The pitch will take place next week. MindShare, Starcom MediaVest, Universal McCann and one other agency will present. The company spends £10 million in the UK annually, according to Nielsen Media Research.
Simon Foster, the senior manager, marketing impact, for Burger King, said the fast-food chain was consolidating the account in a bid "to achieve even greater consistency and cost efficiencies".
Burger King moved the account into Carat without a pitch in May 2000.
The decision was taken after the then incumbent, Lowe Lintas, folded its in-house planning team.
The news comes as Burger King International searches for a new chief marketing officer after Andrew Brent left the company in March without a job to go to.