Consider this article by the Cato Institute, a libertarian think tank, which discusses how the Reagan tax cuts affected the unemployment rate.

Excerpt:

In 1980, President Carter and his supporters in the Congress and news media asked, “how can we afford” presidential candidate Ronald Reagan’s proposed tax cuts?

Mr. Reagan’s critics claimed the tax cuts would lead to more inflation and higher interest rates, while Mr. Reagan said tax cuts would lead to more economic growth and higher living standards. What happened? Inflation fell from 12.5 percent in 1980 to 3.9 percent in 1984, interest rates fell, and economic growth went from minus 0.2 percent in 1980 to plus 7.3 percent in 1984, and Mr. Reagan was re-elected in a landslide.

[…]Despite the fact that federal revenues have varied little (as a percentage of GDP) over the last 40 years, there has been an enormous variation in top tax rates. When Ronald Reagan took office, the top individual tax rate was 70 percent and by 1986 it was down to only 28 percent. All Americans received at least a 30 percent tax rate cut; yet federal tax revenues as a percent of GDP were almost unchanged during the Reagan presidency (from 18.9 percent in 1980 to 18.1 percent in 1988).

What did change, however, was the rate of economic growth, which was more than 50 percent higher for the seven years after the Reagan tax cuts compared with the previous seven years. This increase in economic growth, plus some reductions in tax credits and deductions, almost entirely offset the effect of the rate reductions. Rapid economic growth, unlike government spending programs, proved to be the most effective way to reduce unemployment and poverty, and create opportunity for the disadvantaged.

The conservative Heritage Foundation describes the effects of the Bush tax cuts.

Excerpt:

President Bush signed the first wave of tax cuts in 2001, cutting rates and providing tax relief for families by, for example, doubling of the child tax credit to $1,000.

At Congress’ insistence, the tax relief was initially phased in over many years, so the economy continued to lose jobs. In 2003, realizing its error, Congress made the earlier tax relief effective immediately. Congress also lowered tax rates on capital gains and dividends to encourage business investment, which had been lagging.

It was the then that the economy turned around. Within months of enactment, job growth shot up, eventually creating 8.1 million jobs through 2007. Tax revenues also increased after the Bush tax cuts, due to economic growth.

In 2003, capital gains tax rates were reduced. Rather than expand by 36% as the Congressional Budget Office projected before the tax cut, capital gains revenues more than doubled to $103 billion.

The CBO incorrectly calculated that the post-March 2003 tax cuts would lower 2006 revenues by $75 billion. Revenues for 2006 came in $47 billion above the pre-tax cut baseline.

Here’s what else happened after the 2003 tax cuts lowered the rates on income, capital gains and dividend taxes:

• GDP grew at an annual rate of just 1.7% in the six quarters before the 2003 tax cuts. In the six quarters following the tax cuts, the growth rate was 4.1%.
• The S&P 500 dropped 18% in the six quarters before the 2003 tax cuts but increased by 32% over the next six quarters.
• The economy lost 267,000 jobs in the six quarters before the 2003 tax cuts. In the next six quarters, it added 307,000 jobs, followed by 5 million jobs in the next seven quarters.

The timing of the lower tax rates coincides almost exactly with the stark acceleration in the economy. Nor was this experience unique. The famous Clinton economic boom began when Congress passed legislation cutting spending and cutting the capital gains tax rate.

Whenever people with savings take risks to grow their wealth, there will be jobs created.