On Monday night, a key aspect of the Liberal Party's election campaign was challenged when a small business owner said he didn't want a tax cut.

Nathan Scholz, who works in public relations, told the panel on the ABC's Q&A program that he also owns a cafe with his wife but "unfortunately we don't have a $6000 toaster".

He asked Steve Ciobo, who was joined by Richard Di Natale, Nick Xenophon, Terri Butler and Jacqui Lambie on the panel, why corporate tax cuts proposed by the government weren't instead distributed to other areas.

"The corporate tax cuts which your government have proposed will give my wife and I about an extra $8 a week, which is excellent," Mr Scholz said.