Criminal extortion and protection fees have emerged as significant threats to the sustainability of township businesses in South Africa, undermining entrepreneurship, formalisation, investment, and local economic development. While FinTech has transformed financial inclusion and digital transactions globally, its potential to disrupt cash-based extortion economies and strengthen the resilience of township enterprises remains largely unexplored. This paper investigates how FinTech innovations, including blockchain-enabled payment systems, mobile money, digital payment technologies, and complementary community-based digital platforms, can enhance economic resilience by reducing vulnerabilities associated with cash-based transactions and extortion. Drawing on the diffusion of innovation theory, this qualitative systematic literature review examined the opportunities, challenges, and institutional conditions influencing the adoption of these technologies within township economies. The findings suggest that FinTech innovations have the potential to reduce cash dependency, enhance transaction transparency, strengthen financial inclusion, improve collective reporting mechanisms, and build community resilience against extortion networks. However, their effectiveness depends on complementary investments in digital literacy, affordable digital infrastructure, institutional trust, enabling regulatory frameworks, and multi-stakeholder collaboration. The paper contributes to digital governance and FinTech scholarship by reframing technology adoption not only as a financial inclusion strategy but also as a governance mechanism that can enhance transparency, accountability, collective reporting, and economic security within vulnerable local economies. It further demonstrates how FinTech-enabled digital financial ecosystems can support the long-term sustainability of township economies through enhanced business resilience, secure digital transactions, and inclusive local economic development.