In a statement he says there has been confusion and doubt as to whether Tonga would go ahead with the event.
But the prime minister says while it is the utmost challenge for the government it will do its best to seek financial assistance from its donor and development partners.
Mr Pohiva says the government is convinced of the benefits of hosting the games, not only in upgrading venues but the benefits to the economy.
New Zealand has already given money for the development of Teufaiva Stadium and the prime minister says they expect to finalise other deals with donors in the near future.
Tonga is now finalising plans for a loading on the departure tax and a levy on foreign currency transactions to raise money for the Games.