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The Global Insight

Who invented the supply-side economics?

Author

Christopher Davis

Updated on February 20, 2026

economist Arthur Laffer
Supply-side economics, Theory that focuses on influencing the supply of labour and goods, using tax cuts and benefit cuts as incentives to work and produce goods. It was expounded by the U.S. economist Arthur Laffer (b. 1940) and implemented by Pres. Ronald Reagan in the 1980s.

Which president used supply-side economics?

President Ronald Reagan
Supply-side economics is better known to some as “Reaganomics,” or the “trickle-down” policy espoused by 40th U.S. President Ronald Reagan.

When was Reaganomics supply-side economics?

During his presidential campaign in 1980, Ronald Reagan endorsed the Kemp-Roth proposal and embraced supply-side ideas.

What was wrong with Reaganomics?

Cuts worked during Reagan’s presidency because the highest tax rate was 70%. They have a much weaker effect when tax rates are below 50%. Reaganomics would not work today because tax rates are already low compared to historical levels of 70%.

How did Reaganomics benefit the wealthy?

Tax relief for the rich would enable them to spend and invest more. This new spending would stimulate the economy and create new jobs. Reagan believed that a tax cut of this nature would ultimately generate even more revenue for the federal government.

What is another name for demand side economics?

Demand-side economics is frequently referred to as “Keynesian economics” after John Maynard Keynes, a British economist who outlined many of the theory’s most important attributes in his General Theory of Employment, Interest, and Money.

Why is the theory of supply side economics called that?

It is called supply-side economics because the theory believes that production (the “supply” of goods and services) is the most important macroeconomic component in achieving economic growth. What Is the Opposite of Supply-Side Economics?

What are the three pillars of supply side economics?

Like most economic theories, supply-side economics tries to explain both macroeconomic phenomena and—based on these explanations—offer policy prescriptions for stable economic growth. In general, the supply-side theory has three pillars: tax policy, regulatory policy, and monetary policy.

Why are tax cuts important in supply side economics?

He popularized the controversial idea that greater tax cuts for investors and entrepreneurs provide incentives to save and invest, and produce economic benefits that trickle down into the overall economy. In this article, we summarize the basic theory behind supply-side economics.

What’s the difference between Keynesian and supply side economics?

A Keynesian tends to think that monetary policy is an important tool for tweaking the economy and dealing with business cycles, whereas a supply-sider does not think that monetary policy can create economic value . While both agree that the government has a printing press, the Keynesian believes this printing press can help solve economic problems.