Purpose: This study aims to contribute to entrepreneurial intention research by examining the theory of planned behavior model in a longitudinal follow-up of the same individuals from a point at which they were studying until six to eight years after graduation and the link between entrepreneurial intention and actual behavior. The objectives of the paper are as follows: to examine the development and temporal stability of entrepreneurial intention and to examine the link between entrepreneurial intention and actual start-up behavior in a longitudinal setting. Design/methodology/approach: The data for this research originate in Finland and consist three data collection waves between years 2008 and 2018. In the second wave, 282 respondents were reached, and in the third wave, 89 respondents were reached. For examining the stability of entrepreneurial intention, latent growth curve modeling was used. In addition, a logistic regression analysis was conducted to examine the link between intention and behavior. Findings: The results suggest that entrepreneurial intention is a stable construct over time. High and low levels of entrepreneurial intention remain quite stable. Entrepreneurial intention measured during study time significantly explains entrepreneurial behavior both after one to three years (Exp ("B") 2,069***) and after six to eight years (Exp ("B") 1,830*). Gender and role models are significant factors in predicting entrepreneurial behavior. Originality/value: This study provides new information on the stability of entrepreneurial intention in a rare longitudinal setting. The study verifies the value of intention measures in predicting entrepreneurial behavior in the long term.