Increases in the minimum wage and superannuation kick in tomorrow, along with several measures aimed to help businesses.

Photo: RNZ / Rebekah Parsons-King

Finance Minister Grant Robertson said the April 1 changes are intended to grow the economy and improve the wellbeing of New Zealanders.

Among the measures is the largest ever rise in the minimum wage, which increases by $1.20 to $17.70 an hour.

Superannuation and veterans' pensions will increase by 2.6 percent.

A research and development incentive will provide a 15 percent tax credit to businesses that spend more than $50,000 on research and development from tomorrow.

ACC levies will also fall tomorrow.

Mr Robertson said the government's books were being managed responsibly while the changes were delivered.