This chapter examines the critical role of private equity (PE) and venture capital (VC) in fueling the growth and scaling of FinTech companies. It explores both the significant opportunities—driven by disruptive potential and high-growth segments—and the inherent risks, such as regulatory uncertainty and cybersecurity threats, within FinTech investments. The chapter provides a detailed guide on structuring these investments, covering key aspects like valuation, ownership control, and liquidation preferences. A major focus is placed on the legal due diligence process, identifying essential areas for investor scrutiny, including corporate governance, intellectual property, and regulatory compliance. Furthermore, the chapter analyzes common exit strategies (e.g., IPOs, acquisitions) and underscores the importance of ongoing portfolio management and legal oversight to protect investments and ensure compliance. Ultimately, it presents PE/VC not merely as sources of capital but as active partners providing strategic guidance and risk management essential for long-term success in the dynamic FinTech landscape.