What is sustainable finance?

Sustainable finance directs money to eco-friendly projects, fair workplaces, and clean technologies, helping fight climate change and build a healthier, fairer world for everyone’s future.
By
Oskar Mortensen
March 11, 2026
5 min read
What is sustainable finance?

Over $30 trillion in assets worldwide are now managed with sustainability in mind. This shows how serious money managers have become about backing businesses that protect the environment and society.

More than 80% of investors say they consider environmental, social, and governance (ESG) factors when making decisions. This shift means finance is no longer just about profits—it’s about creating a healthier planet and fairer communities.

By choosing sustainable finance, money supports clean energy, fair workplaces, and less waste. It helps fund projects that fight climate change and build a stronger, more circular economy for everyone’s future.

Definition: sustainable finance

Sustainable finance means using money to support projects and companies that protect the environment, promote social good, and act responsibly. It avoids funding harmful activities like fossil fuels, instead backing clean energy and fair workplaces to help the planet and society thrive.

Sustainable finance avoids funding harmful activities like fossil fuels. It means using money to support projects that protect the environment and promote social good.

Think of sustainable finance like choosing to invest your savings in a company that builds wind farms instead of a coal mine. Your money helps fight climate change while still aiming for a financial return, making your investment work for the planet and your future.

How sustainable investing found its footing

What sparked the idea of mixing money with environmental care? Long before climate talks became headline news, some financial thinkers began seeing value in supporting both profits and planet health. This early spark set the stage for what we now call sustainable finance.

Back in the 1970s, rising environmental concerns nudged the financial world to rethink its impact. The United Nations Environment Programme (UNEP) started working with banks to create strategies that balance business success with ecological goals. This partnership laid the groundwork for sustainable finance, blending financial returns with social and environmental benefits.

Global events helped push this movement forward. The 1992 Earth Summit brought worldwide attention to environmental challenges, leading to new alliances between finance and sustainability. Later, initiatives like ethical banking in Europe and international agreements emphasized the need for green investments.

These steps show how finance can be a powerful tool for positive change. Sustainable finance isn’t just about money—it’s about building a future where business and the environment thrive together.

4 examples on how money supports a healthier planet

Here are four ways that financial choices can help protect the environment and promote responsibility:

  • Green bonds: These are loans specifically for projects that benefit the environment. Investors fund things like renewable energy or clean water, encouraging eco-friendly development.
  • Impact investing: This means putting money into companies that aim to solve social or environmental problems. The goal is to earn returns while making a positive difference.
  • Carbon pricing: This approach assigns a cost to carbon emissions, pushing companies to reduce pollution. It financially rewards cleaner production methods.
  • Sustainability-linked loans: These are loans with interest rates tied to a company’s environmental goals. If the company meets targets, they pay less, motivating greener practices.

Not all financial activities promote sustainability. Many investments still support industries that harm ecosystems or ignore waste and pollution. Changing where money flows can reshape business priorities toward a circular economy.

Terms related to sustainable finance

More investors are looking at how their money impacts the environment and society when making decisions.

Term Description
Green finance Funding projects that help protect the environment or reduce pollution.
ESG criteria Standards that evaluate a company’s impact on environment, society, and leadership.
Impact investing Investing in companies or projects that create positive social or environmental change.
Corporate social responsibility (CSR) When companies take responsibility for their effects on society and the environment.
Climate finance Money directed towards activities that address climate change and its impacts.
Socially responsible investing (SRI) Choosing investments based on ethical and social values, not just profits.
Circular economy finance Funding models that support reuse, recycling, and reducing waste in products and materials.
Ethical banking Banks that focus on responsible lending and investments that benefit people and planet.

Frequently asked questions on sustainable finance

Find out how sustainable finance supports a greener, fairer economy through smart money choices.

What is green finance?

Green finance means investing in projects and companies that help protect the environment, like clean energy or pollution reduction. It supports the shift to a low-carbon, sustainable economy.

How does climate finance work?

Climate finance provides money to help communities and countries reduce greenhouse gas emissions or adapt to climate change impacts. It funds renewable energy, flood defenses, and more.

What are ESG criteria?

ESG stands for Environmental, Social, and Governance. These criteria help investors evaluate how responsibly a company operates, covering things like pollution, worker treatment, and leadership ethics.

What is impact investing?

Impact investing targets companies or projects that generate positive social or environmental effects alongside financial returns. It’s about doing well by doing good.

How does circular economy finance fit in?

This type of finance supports businesses that design products to be reused, repaired, or recycled, helping reduce waste and keep resources in use longer.

What is ethical banking?

Ethical banking means banks choose to fund only projects aligned with social and environmental values, avoiding harmful industries and promoting positive change.

How is corporate social responsibility related to sustainable finance?

CSR is when companies voluntarily take action to be socially and environmentally responsible. Sustainable finance rewards those efforts by directing funds toward responsible businesses.