Do corporate tax cuts boost economic growth?
Nope.
"There is evidence for publication selectivity in favor of reporting growth-enhancing effects of corporate tax cuts. Correcting for this bias, We cannot reject the hypothesis of a zero effect of corporate taxes on growth."
What do tax cuts for the rich do?
They increase inequality.
They have no effect on economic growth or unemployment.
"Our results provide strong evidence against the influential political–economic idea that tax cuts for the rich ‘trickle down’ to boost the wider economy."