The Truth-o-Meter says: Mostly True | Bernie Sanders says tax share paid by corporations has fallen from 33% to 9% since 1952 As politicians and commentators were criticizing decisions by companies to shift their corporate headquarters overseas in order to cut their tax bill to Uncle Sam, Sen. Bernie Sanders, I-Vt., created a shareable meme to illustrate how much corporate tax collection has plunged over the past few decades.