New Zealand First leader Winston Peters has announced a policy that would pay parents to have children. The proposed Kiwi Kids Grant would see families receive up to $45,000 in tax-free payments, delivered 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 said the rate of New Zealand citizens having children had fallen so sharply that the country faced what he called a "population precipice." RNZ

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

The trend is backed by 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 what demographers call the Demographic Transition Model — a stage where both birth and death rates are low, and the population becomes 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 stop the long-term 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 all of that, 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 against the Kiwi Kids Grant. The NZ First proposal is a direct cash payment, 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, covering 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 question Spoonley is raising is whether any single policy tool, however generous, can shift fertility outcomes at a 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.

The broader context here is the gap between what NZ First is proposing and what the demographic evidence supports. Peters has identified a real and accelerating trend, and Spoonley's data confirms its severity. But the instruments being offered are, on the international evidence, not sufficient to the scale of the problem as described. The burden now sits with 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 Spoonley argues is the more consequential lever for population policy.