Comparing investment strategies fairly

Headline returns are not what you think

A fund advertising “8% annual return” and a fund advertising “6% annual return” sound like a clear winner — until you account for fees, dividends, and how each strategy actually delivers return. Two strategies with the same headline number can produce dramatically different real-world outcomes.

The discipline of comparing investment strategies is to strip away the marketing and put each one on the same set of inputs: the same starting balance, the same horizon, the same currency, and your own assumptions about return, fees, and dividends. Only then does the comparison mean anything.

Fees compound against you

Every dollar charged in fees is a dollar that doesn’t compound. Over a 20-year horizon, a 0.5% annual fee on a $100,000 balance is far more than $20,000 — because each year’s fee removes capital that would have grown for the rest of the horizon.

A useful rule of thumb: fee drag roughly halves the impact of compounding when fees are 1% or higher and the horizon is 20+ years. A “low-fee index fund at 0.1%” and an “actively managed fund at 1.5%” with identical pre-fee returns do not finish anywhere near each other.

This is why a serious comparison shows fees as a separate column in the result table — not just a footnote. Two strategies with similar gross returns can produce a 20–30% difference in final balance over a long horizon, purely because of the fee gap.

Dividends matter — but only if reinvested

A “5% growth fund with 1% dividend yield” and a “4% growth fund with 2% dividend yield” have the same total return on paper. But what happens to the dividend changes everything:

• Reinvested dividends add to the balance and compound from that point forward. They behave exactly like growth.
• Cash dividends sit outside the balance, earning whatever you do with them — typically a savings account rate that’s much lower than the fund return.

Over decades, the gap between a dividend-reinvesting fund and an identical fund paying cash dividends can be enormous. The same headline numbers, very different end states.

What to fix and what to vary

When comparing strategies, hold these inputs constant across every scenario:

• Starting balance — the same starting amount for each strategy.
• Horizon — the same number of years for each strategy.
• Currency and tax treatment — model in one currency, with the same tax assumptions (or with all taxes excluded).

Then vary only what actually differs between the strategies:

• Annual return assumption.
• Annual fees.
• Monthly contributions, if any.
• Dividend yield and reinvestment switch.

The point of fixing the first three and varying the last four is that you end up with an apples-to-apples comparison. The “winner” is the strategy that produces the highest net outcome under your own assumptions — not someone else’s.

What headline rate actually means

The 7% or 8% you see quoted on a fund factsheet is usually the gross return — before fees, sometimes before dividends, often before tax. The number that ends up in your pocket is much smaller.

When comparing strategies, work with assumptions you control:

• A realistic net return (after fees) — for diversified equity index funds, 5–7% real (after inflation) is the long-run average. Anything above 10% is speculative.
• An honest fee figure — read the management expense ratio (MER), not just the headline fee.
• A separate dividend yield — most index funds pay 1–3%, dividend-focused funds pay 3–5%.

Plug these into the comparison and the answer often surprises people. A “boring” low-fee index fund frequently beats a “high-return” active fund once fees and dividend reinvestment are properly accounted for.

When the comparison gets close

If two strategies finish within a few percent of each other after 20+ years, the realistic answer is that the difference is noise. Investment returns are not deterministic — both strategies have a wide distribution of possible outcomes, and the gap between them is dwarfed by the gap between their best and worst likely paths.

In that case, prefer the strategy with the lower fees and simpler structure. Lower fees are a guaranteed advantage; simpler structures are easier to maintain over decades.

Next steps

Use our investment scenario comparison calculator to compare two or three strategies side by side using your own assumptions. To explore the long-term cost of fees alone, try the fee drag calculator. To see how reinvestment alone changes outcomes, the dividend reinvestment calculator isolates that variable.