Savings at the Frontier is a partnership between Mastercard Foundation and OPM that aims to improve the financial inclusion of low-income individuals and communities in sub-Saharan Africa. Savings at the Frontier (SatF) is a six and a half year programme (2015-2022) that seeks to bridge the gap between the supply of formal financial services and informal savings mechanisms (ISMs), so that ISM users have a greater choice and use of financial services that best meet their needs. SatF is selecting and supporting nine financial service providers (FSPs) in Ghana, Tanzania, and Zambia to help them test and deepen commercial relationships with ISMs. We aim to scale up financial services for at least 250,000 rural and semi-urban ISM users across these three countries via innovative FSP-led business models. SatF is also producing evidence and sharing learning that can contribute to the development of effective, scalable business models for financial services delivery in frontier markets.