Some of the items in the GOP tax reform discussion are just "buying off" special interests and serve no other purpose, Republican Sen. Bob Corker told CNBC on Thursday.

"Some of the things we're doing, I'm sorry, are ridiculous," Corker told "Squawk Box," though he did not mention any specifics.

"I'm sorry, but we live in a political world," said Corker, a member on the Senate Budget and Banking committees. Those things are "not going to drive 1 ounce of economic growth. But it's what you have to do to pass a tax bill."

Corker described some efforts to pass tax reform as "unfortunate."

"It's buying off of people to pass tax reform," Corker said.

"We could take a lot of this off in the trash can and make it easier and actually do something that grows our economy and increases our wages," he said.

President Donald Trump and the GOP have been pushing for a major overhaul to the U.S. tax code. They believe tax relief would give the current economy a boost.

House Republicans on Thursday narrowly approved a budget deal, a crucial step toward passing tax cuts later this year.

Corker, who has been highly critical of Trump, told CNBC that despite his war of words with the president he's "all in" on tax reform. Corker is not seeking reelection.

The Tennessee Republican said he wants to "go out with afterburners trying to make things happen."