OBJECTIVES: Hungary runs a compulsory, solidarity based health insurance based system with a single payer. However, there is an increasing market of voluntary health insurance schemes and funds. The aim of this study is to analyze the voluntary health insurance market in Hungary. METHODS: Our analysis is based on annual data from 2002 to 2013. The analysis of the number of funds and membership figures is based on end of the year data, the analysis of services and payments is based on annual data. We performed time series analysis and calculated dynamic and intensity relative numbers. RESULTS: In 2002, a total of 151,220 members were registered in 35 funds, increasing to 1,033,615 members in 31 funds by 2013. The total revenue of the health funds was HUF 6.699 billion in 2002, HUF 35.097 billion in 2007, and HUF 50.923 billion in 2013. The distribution of health fund payments as a percentage of consumption showed: in 2007, 88.4% supplementary health insurance services, including 16% supplementary services within the framework of social security benefits, 77% self-care services provided by the health funds (67.1% medicine, 31.2% medical device), while in 2013, 98.2% supplementary health insurance services, including 18.6% supplementary services within the framework of social security benefits, 80.7% self-care services provided by the health funds (71.2% medicine, 28% medical device). Health fund payments for lifestyle improvement services reached 11.6% in 2007, and 1.5% in 2013. CONCLUSIONS: Reduction in the number of health funds, and an increase both in membership and revenues indicate the consolidation of the function of health funds. The distribution of payments by consumption shows no significant progress: medicine and medical device still play a major role, and disease prevention and health care services still represent a very small proportion.