Compulsory KiwiSaver is a payroll cost not a retirement debate

A rare point of agreement between National and Labour

Whoever forms the next government, compulsory KiwiSaver is on the way. The NZ Herald’s editorial put it plainly: the policy direction is set. The scheme now holds $129 billion in funds under management across 3.4 million members as at 31 March 2026, but the shine comes off fast when you look at who is actually paying in.

Around 1.05 million working-age members, 30% of the 18-to-65 cohort, are making no contributions at all. That share has climbed from about 20% in 2010, and the FMA flagged it as a concern in its 2025 annual report. Compulsion is the political fix. For employers, it is a cost line.

The rate escalation nobody is arguing about

Here is the part that matters most for medium-term planning: both National and Labour want to lift employer contributions from the current 3.5% to 6% by 2032, with compulsion starting July 2028.

Under National’s plan, contributions become mandatory for all workers including the self-employed, who would pay 4% of income, and both employee and employer rates rise to 6%. Under Labour’s version, employer contributions become compulsory regardless of whether the employee pays in, with employees free to reduce or pause their own contributions.

That difference is not academic. Labour’s looser employee rules mean an employer could be paying 6% into a fund the worker contributes nothing to, and providers warn that giving people the option to opt out tends to mean they do. Either way, the employer pays.

Where the real exposure sits

For a business whose staff are already fully enrolled and contributing, the change is a phased 71% increase in the employer contribution per head, from 3.5% to 6%. Painful, but predictable.

The step-change hits employers with large numbers of non-contributing staff. And that is not evenly spread. IRD’s February 2026 data shows the single biggest group of non-contributors, 660,851 members, earns $10,000 or less. These are part-timers, casuals and seasonal workers concentrated in hospitality, retail, agriculture and care, the exact sectors where payroll dominates the cost sheet and margins are thin.

Do the maths on one worker on $50,000 who currently contributes nothing. Compulsion means the employer starts paying $1,750 a year at 3.5%, rising to $3,000 a year at 6%. Multiply that across a workforce heavy with non-contributors and it compounds quickly.

Someone has to wear the cost

BusinessNZ economist John Pask was blunt in June 2026: “There’s no such thing as a free lunch, the extra money must come from somewhere, potentially offset by reduced training, wages, or salaries.” Tribe Recruitment Group chief executive Bruce Pilbrow warned in June 2026 that smaller businesses would struggle and predicted more of them would shift to total remuneration packages to absorb the obligation.

Simplicity’s Shamubeel Eaqub argued in June 2026 the impact would be “very minor” because most working people already contribute. True at the aggregate level. Cold comfort to a cafe owner in Queenstown whose seasonal roster is full of non-contributors.

The total remuneration trap

The escape hatch is total remuneration, where the employer contribution is baked into the pay package rather than added on top, so the worker effectively funds both sides. It is a short-term cost-management tool, but it is squarely in the crosshairs. Mary Holm’s July 2026 analysis recommended banning these arrangements as a safeguard for low-wage workers, and the Financial Services Council wants them phased out as a precondition for compulsion. If that happens, employers relying on total remuneration face the full incremental cost plus a round of awkward wage renegotiations.

The upside worth naming

There is a genuine prize here. Australia’s superannuation scheme, running since 1992, is worth A$4.77 trillion and underpins the depth of its capital markets. The average Australian balance is NZ$223,400 against KiwiSaver’s $40,000. A KiwiSaver pool growing toward that scale means more domestic capital for equity, infrastructure and debt, a structural win for any business that raises money or competes with Australian-listed peers.

But that payoff arrives over decades. The payroll cost arrives in 2028. Smart operators should already be modelling the path from 3.5% to 6%, auditing how many of their staff currently sit outside the scheme, and reviewing any total remuneration arrangements before they are legislated out. This is no longer a policy debate to watch. It is a line item to plan for.

Sources

• Compulsory KiwiSaver is coming no matter who forms the next Government – Editorial (2026-09-17)
• KiwiSaver on hold: More than 1 million members aged 18 to 65 are not contributing (2026-09-09)
• Workers could wear cost of National’s proposed KiwiSaver changes (2026-06-22)
• Can New Zealanders really afford compulsory KiwiSaver? (2026-06-22)
• Providers push for full KiwiSaver compulsion as parties split on employee rules (2026-09-15)
• KiwiSaver Annual Report 2025 (2025-09)
• KiwiSaver Members by Income and Contribution Rates – OIA Response (2026-02-18)
• Compulsory KiwiSaver – the pros and cons and the group that risks being left behind (2026-07-03)