Every investor knows the feeling. You have money to invest, but the market looks expensive. Maybe there’s an election coming, or interest rates might change, or the headlines are predicting a correction. So you wait. And wait. And wait. Meanwhile, the market quietly climbs 15% while you sit in cash, waiting for the “perfect” entry point that never arrives. This is the market timing trap, and it destroys more wealth than any market crash ever has.

Disclaimer: I am not a financial advisor. This information is for educational purposes only and should not be considered as financial advice. Always do your own research and consider seeking advice from a qualified financial professional before making any investment decisions.

There is a better way, and it is boringly simple: invest the same amount at regular intervals, regardless of what the market is doing. This is called dollar-cost averaging (DCA), and it is one of the most powerful tools available to South African investors who want to build wealth without becoming a full-time market analyst.

Why Timing the Market Is a Losing Game

Market timing sounds reasonable in theory. Buy low, sell high — surely that means waiting for prices to drop before buying? The problem is that nobody, not even professional fund managers, can consistently predict when markets will rise or fall. The evidence is overwhelming and unambiguous.

A landmark study by DALBAR found that over a 20-year period, the average equity fund investor earned roughly half the return of the index itself. Why? Because investors consistently bought after markets had already risen (chasing performance) and sold after markets had fallen (panic selling). They were trying to time the market, and it cost them dearly.

The Best Days Happen When You Least Expect Them

Here is the most compelling argument against market timing: if you missed just the 10 best trading days in the S&P 500 over the past 20 years, your total return would be cut nearly in half. And here is the kicker — the best days almost always happen during or immediately after market crashes, exactly when market timers are sitting on the sidelines in cash.

Consider the COVID-19 crash of March 2020. The JSE All Share Index fell roughly 20% in a matter of weeks. Investors who panicked and moved to cash missed the fastest recovery in market history — the index regained its pre-crash levels within months. Those who stayed invested, or better yet, continued their regular monthly contributions, bought at deeply discounted prices and captured the full recovery.

The Cost of Waiting

Let’s put some numbers on it. Suppose you had R10,000 to invest in the JSE Top 40 at the start of 2023, but you decided to wait because “the market looks volatile.” Over the course of that year, the index delivered double-digit returns. Your R10,000 sat in a savings account earning 7% while the market grew significantly more. You didn’t lose money — but you lost opportunity, and over a 20-year investment horizon, that opportunity cost compounds dramatically.

What Is Dollar-Cost Averaging?

Dollar-cost averaging means investing a fixed amount of money at regular intervals — say R1,000 on the 1st of every month — regardless of whether markets are up, down, or sideways. The strategy is deceptively simple, but its mechanics are powerful.

When prices are high, your R1,000 buys fewer shares. When prices are low, that same R1,000 buys more shares. Over time, your average cost per share tends to be lower than the average market price, because you automatically buy more when prices are depressed. You never need to check the market, read analyst reports, or try to guess whether today is a “good day” to invest. You just invest, every month, automatically.

If you already have a large lump sum to deploy, the calculus is slightly different — we cover that scenario in our guide to DCA vs lump sum investing. But for the vast majority of South Africans investing from their monthly salary, DCA is not just a strategy — it is the natural and correct way to invest.

Why Dollar-Cost Averaging Works

1. It Removes Emotion from Investing

The single biggest threat to your investment returns is not market volatility — it is your own behaviour. Fear makes you sell at the bottom. Greed makes you buy at the top. DCA eliminates both impulses by making investing automatic and non-negotiable. When the market crashes, you do not face the agonising decision of whether to invest — you just invest, because that is what your debit order does. When the market is soaring, you do not feel the urge to pile in extra money chasing returns — you stick to your plan.

2. It Buys More Shares When Prices Are Low

This is the mathematical magic of DCA. Suppose you invest R1,000 per month into an ETF. In month one, the ETF costs R100 per unit — you buy 10 units. In month two, the market drops and the ETF costs R80 per unit — you buy 12.5 units. In month three, it recovers to R90 — you buy 11.1 units. Your average price across three months is R89.17, but your average cost per unit is actually lower at R88.4, because you bought more units at the lower price. This is called the harmonic mean advantage, and it works silently in your favour every single month.

3. It Forces Consistency

Wealth is not built by one brilliant investment decision. It is built by hundreds of small, consistent contributions over decades. DCA creates a system that makes consistency automatic. You do not need willpower or discipline every month — you set it up once and the system runs itself. This is why debit orders and automatic investment plans are so powerful. They turn investing from a monthly decision into a monthly habit.

4. It Protects You During Downturns

When markets fall, your instinct is to stop investing — to “wait until things stabilise.” This is precisely the wrong move. Market downturns are when DCA does its best work, buying shares at deep discounts that will look like bargains in hindsight. As we discuss in our article on benefiting from market downturns, investors who continued their monthly contributions during the 2008 financial crisis bought at 50–70% discounts and saw enormous gains during the recovery. DCA turns market crashes into opportunities, automatically.

