ClintonHilaryWASHINGTON  (AP) Donald Trump is overhauling the income tax proposal he unveiled during the Republican primary and increasing the amount that would be paid by the highest-income earners.

Trump says in an economic speech in Detroit that he wants to simplify the tax code to three brackets: 12 percent, 25 percent and 33 percent of income.

That’s a change from September, 2015, when he proposed four brackets that would pay zero, 10 percent, 20 percent and 25 percent.

Trump says the “tax simplification will be a major feature ” of his plan and calls it “the biggest tax revolution since the Reagan tax reform”

He says, “We will make America grow again.”

Experts said his old plan would have increased the debt by as much as $10 trillion over the next decade.

Hillary Clinton is replying to Donald Trump’s economic address on Monday by saying it would benefit rich corporations and the wealthiest Americans at the expense of the working class. She’s promising to raise taxes on the wealthy because, she says, “that’s where the money is.”

During a campaign swing through St. Petersburg, Florida, Clinton wryly advised her supporters: “Don’t let a friend vote Trump.”

Clinton says his scripted speech amounts to Trump scrambling to do “damage control” with a steadier performance designed to reassure Republicans who had grown nervous after a disastrous week.

She says, “Don’t be fooled,” adding, “There is no other Donald Trump.”

Clinton is expected to deliver an economic address in Detroit on Thursday. Aides are billing the speech as a response to Trump’s remarks.