Background Next of kin to older adults over 65 years in municipal home care are concerned whether their older adults' needs are being met. In municipal home care, the registered nurses' leadership is important and complex, entailing multi-artist skills involving the older adults and their next of kin. Yet, little is known about next of kin's experiences of registered nurses' leadership. Thus, the aim of this study was to explore next of kin's experiences of registered nurses' leadership close to older adults in municipal home care. Methods Individual telephone interviews were conducted with next of kin (n = 11) of older adults from April to September 2020 in two municipalities in western Sweden. Data were analysed using qualitative content analysis. Results The results are presented with the theme, registered nurses do what they can, including two categories, interaction and competence, and the subcategories, relationship, communication, availability, responsibility, team leadership and cooperation. Registered nurses' leadership was experienced as a balancing act between their commitments and what they were able to achieve. Conclusions Next of kin's experiences of registered nurses' leadership can contribute knowledge that will strengthen and prepare registered nurses for their leadership roles. This knowledge can support the development of policies for organisational preconditions that ensure quality and safe care to older adults in municipal home care.