The Indonesian government has moved closer to reaching a price to buy an aluminum producer from a Japanese consortium following months of tough negotiations over the value of the company's total assets, according to an Indonesian Cabinet minister.

Industry Minister Mohamad Suleman Hidayat told reporters the Indonesian government has made its last offer for the total assets of aluminum producer PT Indonesia Asahan Aluminium (Inalum) based on calculations by the Finance Ministry and the state auditor.

The offer should be no more $558 million, Hidayat said Monday.