A Real South African Example

Let’s look at how DCA would have performed with a popular South African ETF over a challenging period. Suppose you started investing R2,000 per month into the Satrix 40 ETF (STX40) in January 2018, just as global trade tensions and emerging market volatility were beginning to shake the JSE.

Over the next five years, the JSE experienced significant volatility — the COVID-19 crash, a rapid recovery, load-shedding concerns, political uncertainty, and rising interest rates. An investor trying to time the market would have faced an impossible task of deciding when to enter and exit. But the DCA investor who simply contributed R2,000 every month would have:

• Bought more units during the March 2020 crash at deeply discounted prices
• Continued accumulating units during the uncertain recovery period
• Benefited from the dividend reinvestments at lower prices during downturns
• Never had to make a single market timing decision

By the end of 2022, despite all the noise and volatility, that investor would have a meaningful portfolio built on consistency rather than prediction. The total contributed would be R120,000, and the portfolio value would include capital growth plus reinvested dividends — all achieved without a single market call.

How to Implement Dollar-Cost Averaging in South Africa

Setting up DCA is straightforward and requires only a few steps:

1. Choose your platform. EasyEquities and SatrixNOW both support automated monthly ETF purchases with no minimum lump sum. You can set up recurring investments from as little as R100 per month.
2. Decide your monthly amount. Pick an amount you can sustainably commit to — one that does not put pressure on your monthly budget. Even R500 per month compounds significantly over 20 years.
3. Choose your investments. For most investors, one or two broad-market index fund ETFs are sufficient. A simple combination like the Satrix 40 (local equity) and Satrix MSCI World (global equity) gives you excellent diversification.
4. Set up an automatic debit order. Schedule your investment for the day after payday, so the money is invested before you have a chance to spend it. Automation is the key — it removes the temptation to skip a month.
5. Use your TFSA first. If you have not used your annual R36,000 Tax-Free Savings Account allowance, route your DCA contributions through your TFSA. All growth and income will be completely tax-free.
6. Review annually, not daily. Check your portfolio once a year to rebalance if needed. Do not check it daily — that only feeds the temptation to tinker. For a structured approach, see our three-fund portfolio guide.

Common DCA Mistakes to Avoid

Pausing During Downturns

This is the most common and most damaging mistake. When markets fall, the temptation to pause contributions is strong — “I’ll resume when things look better.” But that is exactly when DCA is most effective. Pausing during downturns means you miss the discounted prices that drive long-term returns. If anything, downturns are when you should feel best about your monthly debit order, not worst.

Investing Too Little

DCA works, but it requires meaningful contributions to make a real difference to your financial future. If you can only afford R200 per month, start there — but commit to increasing your contribution annually as your income grows. Even a 10% annual increase in your monthly contribution can dramatically accelerate your wealth building over 20 years.

Overcomplicating Your Portfolio

DCA works best with simple, broad-market investments. If you are trying to dollar-cost average into 12 different ETFs across 5 platforms, you are adding complexity without adding returns. Pick one or two quality ETFs, set up your debit order, and let the system run. Simplicity is not a weakness — it is the entire point.

Stopping When Markets Rise

Some investors start DCA during downturns (good instinct) but then stop when markets recover, thinking they have “missed the gains.” This is backwards. Markets rise more often than they fall, and the bulk of long-term returns come from being invested during those rising periods. DCA is a lifelong strategy, not a crash-protection tool.

DCA vs Market Timing: The Verdict

If you are still tempted to time the market, consider this: to beat DCA through market timing, you need to be right twice. You need to correctly identify the top (when to sell) and correctly identify the bottom (when to buy back). Getting either call wrong erodes your returns. Getting both wrong is catastrophic. Professional fund managers with teams of analysts, Bloomberg terminals, and decades of experience cannot do this reliably. What makes you think you can?

DCA does not require you to be right about anything. It does not require predictions, forecasts, or market analysis. It simply requires you to invest consistently and let time do the heavy lifting. That is the boring investor’s way — and it works.

Conclusion

Market timing is seductive because it promises control — the idea that you can outsmart millions of other investors by waiting for the “right” moment. But the data is unambiguous: market timing consistently underperforms simple, consistent investing. The best days in the market are unpredictable, and missing them is far more damaging than buying at the “wrong” time.

Dollar-cost averaging works because it acknowledges a fundamental truth: you cannot predict the market, but you do not need to. By investing the same amount at regular intervals, you automatically buy more when prices are low, remove emotion from your decisions, and build wealth through consistency rather than prediction. It is the ultimate boring strategy — and that is exactly why it works.

Your action step: If you do not already have an automatic monthly investment set up, do it today. Choose an amount, pick a broad-market ETF, set up a debit order for the day after payday, and then stop thinking about it. Your future self will not remember the market conditions on the day you started — they will only be grateful that you started.