Abstract Background In many European countries, including the Netherlands, the healthcare system is financed according to the principles of solidarity. Although people are generally highly supportive of collectively financed healthcare services, some groups are considered more deserving of health insurance benefits than others. Increasing knowledge of the health risks of certain lifestyle choices and pressure on healthcare systems may result in changing opinions on the allocation of resources. Our study looks into changes in citizen’s opinions on the deservingness of different groups between 2013 and 2023. Methods Questionnaires were sent out to samples of 1.500 members of the Dutch Health Care Consumer Panel in 2013, 2015, 2017, 2019, 2021, and 2023. Response rates varied between 42% (2015) and 56% (2021). Deservingness was studied by asking respondents about their opinions on the amount of health insurance premium for different, opposing groups, for example older and younger people and those with a healthy and unhealthy lifestyle (group A should pay more, both groups should pay the same amount, or group B should pay more). Multinominal logistic regression models were used to examine changes in deservingness opinions over time. Results Our study showed year-to-year fluctuations in opinions on the premium amount for health insurance for different, opposing groups. However, no distinct increases or decreases were observed over the whole time period. This applies to both the general population and to people who do and do not belong to the different groups. Conclusions Although there are differences in the degree to which groups are considered deserving of health insurance benefits, deservingness opinions were found to be fairly stable in the Netherlands between 2013 and 2023. Our results do not point to increasing support for premium differentiation based on personal characteristics. This suggests that support for solidarity in healthcare financing is not in decline. Key messages • Opinions on the deservingness of health insurance benefits of different groups were found to be fairly stable in the Netherlands between 2013 and 2023. • No evidence of increasing support for premium differentiation based on personal characteristics was found.