Highest-spending households were the hardest-hit group, with living costs rising 7.3 per cent. This was followed by Māori, who saw their costs increase 7.1 per cent.
Beneficiaries experienced a 6.2 per cent increase in living costs.
The household living-costs price indexes (HLPIs) measure how inflation affects 13 different household groups.
“For each of the household groups, the cost of living increase was above 6 per cent for the 2023 year,” Stats NZ’s Mitchell said.
“Groups with a higher proportion of spending on mortgages had interest payments as the largest annual contributor to their cost of living. For groups that paid less in interest payments, their cost of living was still being driven by food and housing costs.”
The average household living cost of 7 per cent compares to an annual inflation figure of 4.7 per cent for the December quarter.