President Joe Biden’s tax plan will feature higher levies on corporations and wealthy Americans, with relief eyed for middle-class households, a White House economic aide said Tuesday.

“The key here is that the president believes strongly that the biggest corporations and those folks who have done extremely well over the last several decades should pay a bit more,” Bharat Ramamurti, deputy director of the National Economic Council, said Tuesday in an interview with Bloomberg Television.

One aim of Biden’s coming tax program will be to encourage large businesses and multinational corporations to boost their investments in the U.S., Ramamurti said. Wealthy individuals who have profited even during the Covid-19 crisis will be targeted for higher levies, he said.

“We hope to work with Congress to accomplish those goals,” Ramamurti said, without offering a timeline for any announcements. “The president’s tax plan is intended to make sure that middle-class families are not paying more than their fair share and that the wealthiest folks, who by and large have done quite well over the last several years, including during the last year, are paying a little bit more.”

Asked how middle class might be defined, Ramamurti said, “A teacher and a nurse who collectively make, you know, $110,000, deserve relief. And what we’ve seen in the data is that families with that kind of profile have suffered.”

Parents with kids have been given relief with expanded child-tax credits in the $1.9 trillion pandemic-relief bill signed last week, Ramamurti said. But despite calls by Democratic lawmakers including House Appropriations Chair Rosa DeLauro to make that measure permanent, White House aides Tuesday refrained from making such a commitment.

“I think time will tell whether or not this policy is made permanent,” Heather Boushey, a member of the Council of Economic Advisers, said on MSNBC.

Ramamurti said that Biden has said “he’s interested at looking at that. Obviously we’re not quite” at that point yet.

Republicans have blasted the Biden administration’s tax plan, which Bloomberg News reported Monday would amount to the first major hike in rates since the Clinton administration in 1993.

“The Biden-Harris administration is fulfilling its campaign promise to ram through job-killing tax hikes,” Rick Scott, the Florida senator who chairs the Senate GOP’s campaign arm, said in a statement Tuesday. “As folks across the nation recover from this economic crisis, the last thing they need is to send their hard-earned money to fund the Democrats’ big government agenda.”

Boushey highlighted that the U.S. economy did well in the aftermath of the last tax hikes. Then-President Bill Clinton’s economic program in 1993 included higher income-tax rates and the last increase in the national gasoline tax, and came at a time when unemployment remained elevated after the 1990-91 recession.

There are arguments that tax increases “are necessarily going to thwart growth, but that’s not what we saw in the 1990s,” Boushey said. “The second half of the 1990s were years that were actually quite good for working Americans. It was a period where we actually saw inequality close and wages rise across the bottom half of the wage distribution.”

-With assistance from Tom Keene, Lisa Abramowicz, Josh Wingrove, Matt Shirley, Erik Wasson and Laura Davison.

This article was provided by Bloomberg News.