The 750 refugees were expected to cost an extra $48.8 million over that period on top of the $58 million a year spent on refugee settlement.
New Zealand's permanent quota will lift to 1000 from 2018.
Cabinet papers released last week showed Immigration officials estimated each refugee cost $81,000 over their first three years in New Zealand.
That included health, education, housing, welfare and employment services.
The papers showed New Zealand rejected about 20 per cent of the refugees put forward for re-settlement by the UNHCR.
Criteria for refusal included refugees with large families which were difficult to house or those with family in another country which they could go to as well as health problems.
The papers also stated there were particular security concerns with Syrian refugees and checks done included SIS vetting and working with the so-called 'Five Eyes' partners: Australia, Canada, the USA and UK.