Impact investing, blended finance and impact bonds

Impact investing is investing for a measurable social or environmental benefit as well as a financial return. Blended finance mixes money that expects a market return with philanthropic or public money that accepts more risk or less return, and impact bonds pay for results rather than activities, with investors carrying the risk that the results don’t come.

These tools sit between pure giving and ordinary investment, and they are often discussed alongside CSR, but they work very differently. This guide explains each in plain words, how they differ from grants and CSR, what India’s two best-known development impact bonds achieved, the main criticisms, and what an NGO needs before it takes part. It is for anyone curious about the field, for CSR teams asked to join such deals, and for NGOs weighing them up.

From grants to investments: a spectrum

The further down the table, the more the money behaves like an investment, and the more the organisation receiving it has to show results someone can measure.

What impact investing is

Impact investors put money into enterprises or funds, as equity, loans or guarantees, intending a measurable social or environmental benefit alongside a financial return. What sets them apart from other investors is intention and measurement: they set impact goals and track progress against them.

Investment needs something to invest in, such as shares or a loan that can be repaid. Trusts and societies have no shares, and a Section 8 company can’t pay dividends, so NGOs can’t offer investors equity returns. Where NGOs do work with impact investors, it is usually through outcome-based deals like those below, or through a separate social enterprise. The Impact Investors Council, an industry body, counted US$5.29 billion of equity invested in 256 impact-driven enterprises in India in 2025, against US$4.96 billion in 438 in 2024. These are estimates, on the council’s own definition of impact.

SEBI’s rules for alternative investment funds include Social Impact Funds (formerly social venture funds), which may invest in securities issued by social enterprises, including not-for-profit organisations on the Social Stock Exchange.

What blended finance is

Blended finance uses money that accepts more risk, or a lower return, to make a deal attractive to investors who want a market return. The catalytic money often comes from foundations, aid agencies or governments, in forms such as:

• first-loss capital, which absorbs the first losses if a project fails;
• guarantees, which promise to repay investors if a borrower can’t;
• grants for technical assistance, which pay for design, systems or evaluation that investors won’t fund;
• outcome funds, which pay for results achieved.

We haven’t found a reliable total for blended finance in India. One public vehicle tied to the Social Stock Exchange is the Capacity Building Fund at NABARD, with an authorised corpus of ₹100 crore and an initial ₹10 crore from NABARD, SIDBI, NSE and BSE, which helps non-profits prepare to raise money there.

How a development impact bond works

A development impact bond pays for results. Four parties are involved:

1. A risk investor provides the upfront money for a programme.
2. A service provider, usually an NGO, runs the programme.
3. An independent evaluator measures the agreed outcomes, such as children’s learning.
4. An outcome funder, such as a foundation, pays only for the outcomes achieved. If the targets are met, it repays the investor with a return; if they aren’t, the investor loses some or all of its money.

When a government is the outcome funder, the same structure is usually called a social impact bond. The idea is to move the risk of failure from the funder to the investor, and to give everyone a reason to manage for results.

India’s two best-known impact bonds

Educate Girls, Rajasthan (2015 to 2018)

Educate Girls, an NGO, ran a programme to enrol out-of-school girls and improve children’s learning in Rajasthan. UBS Optimus Foundation was the risk investor, putting in less than US$300,000; the Children’s Investment Fund Foundation was the outcome funder; and IDinsight evaluated the results, with most of the payment tied to learning and the rest to enrolment. The programme reached 116% of its enrolment target and 160% of its learning target, and the investor got its money back with a 15% return, according to Oxford University’s Government Outcomes Lab.

Quality Education India (2018 to 2022)

A US$11 million outcomes fund, led by the British Asian Trust with outcome funders including the Michael & Susan Dell Foundation and Tata Trusts, and with UBS Optimus Foundation as the risk investor, paid several Indian education organisations for results in primary schools. It reached 200,000 children. Children in the programme learnt 2.5 times as much as those in comparison schools, and twice as many reached age-appropriate learning levels. UBS Optimus Foundation earned an 8% return, and the British Asian Trust says the outcomes cost 46% less than had been priced.

Paying for results without a bond

An impact bond isn’t the only way to pay for results. Funders can also release grant tranches when agreed milestones are met, as many CSR agreements already do; pay a bonus for outcomes on top of a base grant; or share an outcomes fund with other funders.

For CSR teams, the CSR Rules set the limits. CSR money must be spent on activities within Schedule VII. Any surplus from CSR activities, including interest an implementing agency earns on CSR funds, can’t become business profit and must go back into CSR. And money paid to an agency counts as spent only when the agency uses it. So CSR can’t be used as an investment that returns money to the company, and a company that wants to act as an outcome funder should take advice on how outcome payments fit the Rules. The one market route open to CSR is subscribing to zero coupon zero principal instruments on the Social Stock Exchange, up to 10% of a company’s CSR spending. Our guide to collaborating on CSR covers pooled and shared funding.

FCRA: when the money is foreign

Both bonds above involved foreign foundations. Money from a foreign investor or outcome funder to an Indian NGO is normally foreign contribution: the NGO needs FCRA registration or prior permission, must receive the money in its FCRA Account at SBI’s New Delhi Main Branch, and can’t pass any of it to another organisation. So in a deal with several Indian providers, each must receive its own share directly into its own FCRA account; an Indian intermediary can’t take in foreign money and pass it on. See what FCRA is.

Risks and criticisms

Outcome-based finance has strong supporters and serious critics. The main concerns:

• What gets measured gets done. Paying for a few measurable outcomes can pull effort away from things that matter but are hard to measure, or towards the people easiest to help.
• Cost and complexity. Design, legal work, evaluation and management add costs that a simple grant doesn’t have.
• Who carries the risk. Investors’ returns are paid from philanthropic or public money that could otherwise have funded more services.
• Scale. Many bonds have been small pilots, so it is hard to know how their results would scale.
• Data and consent. Measuring outcomes means collecting data about people, often children, which must be handled lawfully and ethically.

None of this rules impact bonds out. It means they suit problems with clear outcomes and a reliable way to measure them better than others. Our guide to social return on investment looks at the limits of putting a price on social value.

What NGOs need to be ready

• Data you trust: baselines, regular monitoring and records an evaluator can check. See baselines and evaluation.
• A clear theory of change linking your activities to the outcomes you’d be paid for: see theory of change.
• Knowing your costs, including the cost of each outcome, so you can price a contract sensibly.
• Cash flow and governance strong enough to carry a multi-year contract.
• The right registrations, including FCRA if foreign money is involved.
• Consent and data protection for everyone whose data the evaluation uses: see data protection for NGOs.
• An appetite for public results, good or bad.

The Academy’s course Running a CSR Foundation covers designing programmes, making grants and managing evidence and reporting.