Māori experience considerable inequity in access to primary health care, according to a study using data from the New Zealand Health Survey (2011/12 to 2018/19). Pooled data included 107,231 individuals, of whom 22,292 (21%) were Māori. Overall, 22% of Māori compared with 13% of non-Māori reported a cost barrier to seeing a GP (age- and year-adjusted odds ratio 1.71 (95% confidence interval [CI] 1.61-1.81). Furthermore, 14% of Māori compared with 5% of non-Māori reported a cost barrier to collecting a prescription (age- and year-adjusted odds ratio 2.97 (95% CI 2.75-3.20). In a fully adjusted model, age, sex, low income, and poorer underlying health were determinants of both cost barriers, and deprivation was additionally associated with the cost barrier to collecting a prescription.