The move is meant to tackle dwindling foreign exchange reserves coupled with demand for foreign exchange by oil importers, which is weakening the local cedi and increasing living costs.

If implemented as envisioned, the new policy "will fundamentally change our balance of payments and significantly reduce the persistent depreciation of our currency," Bawumia said.

(Reporting by Cooper Inveen and Christian Akorlie; Writing by Sofia Christensen; Reporting by Estelle Shirbon and James Macharia Chege)