“How much do I need to retire?” is one of the most common questions people ask … and also one of the most misleading.
It sounds like a simple numbers exercise, but in reality, retirement success has far less to do with reaching a single capital figure and far more to do with income needs, investment returns, longevity, taxation, and flexibility over time.
Two people can retire with exactly the same amount of capital and experience very different outcomes.
This guide doesn’t try to give you the number. Instead, it provides a clear framework to help you understand what your retirement capital actually needs to support — and why focusing on the number alone often leads people astray.
In short: Most retirees need far more capital than expected because retirement success depends on income, longevity, drawdowns, returns, and tax — not a single number.
There is no single number that works for everyone. How much you need to retire depends on five key factors:
Your required monthly income after tax
How long your retirement is likely to last
The drawdown rate you use
Your long-term investment return
How tax-efficient and diversified your capital is
As a broad guide, retirees aiming for a sustainable 4% drawdown typically need capital in the range of 20–25 times their annual after-tax income — but this varies meaningfully based on personal circumstances.
Retirement doesn’t cost “R5 million” or “R10 million”.
It costs a monthly income, sustained over many years.
A far better starting question is:
“How much income do I realistically need, after tax, to maintain my desired lifestyle in retirement?”
That might be:
Only once this income target is clear does capital begin to matter. Capital is the engine — income is the destination.
A common rule of thumb suggests that retirees need about 75% of their final working income to retire comfortably.
This can be a useful starting point, but it often breaks down in practice:
A more reliable approach is to:
This produces a far more accurate income target than any single percentage ever could.
Once income is defined, the next critical driver is the return your capital can realistically generate over time.
This is where many retirement plans quietly fail.
Over long periods:
Small differences in return assumptions can translate into millions of rands over a 25–30 year retirement.
This has very little to do with chasing performance — and everything to do with asset allocation, diversification, discipline, and behaviour.
Retirement today often lasts much longer than people expect.
If you retire in your early- to mid-60s:
Longevity risk is not dramatic or sudden — it’s slow, compounding, and unforgiving. This is why sustainable drawdowns and flexibility matter far more than precision forecasts.
How much you withdraw from your capital each year is one of the most important decisions in retirement planning.
As a broad guide:
A retirement plan that looks affordable on day one can become fragile surprisingly quickly if withdrawals are too aggressive early on.
Further Reading: Understanding living annuities and their benefits, risks and how they work.
With interest rates having peaked and now beginning to trend lower, the retirement landscape is shifting again.
There is no universally “better” solution — only what fits your objectives, household structure, and tolerance for uncertainty.
More South Africans are now thinking about retirement in global terms, not purely in rands.
This matters because:
For many retirees, offshore exposure is no longer a nice-to-have diversification tool — it is a core planning input.
Ignoring this can materially distort the capital required to sustain a desired lifestyle.
Once income needs, drawdown rates, and tax are understood, it helps to translate this into a rough sense check … not a target, and not a promise.
The table below is purely illustrative, designed to give context rather than certainty.
| Target net income (per month) | Approx. gross income (per month) | Assumed sustainable drawdown | Indicative capital required |
|---|---|---|---|
| R50,000 | ± R70,000 | 4.0% | ± R21 million |
| R100,000 | ± R150,000 | 4.0% | ± R45 million |
Small changes in drawdown rate, tax efficiency, offshore exposure, or guaranteed income can materially shift these numbers — sometimes by millions of rands.
These figures are therefore best viewed as orientation points, not planning conclusions.
| Assumption change | Impact on retirement outcome |
|---|---|
| Drawdown increases from 4% → 5% | Materially higher risk of capital depletion |
| Returns fall by 1% p.a. | Retirement sustainability shortens by many years |
| One spouse lives 5–10 years longer | Income pressure increases late in life |
| Higher offshore exposure | Greater long-term growth potential, lower local risk |
| Guaranteed income included | Lower required drawdown on invested capital |
At this stage, the answer to “how much do I need to retire?” should be clearer:
It depends — but not in a vague or unhelpful way.
It depends on:
Two people with identical capital can experience very different retirements.
The goal is not to chase a number. The goal is to build a plan that remains resilient across many plausible futures.
If you are within 10 years of retirement — or already retired — the most valuable exercise is rarely guessing the “right” number.
It is stress-testing your assumptions.
A robust retirement plan should be able to answer:
If you’re unsure whether your current plan would hold up under those scenarios, that is usually the right time to seek an independent second opinion.
The key takeaway isn’t that you need exactly R21 million or R45 million. It’s that:
The question “how much do I need to retire?” is understandable … but on its own, it’s rarely the right question.
What ultimately determines retirement success is not whether you reach a particular capital figure, but whether your plan can withstand uncertainty: lower returns, higher inflation, longer lifespans, and changing spending patterns over time.
A resilient retirement plan:
If your current plan depends on one or two optimistic assumptions being exactly right, it may look fine on paper … but feel increasingly fragile in reality.
The goal isn’t perfection. It’s confidence that your plan still works when things don’t go exactly as expected.
Further reading: Comprehensive retirement planning is a key pillar of your financial plan so make sure yours is up to date
If you’re within 10 years of retirement — or already retired — and would value an independent, objective review of your retirement plan, we can help.
Our work is typically most valuable for individuals and families with slightly more complex financial circumstances, often involving investable assets of R15 million or more, multiple income sources, offshore exposure, or important legacy considerations.
What we focus on:
We work with a limited number of clients and operate on a transparent flat-fee basis, ensuring advice is aligned with your long-term interests rather than product sales.
If that approach resonates, you’re welcome to get in touch.
Carl-Peter Lehmann is a Certified Financial Planner (CFP®) and Director at Henceforward, an independent wealth management and financial planning firm based in South Africa. With over 20 years’ experience advising high-net-worth individuals and retirees, Carl-Peter specialises in retirement income planning, offshore investing, and building resilient, tax-efficient portfolios designed to withstand uncertainty over long time horizons.
He works on a transparent flat-fee basis and focuses on evidence-based decision-making, realistic return assumptions, and sustainable income strategies rather than product-driven solutions. When not working with clients, Carl-Peter enjoys trail running and life in the village of McGregor.
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