In recent weeks, Donald Trump has torn up the usual Republican script on taxes. He has called for tax cuts for the middle class while complaining of “outrageous” tax breaks for multimillionaires, especially hedge fund managers.

On Wednesday, Jeb Bush joined Mr. Trump by issuing a tax plan that ends certain tax breaks for hedge fund managers. But aside from that detail, Mr. Bush’s plan stays very much on script for Republican tax plans: It cuts taxes for almost everyone who pays income tax, with by far the largest tax cuts at the top.

According to an analysis by The New York Times, Mr. Bush’s tax plan would reduce the effective income tax rate on filers making $10 million or more per year to approximately 21 percent, down from 26 percent in 2013, the most recent year for which data are available. The average taxpayer in this group earned $29.2 million in 2013, meaning the plan proposed by Mr. Bush would have saved them an average of $1.5 million that year.

High earners were hit with a large tax increase in 2013, because of the partial expiration of the George W. Bush tax cuts and new taxes in the Affordable Care Act. Jeb Bush’s tax plan would lower the tax burden on the wealthiest to near the levels that prevailed under his brother.