They pay more by percentage or by dollar amount than you can I combined. This idea they the rich are under taxed is ridiculous. The question is, are we OVER taxing them enough. Do we want to take their rate to 75%?
I believe that you would refer to the tax breaks they get... and claim they are getting a free ride. But the government doesn't just give free money even to the rich. Tax breaks, loopholes, and every other evil trick the rich use to avoid taxes exist because our federal government wants to manipulate how they spend their money.
"Invest (spend) your money and we'll not tax you on it" The governments getting you to increase cash in the market, they will make more money taxing what other people do with it as it passes from hand to hand...
"Put your money in the bank and not only will we tax the interest but we'll deflate the value of the dollar so your money will lose value every day that it's there!" The government can only tax your money once if you don't spend it. So they make it a doosy. They want your money out in the marketplace.
"We'll give you free sewer and water if you put your plant here!" The government then collects income taxes from the 100 employees you just hired and makes 10x the cost of the water and sewer.
So now those businesses have incentive to try and manipulate government. If the governments goals are in-line with that businesses strategy the tax breaks and loopholes are a boon. You want to put the plant in Chicago, so you want them to start courting you and offering you tax breaks... So you start lobbying, donating to campaigns...
Do you see where this leads? All the corporate boot licking they do is precisely because they try to manipulate the markets. If the government taxed at a flat rate... maybe different for individuals and corporations, but none-the-less, if it got out of the business of manipulating corporations. Corporations would not longer have a need to try to manipulate the government.
Progressive taxation corrupts both the Corporations that are taxed as well as the government doing the taxing.