PurposeIn January 2021, Spanish paid parental leave for fathers was fully equated with that for mothers. Is this facilitating working fathers developing an identity of caring fathers?Design/methodology/approachWe conducted qualitative research based on 31 interviews with heterosexual fathers residing in Spain, who had a child from January 1, 2021 onwards, who cohabited with the baby’s mother, and who were salaried. We also added two mothers with the same characteristics and seven human resources managers from large companies.FindingsThere has been a rapid acceptance and normalization of the use of these new equalized leaves. For many fathers this has been accompanied by the experience of a greater sense of “being legitimized” to engage in caregiving. The intensity of this process could be subject to two opposing forces. One in favor, especially when fathers care alone for as long as possible; and one against, when fathers assume the role of the mother’s helper and when the support of significant and relevant others is lacking in several domains, including the work place.Social implicationsWhether this ambivalence is resolved in favor of advancement could depend on how successful public policy is. Reforms of parental leave systems should encourage men to take on single-handed care, and companies should be encouraged to become more aware of the need for co-responsibility between fathers and mothers in childcare.Originality/valueSpain now has one of the most gender-equal parental leave systems in the world. It is important to know what meaning new fathers are giving to this advance and to what extent this is facilitating the emergence of a caregiving masculinity.