The Labour Party has released its small business policy, which would increase the portion of Government procurement undertaken by smaller companies.
Labour is also pledging a red-tape review and would cut outdated regulations that it says are making life difficult for many small businesses.
Leader David Cunliffe said on Tuesday that Labour will start to collect data on public sector procurement.
"The Government does not keep any statistics about how much of that goes to New Zealand-based small businesses.
"We're going to start by ensuring we do have that data, and then we're going to make sure that we increase the amount of business going to small business by at least another $300 million a year."
Mr Cunliffe said Labour would also simplify the tax system for small businesses if it won general election on 20 September.