New Zealand First leader Winston Peters has announced the party would pay parents to have children if elected to government, unveiling a proposed Kiwi Kids Grant that would deliver up to $45,000 per family in tax-free payments administered through Inland Revenue.

Under the policy, parents with at least one parent who is a New Zealand citizen would receive $5,000 a year for the first three years of a child's life, capped at three children. Peters framed the announcement around what he called a "population precipice," saying the rate of New Zealand citizens having children had fallen dramatically. RNZ

Massey University professor and demographics expert Paul Spoonley, a Fellow of the Royal Society of New Zealand, said the declining birth rate was "much more complex than simply providing a baby bonus." Spoonley put the current fertility rate at 1.53 births per woman, about 25 percent below where it needs to be, and estimated it would likely fall further to 1.2–1.3, in line with most of Europe. He described the decline over the past 10 years as "very sharp." RNZ

The trajectory is consistent with longer-run data. New Zealand's total fertility rate was 1.65 in March 2023 and had dropped to 1.52 by March 2024, according to Spoonley's published analysis. He has previously described New Zealand as having entered the fourth stage of the Demographic Transition Model, characterised by low birth and low death rates, with the country becoming older, more urban, with fewer young people, fewer workers and greater diversity. The Conversation

Spoonley said international evidence showed baby-bonus-style incentives might produce a "short-term blip" but do nothing to stem the structural decline in birth rates. He pointed to Sweden as a case study. Sweden offers 480 days of paid parental leave, 90 of which are available to grandparents, alongside what Spoonley called an "extremely generous" package: free check-ups, child health clinics, extra insurance, tax-free cash for each child until age 16, and low-cost pre-school. Despite that package, Spoonley said, Sweden only saw a short-term blip, and its fertility rate is now almost identical to New Zealand's. RNZ

The Swedish comparison is worth weighing carefully against the Kiwi Kids Grant. The NZ First proposal is a direct cash transfer, tax-free, delivered through IRD, for the first three years of a child's life. Sweden's package is broader, deeper and sustained across the child's life to age 16, encompassing leave entitlements, healthcare infrastructure and early childhood education. If the far more comprehensive Swedish package produced only a temporary uptick before fertility settled back to levels comparable with New Zealand's, the policy challenge Spoonley is identifying is whether any single instrument, however generous, can shift fertility outcomes at the population level.

Spoonley argued the more substantive discussion was about immigration. He said immigration was one of the "few policy levers" available to increase the population or keep it growing, and that the country needed to have a conversation about how many migrants it wanted to accept to counterbalance the fertility decline. RNZ

That framing aligns with more recent demographic data showing a major reversal in New Zealand's immigration numbers and population growth, with parts of the country now seeing population declines rather than the sustained growth of previous years. New Zealand is undergoing major demographic change that includes declining fertility, and the combination of falling birth rates and shifting migration patterns brings the prospect of population stagnation into view for some regions. The Conversation

Birth rates are falling globally, inspiring pro-natalist movements and government responses in several countries. The NZ First proposal sits within that international trend, but Spoonley's evidence suggests the policy lever Peters has chosen is the one with the weakest demonstrated track record for producing lasting change.

For NZ First, the Kiwi Kids Grant is a clear signal on where the party stands on the family-and-population question. The policy would be substantial in fiscal terms if implemented, with payments of up to $45,000 per family. But Spoonley's intervention places the burden of proof on the party to explain how a cash-only incentive would succeed where Sweden's far more comprehensive package did not, and to address the immigration question that he argues is the more consequential lever for population policy.

The policy gap between what NZ First is proposing and what the demographic evidence base supports is the core tension here. Peters has identified a real and accelerating trend. Spoonley's data confirms the severity. But the instruments being offered are, on the international evidence, insufficient to the scale of the problem as described.