Learn what the Marginal Propensity to Invest (MPI) means, how it’s calculated, and its impact on economic growth and investment decisions.

A technique used to determine the impact very small changes in specific variables, such as producing one additional unit of product, can have on the system as a whole. Marginal analysis supports ...

Marginal analysis was the heart of early Austrian economics and was quickly adopted into mainstream economics, where it is central to modern microeconomic analysis. Amazingly, many people in business ...

Sean Ross is a strategic adviser at 1031x.com, Investopedia contributor, and the founder and manager of Free Lances Ltd. Charlene Rhinehart is a CPA , CFE, chair of an Illinois CPA Society committee, ...