Despite economic progress, government efforts, and increased healthcare investments, health deprivation continues to persist in the countries of Brazil, Russia, India, China, and South Africa (BRICS). Hence, addressing the growing demand for health financing in a sustainable way and adopting unique approaches to healthcare provision is essential. This paper aims to review publications on the existing health financing systems in the BRICS countries, analyze the core challenges associated with health financing, and explore potential solutions for establishing a sustainable health financing system. This paper adhered to the PRISMA guidelines when conducting the keyword search and determining the criteria for article inclusion and exclusion. Relevant records were obtained from PubMed Central using nine keyword combinations. Bibliometrics analysis was carried out using R software (version 4.1.3), followed by a comprehensive manual narrative review of the records. BRICS countries experienced increased health expenditure due to aging populations, noncommunicable diseases, and medical advancements. The majority of this increased spending has come from out-of-pocket payments, which often lead to impoverishment. Due to limited fiscal capabilities, administrative difficulties, and inefficiency, providing comprehensive healthcare through public funding alone has become exceedingly difficult for these countries. Public-private partnerships are essential for achieving sustainable health financing and addressing challenges in healthcare provision.