“[Impact Bonds] are among the more exciting and potentially promising instruments to recently enter the innovative financing market… This approach transforms a development challenge into an investable opportunity rather [than] a problem.”- World Bank

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Pay for Success (PFS) model, also known as Impact Bonds, is a results-based contract whereby outcomes funders, service providers, and investors are bound by a common goal—the achievement of outcomes.

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Risk investors provide upfront capital and support service providers to reach the target outcomes.

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If the targets are met or exceeded, government (in the case of a Social Impact Bond) or philanthropic donors (in the case of a Development impact bond) pay back the investors their principal plus a return.

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Independent evaluators measure the success of the program in reaching the target learning outcomes, triggering payments. In general, the more successful the programme, the greater the return to investors, usually up to some cap.

In the decade since the first impact bond was launched in the UK in 2010, the market has grown exponentially. As of April 2020, Brookings Global Impact Bonds Database has identified 192 contracted impact bonds around the world, as well as many more in design.

Social Impact Bonds or Development Impact Bonds should not be confused with Social Bonds, Green Bonds or Sustainability Bonds. SIBs and DIBs are pay-for-success or results-based contracts or arrangement.

Social Bond

is any other type of bond instrument or debt impact investing instrument where the proceeds will be exclusively applied to finance or refinance in part or in full new or existing eligible social projects

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Green Bond

is a bond specifically earmarked to be used for climate and environmental projects

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Sustainability Bond

is a mix of green and social projects

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