WaPo reports:
The Republican tax plan would deliver a major benefit to the top 1 percent of Americans, according to a new analysis by a leading group of nonpartisan tax experts that challenges the White House's portrayal of its effects.
Despite repeated promises from Republican lawmakers that the plan is designed to provide relief to the middle class, nearly 30 percent of taxpayers with incomes between $50,000 and $150,000 would see a tax increase, according to the study by the Urban-Brookings Tax Policy Center.

The majority of households that made between $150,000 and $300,000 would see a tax increase.

Households making more than about $900,000 a year would see their taxes drop by more than $200,000 on average.