A growing number of retirees face a challenge previous generations rarely had to consider: their retirement may last as long as their working lives. For South Africans retiring in their sixties, a retirement spanning 35 or even 40 years is no longer an extreme scenario.

While longer life expectancy is undoubtedly positive, it fundamentally changes how investors need to think about saving, investing and drawing an income in retirement.

The question is no longer whether you can afford to retire. It is whether your wealth can continue supporting your lifestyle for decades after you stop working.

Longevity changes the investment equation

Longer life expectancy has transformed one of the biggest financial risks facing retirees: the possibility that their capital may not last as long as they do. Known as longevity risk, it is becoming one of the defining challenges of modern retirement planning.

In South Africa, inflation adds another layer of complexity. Rising prices steadily erode purchasing power, meaning that wealth which appears substantial today may buy less in future.

An investor retiring with R30 million may feel financially secure today. Yet the real question is not what R30 million can buy at retirement, but whether that capital can continue supporting income, healthcare costs and lifestyle needs over the next three or four decades.

Inflation, taxes, investment costs and ongoing withdrawals all place pressure on retirement capital over time.

For this reason, investors should focus on real returns rather than nominal returns. Returns that merely keep pace with inflation may not be sufficient once fees and withdrawals are considered.

A retirement that could last 35 years or more means portfolios often need to continue generating growth long after employment income has stopped. This reinforces an important principle: time in the market matters more than timing the market.

The growing importance of global diversification

Many South African investors remain heavily invested in domestic assets, creating a concentration risk that becomes increasingly important over longer investment horizons.

While South Africa continues to offer attractive opportunities, relying too heavily on a single market can increase vulnerability to economic, political and currency-specific risks.

A local portfolio is exposed to a single economy and currency. Global diversification can help reduce this concentration risk while providing access to industries and growth opportunities that may be underrepresented locally.

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