Australian intended parents' decision-making and characteristics and outcomes of surrogacy arrangements completed in Australia and overseas.

Markets for international surrogacy often arise in jurisdictions with limited regulations regarding assisted reproductive technologies. In some countries, like Australia, regulated domestic surrogacy services are often sidestepped for international providers. This study describes how Australian intended parents decide where to pursue surrogacy and compares the characteristics and outcomes of arrangements completed within and outside of Australia. The findings show that, although intended parents preferred undergoing surrogacy in Australia, perceiving the process as too long and complicated was a common reason to pursue an international arrangement. Multiple embryo transfer, anonymous gamete donation, and a lack of counselling were common in international surrogacy arrangements. When compared to surrogacy arrangements completed in Australia, where single embryo transfer is mandatory for surrogacy cycles, the rates of multiple birth, preterm birth and neonatal intensive care in international surrogacy were higher. These findings raise concerns about the health and welfare of international surrogacy participants, particularly the surrogates and children. In lieu of any international instrument regulating surrogacy, improving access to surrogacy at a domestic level would reduce the number of people engaging with international arrangements and in turn, reduce the potential for harm.