This study examines the effect of financial literacy and fintech adoption on the investment decisions of Indonesia’s Generation Z investors. Although digital platforms have made capital-market access easier than ever, national survey data show that the financial literacy of young adults still lags behind that of older working-age cohorts, raising the question of whether easier access is matched by the capability to make sound investment decisions. Using a quantitative associative design, primary data were collected through a structured online questionnaire from 400 Generation Z respondents (born in 2000 or later) in Java and outside Java who had used at least one digital financial or investment platform, selected through purposive quota sampling. The data were analyzed using multiple linear regression after validity, reliability, and classical assumption tests. The results show that financial literacy (B = 0.341, p < 0.001) and fintech adoption (B = 0.298, p < 0.001) are each positively and significantly related to investment decisions and are jointly significant (F = 61.638, p < 0.001), explaining 23.3% of the variance in investment decisions (Adjusted R² = 0.233). These findings indicate that sound investment decisions among Generation Z depend on both knowledge-based capability and technology-enabled access. Financial educators, fintech providers, and regulators should therefore integrate financial-literacy content into digital investment platforms rather than treating investor education and platform access as separate agendas.
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