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The Retirement Income Gap: South Africa's Most Underestimated Risk
The Retirement Income Gap is the difference between when your money runs out and how long you need it. Here is how to measure yours and what to do if the math doesn't add up.
AS Brokers Insight · The Retirement Income Problem
How long will your retirement money last in South Africa?
If you have already retired — or you are within five years of it — the most useful number you can know is not how much you have. It is how long what you have will last. The gap between those two numbers has a name: the Retirement Income Gap. This article explains how to measure yours, and what to do if the numbers don't hold up.
What is the Retirement Income Gap?
The Retirement Income Gap is the difference between the age at which your capital is projected to run out and the age you need to plan to. If your numbers say the money lasts to 78 and your planning age is 90, your gap is twelve years. Twelve years of income you have not yet figured out how to produce.
Most South African retirees who planned for the lump sum but never modelled the income hit a wall somewhere around age 75. The capital is still there. The purchasing power is not. We routinely see clients lose a third of their effective income to inflation and tax drag — 30% erosion they never saw coming because nobody put the numbers on a single page and showed them.
The honest counter-intuition
Why "safe" can quietly become the riskiest place to be
If your money market account or fixed deposit pays 8% and South African inflation runs at around 6%, your real return before tax is 2%. After marginal tax on interest income, that figure can fall close to zero — or below it. That is not safety. That is a slow, invisible leak.
Volatility feels frightening. Erosion does not — until the day it does. The job of a retirement income strategy is to manage both risks simultaneously, not to outsource one to the other.
To understand exactly how inflation erodes purchasing power over time, read our full breakdown: Why Inflation Is the Biggest Threat to Your Retirement Income.
"Running out of money is not a moral failure. It is a signal to pivot — and the earlier the signal, the more options you still have."
The four risks that quietly drain a retirement
Most retirement planning discussions focus on accumulation — how much you save before retirement. Very few address what happens after. The Retirement Income Problem is not one risk. It is four, working together.
Risk 1
Longevity risk
You live longer than your money was designed to last. With a planning age of 90 now considered standard in South Africa, a 65-year-old needs a plan that holds for 25 years or more.
Risk 2
Inflation risk
At 6% inflation, the purchasing power of R10 000 a month today becomes roughly R5 584 in ten years. The income does not shrink. What it buys does. This is the silent tax that most retirees underestimate.
Risk 3
Sequence-of-returns risk
A significant market decline in the early years of retirement — while you are drawing income — can permanently damage a portfolio that might otherwise have recovered. The order of returns matters as much as the average.
Risk 4
Tax drag
Interest income is taxed at your marginal rate — up to 45% for higher earners. Dividends carry a 20% withholding tax. The structure of your income determines how much of it actually reaches your bank account each month.
Find your Retirement Income Gap in about ten minutes
The AS Brokers Retirement Income Calculator is built around three variables that matter most in a South African context. Inflation defaults to 6% — adjust it to your own view. Tax treatment matters because interest income taxed at your marginal rate behaves very differently to dividend income. Planning age is typically 90, in line with current South African longevity benchmarks.
The output is not a forecast. It is a stress test. It returns a single number — the projected age at which your capital runs out under your assumptions. That number is usually the one that changes the entire conversation. Use the calculator below to run your own scenario.
The Pivot Plan: two levers, not one
Once you can see the gap on a page, the response splits cleanly into two workstreams. Most retirees only act on one. The strongest retirement income plans use both.
Lever 1
Secure the core
Optimise your existing capital for net-of-tax, net-of-inflation return. That may mean rebalancing toward growth assets where the time horizon supports it, restructuring across living annuity, tax-free, and discretionary portfolios so that each rand of income is taxed as efficiently as possible, and reviewing your drawdown rate against realistic longevity projections. South African living annuities allow drawdowns between 2.5% and 17.5% — the legal ceiling is not a recommendation.
Lever 2
Earn the delta
Bridge the shortfall on the income side rather than the capital side. Phased retirement, consulting, part-time advisory, or rental income can extend the runway by years — sometimes decades — without forcing aggressive drawdowns at the worst possible market moment. Keeping the body capable of contributing is itself part of the financial plan. It is one reason health and wealth planning belong in the same conversation.
Watch the walkthrough before you run your numbers
The video below walks through a realistic South African example — a 66-year-old couple, R3.2 million in a living annuity, drawing 6% annually — so that the calculator inputs feel intuitive when you reach your own scenario. Albert covers the two adjustments that move the needle most in this type of case.
Common Questions
What is a safe drawdown rate in South Africa?
A drawdown rate between 4% and 5% of capital per year, adjusted annually for inflation, is generally considered a sustainable starting point. Living annuities allow 2.5% to 17.5% — the legal range is not a recommendation. The right rate depends on your portfolio composition, age, tax position, other income sources, and how long you need the capital to last. An adviser should stress-test your specific scenario before you commit to a rate.
How long will R1 million last in retirement at 6% inflation?
At 6% annual inflation, R1 million today has the purchasing power of roughly R558 000 in ten years and around R312 000 in twenty. At a 5% drawdown rate with moderate portfolio growth, R1 million typically supports a real income for around 18 to 22 years depending on tax structure and market values. A higher drawdown rate or lower return shortens that range considerably. Use the AS Brokers Retirement Income Calculator to model your own numbers.
My capital only lasts to age 78 but I need to plan to 90. What do I do?
You have a 12-year Retirement Income Gap — and the earlier you see it, the more options you have. The pivot is rarely a single dramatic move. It is usually a combination of a small drawdown reduction, a restructure toward better after-tax returns, a modest extension of earning years, and a review of fixed expenses. Small changes compound over time. A Retirement Income Review with an AS Brokers adviser will quantify exactly which lever moves the needle most in your situation. Market values can rise or fall, and past performance is not a guarantee of future outcomes.
Is the 4% rule valid in a South African retirement context?
The original 4% rule was derived from US market data across 30-year periods. South African research suggests that starting at 4% is a reasonable reference point for a portfolio with roughly 55% in equities over a 20-year horizon — but it is a starting point, not a guarantee. It assumes annual inflation adjustments, diversified assets, disciplined behaviour, and a tax structure that does not erode the real return. South African-specific variables — including rand volatility, higher inflation, and dividend withholding tax — all affect the outcome. Speak to an AS Brokers adviser before anchoring to any rule of thumb.
Your next step
Book a Retirement Income Review
Run the calculator first — it gives you a number to bring into the conversation. Then speak to an AS Brokers adviser. We will pressure-test your assumptions, examine your tax structure, and quantify the gap — or confirm there isn't one. No hard sell. No product first. No guaranteed outcomes. Just the math, presented honestly.
Speak to an AS Brokers adviser before changing your drawdown rate, restructuring your living annuity, or moving capital between investment vehicles.
Disclosure: Albert Schuurman is an authorised independent financial adviser and may earn remuneration from products or services discussed on this website. Information presented may be sourced from product providers, brochures, fact sheets, official websites, publicly available information, and industry publications. Product features, rewards, benefits, fees, returns, programme rules, and terms may change over time. Information is believed to be accurate at the date of publication but should be verified directly with the relevant product provider, insurer, investment manager, administrator, or service provider before any decision is made.
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Note: Market values can rise or fall, and past performance is not a guarantee of future outcomes.