This paper examines the impact of digital financial literacy (DFL) on household investment decisions in Surat City, India. The survey was collected from 107 individuals in Surat city. Primary survey of 107 households selected through a Convenience sampling design, the study measures DFL across four dimensions (digital access, basic digital skills, financial knowledge applied via digital tools, and attitude/confidence) and relates it to household investment behaviour (diversification, formal vs informal instruments, saving rate, and adoption of digital financial products). Data are analysed using descriptive statistics. Results (illustrative) indicate that higher DFL significantly increases the probability of investing in formal financial instruments, increases portfolio diversification, and raises monthly savings rates. Policy recommendations include targeted digital financial literacy programs, partnerships between banks and local NGOs, and product design that simplifies user experience for low-literacy groups. The paper contributes an empirically grounded framework linking DFL to concrete household investment outcomes in a rapidly digitizing Indian economy.