In 2014, Indonesia launched a single payer national health insurance scheme or the JKN, expecting to cover the entire population by 2024. This study aims to assess the equity of the health financing system in Indonesia during 2015 – 2019 by analysing a secondary analysis of nationally representative data from the National Socioeconomic Survey of Indonesia. Findings show that the overall health financing system was progressive from 2015 to 2018, but continuously declined year by year and became mildly regressive in 2019. In summary, Indonesia has a way to improve an equitable health financing system to ensure financial risk protection of the population.