Trickle Down Economics, also called Reaganomics (due to its association with the policies of Reagan and Thatcher) or supply-side economics, is the theory according to which policies destined to alleviate poverty and redistribute wealth are unnecessary and even counterproductive. The rich should be allowed to become even more wealthy, by imposing very low tax rates on high incomes (or a flat tax for example) rather than using the tax system to redistribute wealth. The result will be that their wealth will “trickle down” towards those who are less well off.
When government policies favor the wealthy — for example, via tax cuts for upper-income classes — the increase in wealth flows down to those with lower incomes. That’s because the rich are more likely to spend the additional income, creating more economic activity, which in turn generates jobs and eventually, better paychecks for the less well-off. Michael S. Derby (source)
All boats rise on a rising tide. Redistribution is counterproductive because it will take away the incentives to do well, and hence also take away the possibility of wealth creation and subsequent automatic wealth distribution through “trickling down”. All this is reminiscent of laissez-faire and the invisible hand theory.
Reagan’s trickle down policies in the U.S. can still be felt today:
According to the Tax Policy Center, the top marginal tax rate in the U.S. stood at 70% when Reagan was elected in 1980, falling steadily to 28% by 1989, before it began to rise modestly. The top marginal rate now stands at 35% against a peak of 94% in 1945. (source)
These tax cuts were implemented with the support of the Democrats in the House, which explains why they have been upheld all these years. The result of this was, unsurprisingly, a higher concentration of wealth in fewer hands:
In the period since the economic crisis of the early 1970s, US GDP has grown strongly, and the incomes and wealth of the richest Americans has grown spectacularly. By contrast, the gains to households in the middle of the income distribution have been much more modest. Between 1973 … and 2007, median household income rose from $44 000 to just over $50 000, an annual rate of increase of 0.4 per cent. … For those at the bottom of the income distribution, there have been no gains at all. … incomes accruing to the poorest 10 per cent of Americans have actually fallen over the last 30 years. John Quigging (source)
This is already part of the refutation of the doctrine. Obviously not all boats have risen on the same tide. But if you don’t believe this, there’s a paper here and a blogpost here arguing against the doctrine in a more intelligent way. Maybe “spreading the wealth around” a bit and imposing some tougher taxes on the rich isn’t such a bad idea after all. I mean, the “tricklers” have had decades to prove their point, and failed; maybe now it’s time for the “spreaders” to have a go.