By Werner Gerber, CFA® | Founder, ClearGauge Wealth
ClearGauge Wealth (Pty) Ltd is an Authorised Financial Services Provider (FSP No. 55826).
Last fact-checked: 8 August 2026
Table of Contents
Quick Answer
In brief
There is no single retirement number for every South African. Start with the income your investments must provide after tax and other reliable income. Then test that gap against costs, inflation, market risk and how long income may be needed. A formula gives a starting range. It cannot promise that a plan will last.
Visual Summary
| Start with | Why it matters |
| After-tax spending | It shows the income your household needs each month. |
| Reliable income | It can reduce the gap your investments must fill. |
| Time in retirement | A longer period gives inflation and poor markets more time to matter. |
| Spending flexibility | It shows which costs can change if conditions become harder. |
This framework is general education. It is not a retirement quote, forecast or personal recommendation.
Decision Framework
1. Start With Your Income Gap
Retirement capital is money set aside to produce income after work ends. Your income gap is the amount your investments must provide each month. It begins with a full after-tax spending plan.
List essential costs first. These may include housing, food, utilities, transport, insurance and medical aid. Then list lifestyle costs, such as travel, gifts, entertainment and home upgrades.
Some costs arrive only once or twice a year. Rates, levies, car repairs and family support can be missed. Add them before you set a target.
- Start with today’s rand amounts. Add inflation later.
- List your must-have costs and your nice-to-have costs separately.
- Only subtract income you can count on.
- Check the tax first. Only what is left is spendable cash.
2. Turn the Gap Into a Capital Range
A withdrawal rate is the percentage of retirement capital you draw each year. It links an annual income need to a capital estimate — it does not tell you which rate is suitable for you.
Illustrative formula
Retirement capital estimate = annual income needed from investments ÷ assumed initial withdrawal rate. This formula shows a relationship, not a forecast. It does not predict investment returns or recommend a drawdown rate.
A simple example
Take a hypothetical 4% starting rate. An annual income need of R360,000 divided by 4% gives a target of R9 million. Divide the same income need by 3.5% instead, and the target rises to about R10.29 million.
The lower rate produces the larger target. That’s the point of the example: a small change in the assumed rate can shift the required capital meaningfully over a long retirement.
Illustrative figures only. They are before tax and exclude returns, fees, inflation and changes in spending.
3. Stress-Test the Range
A capital range becomes useful only when you test it. Ask what happens if costs rise faster than expected. Ask what happens if markets fall early in retirement.
Sequence risk means poor investment returns arrive early while you are taking income. Those withdrawals can leave less money to grow back later. This can weaken an income plan even when long-term average returns look reasonable.
Fees also matter. Each fee reduces the money left in the portfolio. Tax matters too. The South African Revenue Service, known as SARS, taxes income according to current rules and your total taxable income.
A strong plan also considers health and lifespan. You may need income for longer than expected. Medical and care costs can also rise at a different pace from other costs.
- What if markets fall in the first five years?
- Which costs could be reduced for a time?
- What tax will apply to each income source?
- How will medical costs change as you age?
Worked Example
Consider a couple who need R52,000 each month after tax. They expect R18,000 from dependable income. Their investments must therefore fund an illustrative R34,000 each month.
That is R408,000 a year before tax. At a hypothetical 4% rate, the simple formula gives R10.2 million. At 3.5%, it gives about R11.66 million.
These figures are not a recommendation. The couple still needs to test tax, fees, inflation, investment mix and the chance of weak early markets. They also need to decide whether some lifestyle spending can change.
The useful result is not one magic number. It is a clear income gap and a list of assumptions that need review. That gives the couple a better starting point for a planning conversation.
Reality Check
A paid-off home can lower monthly housing costs. That may reduce the income your investments need to provide. It is not automatically income capital.
You can only count home value if there is a real plan to use it. That may mean downsizing, selling, renting part of the property or another lawful option. Costs, timing, tax, family needs and future housing still matter.
The same applies to other assets. A value on paper is not always cash you can use. Check access, tax and practical limits before relying on it.
Turning a Capital Target Into a Savings Plan
A retirement target can also guide your savings plan. The earlier you start, the more time your contributions have to grow. The longer you wait, the more each monthly contribution needs to do.
A real return is investment growth after inflation. For a savings example, you can also allow for fees. A real return is an assumption for planning. It is not a promise of future investment performance.
