This chapter examines recent developments of the case of Thai welfare state development. Thailand’s welfare state development can be best understood through an ideal-typical welfare regime theory, which situates the country within the pro-welfare conservative model. In this framework, welfare expansion is not primarily driven by egalitarian ideology but rather by pragmatic political considerations under conservative or centrist governments. Thailand has gradually invested in key pillars such as health care, education, and social insurance, while also implementing large-scale cash transfer programme. The Universal Coverage Scheme (UCS), introduced in 2001, stands out as a landmark achievement in extending access to health care, reflecting the incremental universalization trend typical of this regime type. Financing of Thailand’s welfare system relies heavily on taxation.. However, unlike fully universalist systems, benefits are fragmented across occupational categories, with civil servants receiving more generous entitlements than private-sector or informal workers. Fiscal space remains constrained, as the tax base is still narrow and social security funds face demographic pressures from population aging. The key challenges lie in fiscal sustainability, inequality of coverage between groups, and informality in the labor market. Strengthening revenue capacity, broadening contributory schemes, and ensuring equity across occupational and regional divides remain central to the future of Thailand’s welfare state. The welfare model of Thailand can be analyzed through the lens of ideal-typical welfare regime theory, as advanced by Aspalter (2006, 2017, 2023). This framework extends beyond Esping-Andersen’s well-known Three Worlds, by offering a broader set of regime types, among them the Pro-Welfare Conservative Welfare Regime (a.k.a. the ideal-typical East Asian Welfare Model). Thailand’s welfare state system fits most closely this welfare regime type.