Supply-sie economics is a school of macroeconomic thought that argues that economic growth can be most effectively created using incentives for people to produce (supply) goods and services, such as adjusting income tax and capital gains tax rates. Supply-side economics is often conflated with trickle-down economics, now a derogatory term given to right-leaning economists' views. The term supply-side economics was coined by journalist Jude Wanniski in 1975, and popularized the ideas of economists Robert Mundell and Arthur Laffer.