Former Trump economic advisor Larry Kudlow says the way to get rich people to pay more tax is to lower their taxes

• Former Trump advisor Larry Kudlow attacked Joe Biden's plans to tax wealthy Americans more.
• Kudlow said that cutting taxes on the rich would raise government tax revenues.
• The economic theory, known as the Laffer curve, has long been criticized.

Larry Kudlow, an economic advisor to former President Donald Trump, said that the way to increase the amount of tax wealthy people pay is to cut their taxes.

In a Monday-night interview with Fox News' "The Ingraham Angle," Kudlow addressed reports that President Joe Biden was considering the first major federal tax increase in 30 years to pay for expensive bills to help secure the country's economic recovery after the COVID-19 pandemic.

In the interview, Kudlow contrasted Biden's tax plans with the 2017 Trump-administration tax cuts, which Biden's administration is now seeking to undo.

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Kudlow, who served as the director of the National Economic Council under Trump, said that the Trump administration's cuts had primarily benefited people earning "the middle income and the lower-middle income."

"This business about getting them to pay their fair share - the way to get upper-income people to pay more in taxes is to lower their tax rate. Not only will they have investment incentives, they will also have no tax avoidance," Kudlow said.

"They never tell you that, but the evidence is very clear," he added.

There has long been debate between Republicans and Democrats over whether raising taxes boosts or damages the economy.

Kudlow was apparently drawing on the research of his mentor Art Laffer, whose theories have long been a major influence on Republicans.

Laffer advised the Trump administration on its tax cuts, and Trump in 2017 awarded him the Presidential Medal of Freedom, the highest award that can be bestowed on an American civilian.

Under Laffer's so-called supply-side-economics theories, reducing taxes boosts the economy, leading to higher tax revenues overall. It's a hypothesis known as the Laffer curve.

Democrats have long criticized the theory, saying that the boosts in tax revenues pledged by Laffer and his followers have repeatedly failed to materialize, damaging government finances and exacerbating inequality.

Under Biden's tax plan, corporations would see their taxes increased alongside households earning more than $400,000 a year. The plan would also increase capital-gains tax.