What it means
Wheeling and dealing is all about hustly little business moves: buying, selling, bargaining, calling in favours, nudging people, and somehow coming out with the sweeter end of the deal. You use it for someone who's always working an angle. It can sound a bit admiring if they're sharp, or a bit dodgy if they're too slick for comfort.
Usage examples
"He’s been wheeling and dealing all week, chatting up suppliers and nudging prices down, reckons he can shave a tenner off every order."
"He spent the whole car boot sale wheeling and dealing, turned up with junk and left with a profit and a lawnmower."
"There was a lot of wheeling and dealing behind the scenes before the transfer finally got signed off."
"She wasn’t hired for the title, she was hired because she’s good at wheeling and dealing when the budget goes all wonky."
"By lunchtime he'd done a bit of wheeling and dealing on Marketplace and somehow turned one old bike into cash and a speaker."
Where it comes from
It’s been in American English since the late 1800s. The phrase pairs wheel and deal to paint someone in constant motion, always trading, bargaining, and chasing the next opening. It later fitted politics, sales, and backroom manoeuvring really well, but it wasn’t born as a fixed term from one single trade.