Just 28 percent of respondents in a new survey support President Trump's tax plan.

An ABC News/Washington Post poll finds 44 percent of respondents disapprove of Trump's tax plan and another 28 percent are undecided, given what they know about the effort.

The poll also finds that 65 percent of respondents think large corporations don't pay enough in taxes.

A majority of respondents, 78 percent, support tax cuts for middle-and lower-income people, compared to just 19 percent who oppose these cuts.

But respondents largely oppose tax cuts on higher-income people.

Only 33 percent support tax cuts for higher-income people, compared to 62 percent who say the opposite.

Respondents are divided about tax cuts on businesses, with 45 percent saying they support tax cuts for businesses and 48 percent saying they do not.

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Just 10 percent of respondents think Trump's tax plan will mainly reduce taxes for the middle class, while 51 percent think it will primarily cut taxes for the wealthy.

The poll was conducted from Sept. 18 to 21 among 1,002 adults. The margin of error is 3.5 percentage points.

Trump is expected to travel Wednesday to Indiana to promote a new tax-reform framework being produced by congressional Republicans and administration officials.

A report this past weekend said the wealthiest Americans will pay a top tax rate of 35 percent under a plan crafted by Trump administration officials and GOP leaders.

The 35 percent rate is lower than the current 39.6 percent paid by the country's top earners.

President Trump previously said the wealthiest Americans would not receive a tax cut under his reform plan.