By Bob Souster

Impact investing refers to the deployment of capital with the explicit intention of generating measurable social or environmental benefits alongside a financial return. The emphasis on intentionality and measurability is crucial. Unlike traditional socially responsible investing, which historically relied on excluding undesirable sectors, impact investing seeks to create positive outcomes through proactive investment choices.

This article traces the development of impact investing, explains how it differs from traditional social interest lending and venture capital, explores its potential to generate both profit and sustainable outcomes, and assesses the opportunities and risks it presents for banks.

The origins of impact investing go back over 50 years. Community development finance in the US and the UK during the 1960s to 1980s demonstrated that lending to underserved communities could be both socially beneficial and financially viable. The rise of microfinance in the 1970s reinforced the idea that low income borrowers could be reliable clients when provided with appropriate financial products, whilst still remaining commercially viable for providers.

Ethical investment funds in the 1980s and 1990s introduced values based screening into mainstream investment practice, paving the way for more intentional approaches. In Malaysia, value-based intermediation has been around for over a decade, offering a model through which organisations can take a holistic approach to offering their services, incorporating the objectives of all stakeholders, including the community and the environment.

The term ‘impact investing’ gained prominence around 2007, largely through the work of the Rockefeller Foundation. This period coincided with the growth of social enterprises seeking hybrid capital, the increasing integration of environmental, social, and governance considerations into investment decisions and the expanding role of development finance institutions as investors.  The recognition that philanthropy alone could not meet global development challenges created further momentum.

Over the past decade, impact investing has moved into the mainstream. The United Nations’ Sustainable Development Goals provided a global framework that helped investors align risk capital decisions with measurable outcomes. Institutional investors began to seek long-term strategies aligned to sustainable objectives. Advances in impact measurement frameworks, such as the Impact Management Project, improved comparability and accountability. These will undoubtedly become more refined with advances in the deployment of artificial intelligence.

At the same time, a new generation of investors and employees demanded financial products that were compatible with their own values. Regulatory developments, including the European Union’s Sustainable Finance Disclosure Regulation, reinforced the need for transparency and rigour. As a result, impact investing now spans private equity, private debt, infrastructure, real assets and, increasingly, public markets.

Although banks have long provided lending that supports social outcomes, impact investing differs from traditional, socially oriented lending in several ways. Traditional lending is primarily driven by financial return and credit quality, with social benefits often arising indirectly. Impact investing, by contrast, embeds social or environmental objectives directly into the investment proposition. The intention to create impact is explicit, and the outcomes are quantified using structured frameworks.

Traditional lending is also constrained by regulatory capital requirements and established credit policies, usually based on the generally accepted canons of lending. Impact investing, particularly when undertaken by specialist funds or in partnership with development finance institutions, often involves a broader risk appetite and a wider range of funding structures, including equity, subordinated debt and guarantees. While banks may support socially beneficial projects, impact investors typically operate across a more diverse spectrum of financial instruments and are more willing to accept longterm exposure.

Impact investing also differs from conventional venture capital. Venture capital is primarily concerned with maximising financial return, with social benefits treated as incidental, or in extreme cases as entirely irrelevant. Impact investing, by contrast, is driven by a dual objective: financial performance and measurable impact. The time horizon is often longer, reflecting the systemic nature of many social and environmental challenges. Impact measurement is central to investment decisions rather than peripheral. Sector focus also differs: while venture capital tends to concentrate on technology and highgrowth sectors, impact investing frequently targets areas such as health, education, climate resilience, sustainable agriculture, and financial inclusion.

Impact investing is sometimes dismissed as ‘capitalism with a conscience’, implying an ethical gloss on conventional financial activity. However, impact investing has the potential to generate both profits and sustainable outcomes, regardless of whether investor motives are normative or instrumental.

Undoubtedly, many initiatives over the last 20 years have been normative, such as Sir Ronald Cohen’s early government-backed projects in the UK during the first decade of this century. One such project was commissioned by the government to rehabilitate offenders who had served time in prison (‘we will reduce reoffending rates by X% for a given level of investment’). Cohen was a venture capitalist who, at 60 years of age decided that he wanted to explore new ways of adding value to society. At 80 years of age, Cohen continues to be heavily involved in impact investing.

