A Tale of Two Social Insurance Systems in South Korea and Taiwan: A Financial Risk Protection Perspective

Universal Health Coverage (UHC) is a widespread policy goal in the 21st century. The aim is to protect people from financial risk while promoting their access to good-quality care. This study examined the social insurance systems of South Korea and Taiwan to explore the critical challenges of achieving effective UHC. By assessing the impact of UHC on financial risk protection (measured by out-of-pocket payment share and catastrophic payment headcount), we found that when South Korea inaugurated its National Health Insurance (NHI) program with a limited benefits package and high cost sharing, it did not reduce the financial burden. Meanwhile, we observed a drop of 5 to 6 percentage points in the catastrophic payment headcount in Taiwan, which offered a universal and rather comprehensive benefits package with a modest cost-sharing design under its single-payer NHI system. The political-economic context of the UHC policy evolution was further explored through an in-depth discussion. We conclude that to provide sufficient financial risk protection against unexpected medical expenses, the design of the insurance scheme, in particular the risk-sharing mechanism, not only matters but is also the key to success.