Story highlights Donald Trump says hedge fund managers would pay more, but corporations would pay less, under his tax plan

He called CEO pay "a total and complete joke" in some cases, saying friendly corporate boards make it possible

Washington (CNN) Hedge fund managers should worry, but corporations would get tax breaks if Donald Trump gets his way.

Their chief executives, though, might need to sweat -- particularly if their compensation is "a total and complete joke" made possible by friends who serve on their corporate boards.

The real estate mogul who's leading Republican presidential polls previewed his tax plan Sunday in an appearance on CBS' "Face the Nation," saying the full proposal is about three weeks away.

"We have an amazing tax plan," Trump said. "We're going to be reducing taxes for the middle class, but for the hedge fund guys, they're going to be paying up."

In recent weeks Trump has attacked hedge fund managers who pay 20% capital gains tax rates even though many of those managers make enough to qualify for the top bracket of 39.6% taxes on other income. Trump on Sunday hit Hillary Clinton and Jeb Bush as beholden to those hedge fund managers, who contribute to their campaigns.

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