John Momis says many millions of dollars is due to Bougainville as per the peace agreement concluded with PNG in 2001.
In a lengthy statement, Mr Momis says his government estimates that PNG has underpaid Bougainville for the recurrent unconditional grant and owes at least US$33 million dollars, which must be paid immediately.
The president says Bougainville is owed another US$207 million under the Restoration and Development Grant.
Mr Momis says the national tax office is also failing to hand over taxes collected in Bougainville.
