Why Portfolio Turnover Matters More Than Pre-Tax Returns
Most investors are trained to focus on returns. Did the portfolio make 8% or 10%? Did it beat the market? Did the manager outperform? It sounds sensible. But it misses something important.
You do not spend pre-tax returns. You spend what is left after tax. And that is where many investment strategies fall apart. The easiest way to see the problem is to compare two investors.
The first hires a stockbroker who is “good”. On paper, they outperform the market by 2% a year. They are active, constantly buying and selling, reshuffling the portfolio to stay ahead. The result might be a 10% return. On the surface, that looks like a win.
But look closer. To generate that excess return, the portfolio is turning over aggressively. Stocks are being sold and replaced throughout the year. Gains are realised constantly. If you are on a top marginal tax rate, around 47%, almost half of those gains are lost to tax. What looked like 10% quickly becomes something closer to 5%.
Now compare that to a second investor investing in a direct index. They achieve a slightly lower return, say 9%. But their turnover is much lower, perhaps 5%. They are not trading for the sake of activity. They are holding positions and letting them run. The tax outcome is completely different.
Instead of realising gains every year, most of the return is embedded in unrealised capital growth. Tax is deferred. In some cases, offset by capital losses elsewhere in the portfolio. They might only pay tax on a modest income stream, say a 1.5% dividend yield. The headline return is lower. The after-tax outcome is over 8%.
This is the turnover problem.
It does not show up in performance charts. It is rarely highlighted in marketing material. But it has a direct impact on investor outcomes. High turnover is not just a trading style. It is a tax decision. Every time you sell an asset, you crystallise a gain or loss.
In a high turnover portfolio, you are effectively pulling forward tax liabilities. You are bringing future tax into the present. That reduces compounding. The effect is subtle, but powerful. Over time, it can be the difference between a strategy that looks good on paper and one that actually delivers for investors. This is where direct indexing offers something different.
How Direct Indexing Reduces Tax Drag Through Low Turnover
At its core, direct indexing is typically a low-turnover strategy. It is not trying to pick the next outperformer or constantly rotate exposures. The starting point is to track an index by holding its underlying stocks. That naturally reduces trading.
But more importantly, it changes the nature of the turnover that does exist. In a traditional active portfolio, turnover is often driven by conviction. A manager sells one stock to buy another, ideally at a profit.
In direct indexing, turnover is often driven by mechanics. Stocks enter and leave the index over time. Positions are rebalanced. But crucially, many of the trades occur in stocks that have fallen in price. That matters.
If a stock drops out of the index, there is a good chance it has underperformed. Selling it results in a capital loss, not a gain. Those losses are not wasted. They can be used to offset gains elsewhere in the portfolio or carried forward to reduce future tax.
In other words, the limited turnover that does occur is often working in the investor’s favour, not against them. This is a very different profile from that of high-turnover active management. Instead of constantly triggering taxable gains, the portfolio is selectively realising losses, while allowing winners to continue compounding.
Over time, that creates a tax profile that is far more efficient. The key insight is that not all turnover is equal. High turnover driven by trading tends to be tax-negative. It accelerates gains and disrupts compounding. Low, systematic turnover, particularly when it realises losses, can be tax-positive.
Direct indexing sits firmly in the second category. It is not designed to eliminate turnover entirely. That would not be practical. But it manages it in a way that aligns with after-tax outcomes. This brings the conversation back to first principles.
Maximizing After-Tax Returns: Key Takeaways for Investors
Investors should not be asking, “What is the return?” They should be asking, “What is the after-tax return, and how much risk and complexity was required to achieve it?”
For many traditional strategies, particularly those that rely on frequent trading, the answer is less attractive once tax is taken into account.
The headline performance masks a structural inefficiency. Direct indexing does not promise higher pre-tax returns. That is not the point. It offers a different way of thinking about portfolio construction. One that recognises that turnover is not just a by-product of investing, but a key driver of outcomes.
By keeping turnover low and ensuring that, when trades do occur,, they are more likely to realise losses than gains, the balance shifts back towards the investor. Over time, that can be a meaningful advantage.
Because in the end, the goal is not to win the pretax performance league tables. It is to keep more of what you earn.
Ready to put an end to high turnover and unnecessary tax liabilities? Head over to directindexing.au to explore our direct indexing solutions, or reach out to our expert team to discuss how we can tailor an after-tax investment strategy to your personal wealth goals.
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