This study aims to examine the effect of Income Level, Lifestyle, and Financial Knowledge on the Financial Behavior of Indonesian Migrant Workers (TKI). The population in this study amounted to 250 Indonesian Workers (TKI). The sample was selected using a simple random sampling method and 50 Indonesian Workers (TKI) were taken. The data analysis method used is Multiple Linear Regression. The results of this study prove that (1) Income Level has a significant effect on Financial Behavior, (2) Lifestyle has no significant effect on Financial Behavior, (3) Financial Knowledge has no significant effect on Financial Behavior, (4) Income Level, Lifestyle, and Financial Knowledge has a significant effect on Financial Behavior