The five-year squeeze
Between June 2021 and June 2026, New Zealand households absorbed some of the fastest price growth in a generation. Petrol is up 43%. Council rates are up 54%. Butter — a staple that became a headline all of its own — is up 66%.
But the quiet mover is insurance. The Stats NZ health-insurance price index rose 75% over those five years, and dwelling insurance 59%. Unlike bread or petrol, these aren't prices you see at a checkout. They arrive once a year in a renewal letter, they're paid by direct debit, and most of us never look closely.
The bill nobody reviews
Here's what makes insurance different from everything else on this list: when bread gets expensive, you notice at the shelf, and you can switch brands on the spot. When your insurance premium climbs, most people do one of two things — nothing, or cancel.
Both can be costly. Doing nothing means you may be paying 2026 prices for cover that was designed around your 2021 life — the mortgage, the job, the family you had then. Cancelling means giving up protection precisely when replacing it later (older, possibly with new health history) may cost more or not be possible on the same terms.
There's a third option most people skip: getting the cover checked. Not resold — checked. What are you actually covered for? What would it pay? What should it cost in today's market? An independent review answers those questions, and in New Zealand a licensed adviser can do it free, because advisers are paid by insurers rather than by you.
The data
| Category | Change Jun 2021 – Jun 2026 | Source |
|---|---|---|
| White bread | +77% | Stats NZ SAP0149 |
| Health insurance | +75% | Stats NZ CPI SE911404 |
| Butter | +66% | Stats NZ SAP0131 |
| House insurance | +59% | Stats NZ CPI SE911402 |
| Council rates | +54% | Stats NZ CPI SE904403 |
| Petrol | +43% | MBIE weekly fuel monitoring |
| Milk | +38% | Stats NZ SAP0127 |
| Power (electricity) | +33% | Stats NZ CPI SE904501 |
| Groceries | +32% | Stats NZ FPI SE9013 |
Why health insurance rises differently
Most life and health insurance in New Zealand is priced on what the industry calls "rate for age" — the premium steps up automatically each year as you get older, on top of any general price increases the insurer applies across the board. That's why your renewal letter almost always shows a higher number, even in years when claims and inflation are quiet.
It also means the increase you experience personally can be larger than the 75% category average — five years of age-steps compound with five years of price rises. If your premium has grown faster than you expected, that's usually the mechanism, not a mistake.
None of this makes the cover wrong. It makes it worth checking — because the same five years that raised the price may also have changed what you actually need.