Why it matters

The active-passive decision is not a contest between people who think and people who do not. Both approaches rely on rules, judgement, and trade-offs.

The core arithmetic is that the market return is shared by all participants before costs. After costs, a higher-cost strategy has a larger hurdle to overcome.

How it works

Active managers select securities, adjust weights, or change exposures in an effort to beat a benchmark or control risk. Passive funds follow a stated index and accept its composition.

A fair comparison uses an appropriate benchmark, the same risk level, and returns after all fees. One strong period is not enough to establish repeatable skill.

The essentials

  • Active results should be compared after fees and against the right benchmark.
  • Passive funds still make choices through index design.
  • Taxes and trading can widen the cost difference.
  • Consistency and portfolio fit matter more than labels.

Compare returns after the cost hurdle

Two fictional funds cover the same market and take comparable risk. The index earns 6% before costs; an active fund earns 7.2% before costs.

Gross performance is only the start
The passive fund earns 6% before a 0.2% cost, leaving about 5.8%. The active fund earns 7.2% before a 1.5% cost, leaving about 5.7%.
Read the image as text
Passive example
5.8% net6.0% gross − 0.2% cost.
Active example
5.7% net7.2% gross − 1.5% cost.

Example assumptions: Fictional returns and costs, same market and comparable risk, percentage-point fee subtraction, no tax, trading costs, or deposits. Actual fund returns and fee accrual differ.

  1. Subtract the passive fund's cost

    At an assumed 0.2% annual cost, the passive result is approximately 6% − 0.2% = 5.8%.

  2. Subtract the active fund's cost

    At an assumed 1.5% annual cost, the active result is approximately 7.2% − 1.5% = 5.7%.

  3. Find the hurdle

    The active fund would need about 7.3% before costs to match the passive fund's 5.8% net result in this simplified comparison, and more to beat it.

What this shows

A higher gross return can still leave the investor with less. This one-year example explains the arithmetic; it does not establish which manager will perform better.

Your next-step checklist

  1. Identify the benchmark in the fund documents.
  2. Compare long periods and multiple market conditions.
  3. Measure total cost and tax impact.
  4. Write down what would justify keeping or replacing the strategy.
Before you act

Past outperformance can disappear, while switching after weak performance can lock investors into chasing whichever style just won.

Explore further, if useful

The essentials are above. Open a topic below when it helps answer your next question.

Another example: What the 2025 SPIVA Canada scorecard found
Current Canadian evidence

S&P Dow Jones Indices reported that 93.4% of Canadian Equity funds underperformed the S&P/TSX Composite Index in 2025. The underperformance rate was 98.8% over the ten-year horizon ending in 2025.

The report also said 47.1% of Canadian Equity funds merged or liquidated over ten years. This does not prove every active decision is wrong. It shows how high the hurdle becomes after costs, selection, and survivorship are included.

2025 underperformed
93.4%
10-year underperformed
98.8%
10-year merged / closed
47.1%
Survivorship and benchmark choice matter

A fund comparison can look better when failed or merged products disappear from the data. A rigorous scorecard keeps track of those funds and compares each category with a relevant benchmark. It also looks beyond one year, because style cycles can make temporary outperformance look like permanent skill.

Passive funds do not win every period, and an active manager may provide downside control or a specialized mandate. The evidence question is whether the benefit persists after fees and whether the investor can identify it before, rather than after, the result.

Manager risk is separate from market risk. A manager can leave, the process can change, assets can grow too large for the original strategy, or a concentrated view can remain wrong for years. Active investors need a monitoring rule for those changes as well as patience during ordinary underperformance.

Index investors face governance choices too. An index provider decides which securities qualify and how weights change. The practical advantage is that those rules are usually published in advance, making the exposure and performance benchmark easier to audit.

Some investors combine the approaches by using broad index funds as a low-cost core and a limited active allocation for a clearly defined purpose. That structure only helps when the active sleeve has a size limit, a fair benchmark, and a reason stronger than recent performance.

The benchmark must fit the mandate

Active performance can look impressive when the benchmark is easier, safer, or simply different. A small-company manager compared with a large-company index may appear skilful during a small-cap rally without adding value relative to the market actually owned. Compare holdings, factor exposures, cash, and risk before attributing the gap to security selection.

Taxes and capacity can change the real result. Frequent trading can realize gains in taxable accounts, while a strategy that worked with a small asset base may struggle after attracting billions because its best opportunities cannot absorb the new money. A due-diligence process should examine people, philosophy, portfolio construction, fees, turnover, and whether success itself could weaken the approach.

Situation What matters Practical move
A broad developed-market allocation
Markets are liquid and low-cost index options are readily available.
Require strong evidence before accepting higher cost and manager risk.
A specialized active mandate
The manager claims an edge in research, access, or risk control.
Define the relevant benchmark and evidence before investing.
An active fund after a weak period
Performance may reflect style, bad luck, broken process, or excess cost.
Review mandate and holdings instead of selling solely from the ranking.
Put the idea into a wider plan

Define the comparison before looking at performance. The active fund and benchmark should cover similar assets, geography, company size, and risk. Use returns after all recurring costs and examine several market environments. A manager who owns smaller companies should not be judged against a large-company index, and a strong single year cannot establish repeatable skill.

Write down why active management is being used. Possible reasons include a specific risk-control mandate, access to a less efficient market, tax management, or a service relationship that supports the wider plan. Then identify the evidence and review date. A broad low-cost passive portfolio is a strong default because cost and exposure are knowable; active management carries the added burden of proving that its role justifies higher cost and monitoring.

Can an active manager beat an index?

Yes, some do over particular periods. The challenge is identifying them in advance, after fees, and distinguishing skill from luck. Persistence is difficult, which is why a process should not rely on choosing next decade's winner from last decade's rankings.

Does passive investing guarantee average returns?

An index fund aims to track its benchmark before costs, not guarantee a gain. The benchmark itself can fall, and the fund will usually trail it slightly after expenses. Average refers to market exposure, not a smooth or risk-free result.

Can I combine active and passive funds?

Yes. A core broad-market allocation can sit beside a smaller active position with a clearly defined purpose and limit. Measure the combined fees, overlap, and risk so the satellite holding does not quietly replace the diversified core.

Sources and further reading