AbstractObjectiveGuided by Self‐Determination Theory, the study explored how maternal and paternal prenatal childbearing motivations relate to toddlers' adjustment via parental competence and parenting style.BackgroundAlthough considerable research shows consistent effects of parenting styles on child adjustment, why some parents adopt any specific style is unclear. To explore this, two broad types of childbearing motivations (autonomous and controlled) were conceptualized as early markers of parental competence, specific parenting styles, and subsequent child adjustment.MethodOne‐hundred and fifty‐five married, heterosexual, Israeli couples (N = 310) participated in a 2‐year longitudinal study from pregnancy through 20 months postpartum. Childbearing motivations were measured during pregnancy (T1), parental competence at 4 months postpartum (T2), and parenting styles and child behavior problems at 20 months postpartum (T3).ResultsA dyadic longitudinal path model revealed that childbearing motivations of both parents were positively associated with an adaptive, authoritative parenting style via parental competence. Moderate indirect effects of controlled childbearing motivations on toddlers' behavior problems were evident through the less adaptive—authoritarian and permissive—parenting styles.ConclusionThis study underscores the importance of childbearing motivations as early indicators of future parenting styles and child adjustment and sheds light on parenting as a complex dyadic process.