This paper investigates the relationship between partner's mental health and individual life satisfaction, using panel data and calculating the monetary valuation of mental illness. Accounting for measurement error and endogeneity of income, partners' mental health has a significant association with individual well-being. The additional income needed to compensate someone living with a partner with a mental condition is substantial (ranges between USD 33,000 and USD 50,000). Further, individuals do not show adaptation to partners' mental illness. The results have implications for policy-makers wishing to value the effects of policies that aim to impact on mental health and levels of well-being.