Resumen: Our objective is to analyse the decision to become an entrepreneur in Spain, with a special focus on the role of household finances in making that decision. To that end, we compare earnings for both salaried workers and entrepreneurs, and develop a theoretical framework to characterize entrepreneurship outcomes by a production function. This model is then estimated by binary Maximum Likelihood estimation regression models, employing Spanish micro-data from the Financial Survey of Families (Encuesta Financiera de las Familias), 2011. Our results show that household assets (vehicles, real estate, and investments) and the financial security that they provide, also affect entrepreneurship by encouraging individuals to become entrepreneurs. Idioma: Inglés Año: 2016 Publicado en: International Journal of Entrepreneurship (United States) 20, 1 (2016), 57-73 ISSN: 1099-9264 Originalmente disponible en: Texto completo de la revista