The reason why health insurance premiums are soaring
The 2025 Global Medical Trend Rates Report from Aon measures the percentage increase in medical plan costs per employee — both insured and self-insured — over the past year.
The report provides medical trend rate forecasts for 112 countries and locations worldwide.
According to the report, New Zealand’s medical trend rate surged from 7.4% in 2024 to 14.5% in 2025, marking one of the sharpest year-on-year increases.
Among countries in Asia-Pacific region, New Zealand recorded the second-highest medical trend rate in 2025, behind Kazakhstan in Central Asia at 22%. Other countries experiencing high rates were Papua New Guinea, Thailand and Vietnam.
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