. Good X is an inferior good since the amount bought decreases from X1 to X2 as income increases.

See also

• Consumer theory
• Inferior good
• Superior good

v • d • e Types of goods public good - private good - common good - common-pool resource - club good - anti-rival goods (non-)rivalrous good and (non-)excludable good complementary good vs. substitute good free good vs. positional good (non-)durable good - intermediate good (producer good) - final good - capital good inferior good - normal good - ordinary good - Giffen good - luxury good - Veblen good - superior good search good - (post-)experience good - merit good - credence good - demerit good - composite good

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