Why sustainable finance in private banking has become significantly more powerful and influential

For much of the past decade, sustainable finance has been viewed primarily through the lens of investment.

The conversation has focused on ESG funds, responsible investing and directing capital towards businesses with strong environmental, social and governance credentials. While these are still important components of sustainable finance, they represent only a part of a much bigger picture.

Today, sustainability is a lens through which people make financial decisions across every aspect of their lives.

Investment portfolios remain central to these decisions, but they have been joined by considerations around financing property, improving energy resilience, structuring businesses, planning estates and preparing wealth for future generations.

Evolution of decision-making

A client upgrading a home or commercial property may now weigh the long-term value of solar, backup power, water efficiency and lower operating costs.

A business owner may consider whether sustainability-linked investments can improve resilience, reduce future regulatory exposure or protect enterprise value.

A family reviewing its estate plan may ask how wealth can be transferred in a way that supports both continuity and responsible stewardship.

These are not abstract sustainability choices; they are financial decisions shaped by a broader understanding of value, where returns, resilience, efficiency and legacy increasingly need to be considered together.

Broader shift

The shift is indicative of a broader change in how affluent families think about wealth.

Financial success is no longer measured solely by investment performance. Increasingly, it is also about resilience, adaptability and the ability to preserve and grow wealth in a world shaped by changing environmental, economic and regulatory realities.

As a result, sustainable finance has become significantly more powerful and influential.

Rather than existing as a specialist investment category, it is now key to helping clients make better decisions across their entire financial lives.

They don’t just want products; they expect advice that helps them understand how sustainability intersects with their broader financial objectives.

This has created a valuable opportunity, but also a key responsibility, for private banking, given its relationship-driven service model that gives private advisors a complete view of each client’s finances and life.

The role a private advisor plays

A private advisor is expected to understand not only the client’s investment portfolio, but also their banking requirements, lending needs, business interests, property ownership, offshore assets, succession planning, family governance and lifestyle preferences.

This broader perspective creates an opportunity to connect choices that might otherwise have had to be considered in isolation.

Financing solar infrastructure, for example, is not simply an environmental choice.

Done right, it can strengthen energy resilience, improve operational efficiency, protect property values and reduce long-term operating costs.

Likewise, an investment decision should not be viewed independently from estate planning or family governance. Together, these decisions contribute to the long-term sustainability of wealth itself.

Against this backdrop, sustainable finance is less about selecting a specific investment solution and more about building a financial and wealth creation strategy that considers resilience, efficiency and long-term value creation.

Multi-faceted approach, single framework

To deliver this more integrated service, private banks must move beyond standalone sustainability products or siloed thinking.

Investment advice, lending, wealth structuring, fiduciary services, digital capabilities and long-term planning should not exist as separate conversations – they should form part of a single advice framework that helps clients make consistently better decisions as their financial lives evolve.

For us at FNB Private Banking and Advisory, this approach is at the heart of sustainable finance.

It is embedded into our broader advice relationship rather than confined to investment portfolios.

Whether our private advisors are supporting clients with responsible investment principles, practical energy solutions, digital tools that provide greater visibility into environmental impacts, or long-term wealth planning that considers future generations, the objective is always to leverage sustainable thinking to enable better financial decisions across the full spectrum of a client’s wealth, life and legacy.

Our recognition as South Africa’s Best for Sustainability in the Euromoney Global Private Banking Awards reflects this belief.

We see sustainability not as a separate discipline within private banking, but as an increasingly important lens through which our clients can effectively evaluate opportunity and deliver their own positive impact.

Ultimately, the future of sustainable finance in private banking will not be defined by how many products carry an ESG label. It will be defined by whether it helps clients build stronger, more resilient financial futures through better-informed decisions.

That’s the true value of sustainable finance – not as a category of investing, but as a catalyst for better financial behaviour.

Eric Enslin is CEO of FNB Private Banking and Advisory.

Brought to you by FNB. 

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