Robert Frank begins his column in The New York Times:
When asked why he robbed banks, Willie Sutton famously replied, “Because that’s where the money is.” The same logic explains the call by John Edwards, the Democratic presidential candidate, for higher taxes on top earners to underwrite his proposal for universal health coverage.
Had Frank talked to a historian, he would know that Willie Sutton never actually uttered those words. I mention this because it offers a bit of foreshadowing of the rest of the article.
Franks asserts:
Because higher taxes on top earners reduce the reward for effort, it seems reasonable that they would induce people to work less, as trickle-down theorists claim. As every economics textbook makes clear, however, a decline in after-tax wages also exerts a second, opposing effect. By making people feel poorer, it provides them with an incentive to recoup their income loss by working harder than before. Economic theory says nothing about which of these offsetting effects may dominate.
Clearly economic theory makes no conclusions about such responses. However, Frank’s argument is essentially the reverse of the trickle-down economists. Thus, if we cannot reject the substitution effect, we cannot reject the income effect either. Unfortunately, Frank believes that since we do not know the overall effect, his counterparts are wrong and by deduction, he is correct. If we know little about the overall effect, however, neither side can conclude that they were correct. Nevertheless, Frank trots on…
…attacking the straw man:
Trickle-down theory also predicts a positive correlation between inequality and economic growth, the idea being that income disparities strengthen motivation to get ahead. Yet when researchers track the data within individual countries over time, they find a negative correlation.
I am not aware of this hypothesis, but nevertheless let’s explore Frank’s claim. (I am aware that many trickle-down theorists do not care much about inequality, but this is not Frank’s argument). Income inequality has increased in terms of pre-tax dollars and excludes government transfers. So how exactly does taxation have any effect on inequality? One cannot argue that taxes are having an effect on a pre-tax phenomena.
Finally, Frank concludes:
The rich are where the money is. Many top earners would willingly pay higher taxes for public services that promise high value. Yet trickle-down theory, which is supported neither by theory nor evidence, continues to stand in the way. This theory is ripe for abandonment.
I have a hard time with the notion that the “rich” like to pay taxes. Nobody likes to pay taxes regardless of the services they produce. By the way, what are these services that the rich are so willing to pay for?
Good or bad, the trickle-down approach is essentially based on the ideology that low tax rates allow for a more efficient use of resources and that this efficiency will lead to greater economic growth.
UPDATE: The problem is not just with Franks’s logic, but also apparently due to the fact that he is not reading public finance literature. Greg Mankiw explains.