The Midwifery continuity of carer model: a business development resource (the Resource) has been developed to support managers to implement a midwifery continuity of carer (MCOC) model and/or increase the proportion of women in their service who are currently cared for under the MCOC model. Unlike the traditional model, MCOC is based on the principle of maintaining the same midwife through pregnancy, labour and birth and the early parenting period. It focuses on relationship-based care to deliver better outcomes. MCOC is also commonly known as Midwifery Group Practice (MGP) or Caseload Care. Expanding sustainable MCOC models is a priority for women in all Australian states and territories and is expected to provide long-term value based healthcare. As part of the Resource, a number of tools are provided which support practical cost modelling such as interactive cost templates. As well as these tools, practical examples are included to assist Hospital and Health Services (HHSs) to enact service redesign, resource allocation and scaled expansion of MCOC models. Whilst the resource has been developed with a Queensland focus, it has the capacity to be used, after relevant local cost and funding adjustments, by health services in other Australian states and territories. The Resource, through targeting quality improvement in specific clinical outcomes, can also be used to demonstrate the value and impact of implementing and scaling up MCOC models.