He made the announcement at the end of a successful Joint Supervisory Body (JSB) meeting in Arawa on Friday 5th February, which he co-chaired with Bougainville President, Ishmael Toroama.
PM Marape said such early allocation was "unprecedented" and highlighted his Government's commitment to Bougainville.
"For us to deliver K146. 7 million early, in February, is unprecedented," he said.
"Not too many governments of the past have done this sort of thing."