Doing Business 2016: The latest World Bank flagship assessment of the ease of doing business in 189 economies puts Singapore on top again while Ireland slipped to a 17 rank from 13 last year. In the global ranking stakes, joining Singapore on the list of the top 10 economies with the most business-friendly regulatory environments are New Zealand, in second place; Denmark (3); South Korea (4); Hong Kong, China (5); United Kingdom (6); United States (7); Sweden (8); Norway (9); and Finland (10).