Published Paper Details:

India's digital payments are rapidly growing by UPI Aadhaar enabled payments systems and more ways in financial transaction's literacy may constrain safe, sustained use among millennials (born in between 1981-1996). We are using most of primary data and also recent secondary data in this paper such as using habits of digital payment uptake and synthesizes evidence on financial literacy levels and proposes and tests a theory driven framework using to literacy to adoption and quality of use for the security practices, budgeting techniques. We also collect Global Findex indicators, RBI Digital Payments Index (RBI-DPI), NPCI UPI statistics, OECD/INFE literacy to measures Indian literacy surveys. We find strong usages of UPI more than 19.4 billion transactions in July 2025 which shows modest average literacy about 27% adults financially literate, we are also suggesting a usage understanding in millennials and gap between those who are not using the digital payments. We propose hypotheses and outline a survey design to estimate effects of knowledge, digital financial literacy and trust on intention and behaviours, with implications for product design and policy.