ObjectivesFamily caregivers often feel insufficiently prepared for a caregiving role, experiencing challenges and demands related to care at home that may negatively affect their own quality of life. Supportive interventions have been shown to influence negative effects, but more studies are needed. Therefore, this study aims to explore potential effects of the Carer Support Needs Assessment Tool Intervention on preparedness, caregiver burden, and quality of life among Swedish family caregivers in specialized home care. MethodsThe study had a pre-post intervention design and was conducted at 6 specialized home care services in Sweden. Family caregivers who received the intervention completed a questionnaire, including the Preparedness for caregiving scale, Caregiver Burden Scale, and Quality of Life in Life-Threatening Illness - Family carer version, at 2 time points, baseline and follow up, about 5 weeks later. Data were analyzed using descriptive statistics and Wilcoxon signed-rank test. ResultsAltogether, 33 family caregivers completed the baseline and follow-up assessment. A majority were retired (n = 26, 81%) and women (n = 19, 58%) and two-fifths had a university degree (n = 13, 41%). The family caregivers had significantly increased their preparedness for caregiving between the baseline and follow-up assessment (Mdn = 18 vs. 20, p = 0.002). No significant changes were found on caregiver burden or quality of life. Significance of resultsThe results add to knowledge regarding the Carer Support Needs Assessment Tool Intervention's potential to improve family caregiver outcomes. Findings suggest that the intervention may be used to improve the preparedness for caregiving and support among family caregivers in specialized home care.