Solving Social Issues
with New Forms of Economies

We initiate actions to build a society that can resolve social problems and autonomously and sustainably deliver diverse values.Our unique position allows us to work with an array of stakeholders. We are aiming to realise a new ecosystem that transcends the conventional frameworks to lasting system change.
To build a sustainable and autonomous society where social problems are resolved and diverse values are created
The goal of SIIF is an inclusive society where the dreams of both individuals and communities are realized. We believe this happens when individuals and communities continually and actively seek, choose and create a society.
To build an ecosystem for the circulation of social and economic resources that goes beyond the frameworks of self-help, mutual help and public help
Self-help centered on the market economy. Public assistance based on a centralized system of redistribution. Mutual help and reciprocal aid, which are forms of interdependence. SIIF aims to build a new model for the circulation of resources such as funds, people, and knowledge that transcends these frameworks, and to present diverse benchmarks for measuring the value of social outcomes.

We aim to build an ecosystem for the circulation of social and economic resources across four key areas.
Opportunity gap
Community revitalization
Healthcare
Ocean
(Fiscal 2022 – Fiscal 2025)
Showcase examples that represent innovation in our key areas of focus.
Consolidate practical experiences to systematic knowledge and insight.
Orchestrate collective actions to diverse practitioners aiming to develop new forms of economies.
IMPACT INVESTMENT
Supported 60+ portfolio companies with hands-on collaboration and capacity-building
PUBLIC-PRIVATE PARTNERSHIPS (PPPS)
Serve as the coordinating office for the Impact Consortium,
a cross-sector platform initiated by the Government of Japan
PRIVATE-SECTOR MOBILIZATION
Launched the Japan Impact-driven Financing Initiative, with 84 organizations participating as of 2025
JOINT RESEARCH AND GLOBAL COLLABORATION
Co-produced a case study and documentary film series tracing the 10-year evolution of Japan’s impact economy, in partnership with the Skoll Centre at the University of Oxford
GLOBAL CONFERENCES
Hosted the GSG Impact Global Leadership Meeting (GLM) in Kyoto, welcoming global thought leaders and practitioners
PUBLIC ENGAGEMENT
Co-hosted Social Impact Day in Japan +
Organized a high-profile gender equality event at the Osaka Expo

We have published the 2023 Impact Review, which reviews our activities over the past five years starting from our days as the Foundation for Social Investment. This report extracts what we have learned through our activities, and presents our current mid-term strategy.
SIIF serves as a hub for Japan’s impact economy.
SIIF continues to pioneer systemic social innovation through the creation of an Impact Economy — where impact becomes a core measure in finance, business, consumption, and governance.