PurposeWe aim to investigate systematic differences in reporting spousal care between caregivers and cared-for persons and their possible effects for the analysis of care regimes and correlation of care with health. Materials and methodsUsing information on care provided/received from the Survey on Health, Ageing and Retirement in Europe (SHARE), we estimate the prevalence of spousal care and discordance between caregivers and cared-for persons in the reporting of care among caregiving dyads. Multinomial regressions are used to estimate systematic differences in reporting spousal care. We then use multivariable logistic regressions to assess the association between discordance in reporting informal care and carer's self-rated health (SRH) and depression using the EURO-D scale. ResultsOnly 53.9 % of dyads report care that is confirmed by both spouses. Multinomial regressions show that agreement on care being provided/received is more common when women are caregivers, while men are likely to underreport when providing or receiving personal care. Prevalence of spousal care across care regimes is sensitive to who reports care. There is no effect on the association of care with SRH regardless of who identifies the carer, while the magnitude and statistical significance of the association between depression symptoms and care varies according to the choice of respondent. ConclusionsInformal care may be understated across Europe when relying solely on carer self-identification through description of tasks in surveys. From a policy standpoint, relying on self-identification of carers to access support or social benefits may potentially reduce the take-up of such benefits or support.