According to the 'Doing Business' website http://www.doingbusiness.org/ New Zealand is again No.1 in the world for starting a business and No.2 overall, for doing business.

The project document, available here, states the project:

'provides a quantitative measure of regulations for starting a business, dealing with construction permits, employing workers, registering property, getting credit, protecting investors, paying taxes, trading across borders, enforcing a contract and closing a business, as they apply to small to medium enterprises'

If you want to read the full report for 2010 get it here