James Tobin won the 1981 Nobel Prize in Economics for his analyses of financial markets and their relations to expenditure decisions, employment, production, and prices.
Tobin made major contributions to macroeconomics and monetary theory. His work examined how households and firms allocate wealth among money, bonds, and other assets, and how financial conditions affect spending and investment. The famous Tobin’s q ratio compares the market value of a firm with the replacement cost of its assets and became an important tool for studying investment.
Tobin also supported the use of fiscal and monetary policy to stabilize economies. He taught at Yale University and served on President John F. Kennedy’s Council of Economic Advisers.
The prize citation did not concern the later Tobin tax proposal alone. That proposal, a tax on foreign-exchange transactions, became associated with Tobin after his Nobel-winning research but was only one part of his broader economic legacy.