A cynical view might be that not all investors and institutions can act on purely normative motives. After all, Sir Ronald is a wealthy individual who made his fortune in venture capital and chose to pursue social interest goals at a time of life when most people are thinking about retirement. But even taking the instrumental view that investment can yield profits and serve social purposes and enhance the reputation of the provider, there are clear opportunities for banks and other financial institutions to be explored.

There are clearly windows of opportunity for normative investors, such as foundations and faith-based institutions. For them, impact investing offers a way to deploy capital in a manner consistent with their values while supporting systemic change. It bridges the gap between philanthropy and commercial investment, enabling capital to work towards long-term social and environmental goals. But investors motivated by instrumental factors will also see impact investing as attractive because it aligns with longterm trends such as climate transition, demographic change, urbanisation, and resource scarcity. It can reduce longterm risk by mitigating exposure to climaterelated losses, political instability, or governance failures. It can also create new markets, from offgrid energy solutions to circular economy business models. Companies with strong social and environmental performance often demonstrate greater resilience, stronger stakeholder relationships, and lower volatility, making them attractive from a risk-return perspective.

For banks, impact investing presents both strategic opportunities and emerging risks. Institutions that are flexible enough to adapt will shape successive generations of sustainable finance.

One major opportunity lies in the development of new product lines and revenue streams. Banks can design impact linked loans with pricing tied to specific impact indicators, create blended finance structures in partnership with development finance institutions or philanthropic organisations, and offer impact aligned private debt and equity products. Some banks have been building these considerations into their lending models for some time now. They can expand their role in green, social, and sustainability linked bond markets and provide advisory services to clients seeking to develop impact strategies. These activities can generate fee income, deepen client relationships, and differentiate the bank in a competitive market.

Impact investing also enhances risk management. Incorporating impact analysis into credit assessment can improve understanding of long-term risks, such as climate vulnerability or governance weaknesses. It can help banks manage reputational risk and build more resilient portfolios. As regulators increasingly require climate stress testing, sustainability disclosures, and alignment with taxonomies of sustainable activities, banks that develop impact capabilities will be better positioned for compliance and the creation of competitive advantage.

There are also internal benefits. Banks with credible impact strategies are more attractive to many younger professionals who want to work for progressive, forward-thinking employers. This supports talent recruitment and retention.

However, the rise of impact investing also brings risks. The most significant is the danger of ‘impact washing’, where institutions claim impact without delivering it. This can occur when impact indicators are vague, difficult or impossible to measure, or disputed by experts. Impact washing exposes banks to reputational damage, further regulatory scrutiny, and potential litigation.

Measurement and verification present further challenges. Impact is multidimensional and often industry specific, making it difficult to select appropriate metrics and ensure data quality. Poorly designed metrics can create perverse incentives, encouraging institutions to focus on easily measurable outcomes rather than truly meaningful ones.

Capital constraints and risk appetite also pose difficulties. Many impact projects involve early stage enterprises, emerging markets, unproven technologies or long payback periods. These characteristics may conflict with regulatory capital requirements or internal credit policies. Banks must therefore consider how to structure products that align with their risk frameworks while still supporting impactful activities.

There is also the risk of strategic dilution. If impact investing is treated as a niche activity rather than a core strategic priority, banks may develop fragmented product offerings and limited market presence. Specialist impact funds and fintechs may outpace traditional banks if they fail to integrate impact into their broader strategy.

Finally, banks with significant exposure to carbon-intensive sectors face transition risks as capital shifts toward sustainable alternatives. Impact investing accelerates this shift, making it essential for banks to reassess their long-term portfolio composition.

In summary, megatrends such as the transition to sustainable economies will be supported by impact investing, driven not only by banks and other financial institutions but also non-bank intermediaries, venture capitalists and not-for profit organisations. Advances in technology such as agentic artificial intelligence should enable a more scientific approach that will produce more reliable metrics through which risk decisions can be analysed and assessed. This can only facilitate more effective decision taking by those who manage and control banking functions.

Though the terminology changes, impact investing is not very far removed from what banks have already been doing in creating wealth and income, but in a sustainable way.

Robert (Bob) Souster is a Partner in Spruce Lodge Training, a consultancy firm based in Northampton, England. He lectures on economics, corporate and business law, management, corporate governance and ethics. He has worked extensively on the Chartered Banker MBA programme at Bangor University, Wales, since its inception, serving as both a Module Director and, currently, as a Moderator for ‘Ethics, Regulation and Compliance’ and ‘Financial Institutions’ Risk Management.’