Employee and employer KiwiSaver contributions will lift to 3.5% from 1 April 2026, then to 4% from 1 April 2027, the government confirmed in a Beehive release on 19 June 2026. The changes affect 99.5% of members — a figure that reflects how few are already contributing at higher voluntary rates.

The staged increase builds on a sequence of KiwiSaver settings changes stretching back to the scheme's establishment by the Labour-led government in 2006. The minimum contribution rate has not moved in over a decade; this is the first legislated lift since the early years of the scheme.

What changes, and when

From 1 April 2026, both employee and employer minimum contributions rise from 3% to 3.5%. A further step to 4% follows exactly a year later. The two-stage structure gives payroll systems and employers — particularly small businesses running tight margins — time to absorb the cost before the full rate applies.

The employer-side increase is worth noting separately. Since 1 April 2012, employer contributions have been subject to employer superannuation contribution tax (ESCT), ending the brief tax-free treatment that applied at the scheme's launch. That means the gross cost to employers of moving from 3% to 4% over two years is real and unshielded — there is no tax break softening the step-up.

The Budget 2025 context

The contribution rate increase sits alongside other Budget 2025 adjustments to the scheme's settings. The annual government member tax credit — which matches member contributions at a set rate — was halved to 25 cents per dollar contributed, capped at $260.72 per year. That is a meaningful reduction in the Crown's per-member subsidy, and it shifts more of the accumulation work onto contribution rates themselves.

Against that, analysis published by the Commission for Financial Capability in May 2025 found that KiwiSaver funds could last 30% longer under the Budget 2025 contribution settings than under the pre-budget settings. The modelling reflects the compounding effect of higher inflows over a working life, rather than the value of any individual year's contributions.

Default fund settings are also part of the background here. Since March 2020, members auto-enrolled into a default fund have been placed in a balanced fund rather than a conservative one — a change that lifted expected long-run returns for the roughly one-in-ten members who never actively choose a fund.

What this means in practice

For a member earning the median wage, the move from 3% to 4% over two years represents a material shift in take-home pay. At the same time, it accelerates the accumulation curve — particularly for members who are still in the first half of their working lives and have compounding working in their favour.

For employers, the cost is straightforward arithmetic: an additional 1% of wages over and above current contribution obligations, fully ESCT-liable. Larger employers with payroll systems geared for variable rates will adjust quickly. Smaller operators — many of whom still rely on manual or semi-automated payroll — are the cohort the two-stage timeline is most clearly designed to protect.

The political economy here is not simple. KiwiSaver has been adjusted by every government since its introduction: contribution rates tweaked, the member tax credit cut and partially restored, default fund settings reformed. The current government is simultaneously reducing the Crown's direct per-member subsidy while mandating higher private contributions. Whether that trade-off lands as a net positive for members depends almost entirely on individual circumstances — contribution history, fund choice, retirement timeline, and what the member tax credit reduction means for their specific contribution pattern.

What the 99.5% figure does confirm is that the April 2026 rate increase is not a niche change affecting a small slice of the workforce. It applies, effectively, to everyone contributing at the current minimum — which is most of KiwiSaver's active membership.

IRD's guidance on the operational detail of the changes is available at ird.govt.nz/kiwisaver-changes.