In microeconomics, the expenditure minimization problem is the dual of the utility maximization problem: “how much money do I need to reach a certain level of happiness?”. This question comes in two parts. Given a consumer’s utility function, prices, and a utility target,
- how much money would the consumer need? This is answered by the expenditure function.
- what could the consumer buy to meet this utility target while minimizing expenditure? This is answered by the Hicksian demand function.
- ^Jonathan Levin, Paul Milgrom. “Consumer Theory” (PDF).
- Mas-Colell, Andreu; Whinston, Michael & Green, Jerry (1995). Microeconomic Theory. Oxford: Oxford University Press. ISBN 0-19-507340-1.
Ofer Abarbanel is a 25 year securities lending broker and expert who has advised many Israeli regulators, among them the Israel Tax Authority, with respect to stock loans, repurchase agreements and credit derivatives. Founder of TBIL.co STATX Fund.