How Big a Bang for Trump’s Buck? (Wonkish)
I’m having a hard time figuring out exactly how big a stimulus we’re looking at, but it seems to be around 2 percent of GDP for fiscal 2019. With a multiplier of 0.5, that would add 1 percent to growth.
That said, I’d suggest that this is a bit high. For one thing, it’s not clear how much impact corporate tax cuts, which are the biggest item, will really have on spending. Meanwhile, unemployment is only 4 percent; given Okun’s Law, the usual relationship between growth and changes in unemployment, an extra 1 percent growth would bring unemployment down to 3.5%, which is really low by historical standards, so that the Fed would probably lean especially hard against this stimulus.