How reliably can economists predict the effects of the proposed tax rate changes?
“What Happens if the Tax Bill Is a Revenue Disaster?” (nytimes) is a piece by Nobel laurate Paul Krugman. He uses his macro-sized brain to predict how Americans and American enterprises will react to this bill and thus what the likely impact on revenue is.
My comment:
Thanks, Professor Krugman, Your last prediction about the markets and the economy that I can recall was in November 2016: “It really does now look like President Donald J. Trump, and markets are plunging. … If the question is when markets will recover, a first-pass answer is never.”
I don’t follow the stock market closely. Was there, in fact, ever any kind of recovery for the S&P 500?
On a more serious note, why do we think it would be possible to come up with an accurate prediction? For individuals there has been a lot of research on the tendency of people to work more as rates are lowered or work fewer hours as tax rates are increased. But do we have any data or experience with corporations? Given the complexity of the tax code for business it doesn’t seem as though a simple “look at the rates” approach would work.
Was there any economist who predicted that U2 would move its songs to an offshore Netherlands trust or use corporate shells in Malta and Guernsey for property investments? (The Sun) Since it has never previously been tried, how can anyone know what would happen if it were possible to pay the IRS a straight 20 percent instead of paying armies of lawyers and accountants and offshore functionaries?
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