The way you quoted that Investopedia article is a bit misleading -- it says it identified 18 companies in the Fortune 500 that paid zero tax, and that 258 companies paid an average of 21.2%.
18 out of 500 companies paying zero tax is a pretty low bar for saying that paying zero tax is routine.
Here's the quote from the article:
> The Institute on Taxation and Economic Policy (ITEP), in a recent study, found that over the eight-year period from 2008 to 2015, 258 profitable Fortune 500 companies paid an average effective federal income tax rate of 21.2%. Over that same period, exactly 18 companies, including General Electric, International Paper, Priceline.com and PG&E Corp., avoided paying a single penny of federal income tax.
> 258 profitable Fortune 500 companies paid an average effective federal income tax rate of 21.2%
So of the Fortune 500, 242 companies are unprofitable. Seriously? That ignores all the companies using legislation they helped craft to give themselves tax credits and the accounting tricks they use to bring their profits to "zero." Hell, the list itself is pathologically biased towards those businesses.
Seems the rest of the country has figured out Hollywood accounting.
You own article states the average rate in the US is 21.1%.
Taxes for corporations are not very high at all. Fortune 500 companies routinely pay a less than 0 income tax at the federal level[0], and state level income taxes max out at 12% [1].
The race to the bottom has happened for the big businesses that have leverage. Just not for the little guy.
[0] https://www.investopedia.com/news/how-fortune-500-companies-... [1] https://taxfoundation.org/state-corporate-income-tax-rates-b...