Illustrative savings example
Assume a R9 million target in today’s money, R500,000 already saved and 25 years until retirement. If you use a hypothetical 4% real return after costs, the starting saving amount is about R184,000 a year. That is about R15,300 a month in today’s money. The example assumes contributions rise with inflation.
This example is a guide to the relationship between time, saving and a target. It does not predict a return. It also does not include tax, product charges, gaps in saving or changes in your retirement date.
The most useful action is often simple. Start with a sustainable amount. Increase it when income rises. Then review it after large life changes. A small increase made early can matter more than chasing a higher return later.
Review Your Plan Each Year
A retirement plan is not a once-off calculation. Your income, family needs, health and housing may change. Tax rules and product terms can also change.
Review your spending plan at least once a year. Compare it with actual spending. Check whether your savings amount still matches your retirement date and the income gap you expect.
Review after a major event too. This could be a job change, divorce, illness, death, property sale or large gift. Do not wait for the perfect time to update a plan that no longer fits.
The aim is not to predict every outcome. It is to spot a gap early enough to adjust. A current plan is usually more useful than an old plan built on forgotten assumptions.
When a General Guide Is Not Enough
A general guide can show the right questions. It cannot settle a major retirement decision. This is especially true when your income will depend on one portfolio or one annuity choice.
You may need a personal calculation if you have debt, dependants, complex tax, a business, rental income or several retirement products. Health costs and a spouse’s income can also change the result.
At that point, use actual statements, quotations and product terms. Check the figures against your own budget. A personal decision needs facts that a general article cannot know.
Common Mistakes
Using Today’s Salary as the Target
Your salary is not the same as retirement spending. Work costs may fall. Medical, home and care costs may rise. Build a retirement budget instead.
Ignoring Tax and Fees
A gross income figure can look sufficient but still fall short. Your household spends after tax. Costs also reduce the capital that supports future income.
Treating a Formula as a Promise
A formula is a useful guide. It cannot know your health, family needs or future markets. Use it to ask better questions, not to make a final decision.
Counting Every Asset as Available Cash
A home, business or property may have value. It may also be hard to sell, costly to use or needed for another purpose. Test the plan before you count it.
What This Framework Does Not Decide
This framework cannot set a personal retirement-income, investment or tax outcome. Your health, family, other income, costs, time horizon and product terms can change the answer.
Use it to prepare for a proper review. Obtain advice that is appropriate to your objectives, financial situation and needs before making a material decision.
Frequently Asked Questions
Is R5 million enough to retire in South Africa?
It may be enough for some households. It may not be enough for others. The key issue is the after-tax income it can support after costs, inflation, market risk and other income are considered.
Is the 4% rule a guarantee?
No. It is a common illustration of the link between capital and income. It cannot promise a portfolio will support the same income through retirement.
Should I include my home in my retirement capital?
A home can lower housing costs. It should only be counted as funding capital when you have a clear and workable plan to use its value.
Should I plan before or after tax?
Plan around after-tax spending. Then check the current tax treatment of each income source using SARS information and the details of your own situation.
Financial Clarity Review
A practical next step
Gather your budget and investment statements. Add details of any other income, your tax information, and your product terms. A Financial Clarity Review can bring those parts into one planning conversation. It does not replace a personalised suitability assessment.
Continue Exploring
Explore the ClearGauge Wealth Retirement Planning library for the connected questions that shape a retirement plan.
- What Is a Safe Withdrawal Rate for South African Retirees?
- How Does Sequence Risk Affect Retirement Income?
- How Does Inflation Erode Retirement Savings Over Time?
- What Is the Difference Between a Living Annuity and a Guaranteed Annuity?
- Should You Choose a Living and Guaranteed Annuity Combination?
- How Does Regulation 28 Affect Retirement Savings?
Sources and Further Reading
Primary sources were checked on 2 August 2026. Recheck tax rules, retirement-product terms and regulatory information immediately before publication.
- ASISA: Standard on Living Annuities (last updated 30 October 2024)
- SARS: Personal Income Tax
- SARS: Income Tax rates and current tax-year information
Important Disclosure
General information only
This article is provided for general educational and informational purposes only and does not constitute financial, investment, tax or legal advice. The examples, calculations and illustrations are based on assumptions that may not apply to your individual circumstances and should not be regarded as guarantees of future outcomes. Before making financial decisions, you should consider obtaining advice that is appropriate to your objectives, financial situation and needs.