The Long-term Care (LTC) coverage is an important societal issue for the developed countries which requires the involvement of three specific players, i.e. the family, the private insurers and the public authorities. By taking into consideration the interdependencies between these agents, this paper aims at analysing theoretically the impact the informal care can have on the strategic interactions between parents and children within the family unit. More precisely, this paper explores the role played by the non financial costs of informal care on the decision mechanisms concerning the demand for private insurance on the one hand and the supply of informal care of the other hand as solutions for LTC coverage. In a static and simultaneous framework, our results show the existence of a substitutability relationship between the level of insurance chosen by the parent and the level of informal care provided by the child. This substitutability relationship is reinforced in the case of a non financial cost incurred by the child as a consequence of the informal care he/she provides.