Three Pacific states have done well in surveys conducted by the World Bank measuring the ease of doing business.
Among small island developing states Fiji was rated 4th, Tonga 6th and Samoa 10th.
In a broader survey of 178 nations Fiji came 36th and Tonga 47th.
Tonga's Prime Minister, Dr Feleti Sevele, says the favourable results for Tonga reflect the efforts of his Government in creating an investor and business-friendly economy.
The World Bank says a high ranking on its ease of doing business index means a country's regulatory environment is conducive to business operations.