A person’s health status is one of the strongest determinants of well-being. The negative impact of poor health on subjective well-being may be moderated by providing care to individuals in need. In this paper, we investigate the relationships between receiving informal care and the amount of care received and subjective well-being among people aged 65 or older in selected European countries. Our analysis of data from the 6th wave of the Survey of Health, Ageing and Retirement in Europe (SHARE) showed that receiving regular informal care was associated with higher subjective well-being among older people in Northern European countries, and with lower subjective well-being among older males in Southern European countries. Moreover, we found that the perception of the amount of help received affected the subjective well-being of older people, as those who reported that the support they received was either insufficient or met their needs had lower subjective well-being than those who were not in need of care. Our results also showed that receiving formal care was negatively related with subjective well-being among older adults in Northern Europe and Central and Eastern Europe. In the context of population ageing and the growing need for care, social policies that support both sides of the caregiving relationship could enhance subjective quality of life.