Financial management is important to overcome financial problems. Generation Z is a generation that is responsive to technological developments, so it has a consumerist lifestyle and has an impact on behavior that is less wise in managing finances. Apart from that, the greater income generation Z gets from parents' pocket money, scholarships and work wages has an impact on financial management. Therefore, generation Z has responsible behavior in spending so they avoid debt. The determinant of financial management which is the research objective is the influence of lifestyle and income on the financial management of generation Z students of the Management Study Program at Sanata Dharma University (USD). The research sample was active students of the USD Management Study Program class of 2021 and had taken Financial Management courses, totaling 89 respondents. Multiple linear regression with the SPSS 25 application as a data analysis technique. The research results show that lifestyle and income have a positive effect on financial management of Generation Z students of the USD Management Study Program. The implication is that Generation Z has a frugal lifestyle and is responsible for their income, so they have wise behavior in managing finances.