ETF TER summarises recurring operating expenses as an annual percentage of assets. It is useful, but it is not the investor’s full cost and cannot precisely predict future deviation from the index.
Know what the ratio measures
TER expresses a category of fund expenses relative to assets. It helps compare similar products but is not everything an investor can pay. Documents may distinguish ongoing charges and other items. Read the stated definition instead of assuming every cost label covers the same components.
An example in euros
For a hypothetical constant investment of 10,000 euros, 0.20% corresponds to about 20 euros over a year. Actual assets fluctuate and expenses are accounted for within the fund. The illustration does not mean a separate annual invoice of exactly 20 euros arrives in your account.
Further reading: how stock indices work.
Trading expenses are separate
Broker commission and the gap between buying and selling prices are separate considerations. An immediate purchase and sale can lose money through the spread even if the market is unchanged. Currency conversion and account charges can also matter without appearing in the ETF’s TER.
Further reading: how the stock market works.
Do not double-count the performance gap
Tracking difference describes fund performance relative to an index and reflects several influences, including some expenses already represented in disclosed charges. Adding it to TER as two independent invoices can overstate costs. Each measure answers a different question.
Further reading: the risks and rights attached to stocks.
More than a percentage ranking
Products with similar TERs can differ in liquidity, replication, exposure and scale. For a small order, a fixed dealing fee can outweigh a few annual basis points. Recurring expenses matter over long horizons, but they still need to be assessed alongside the exposure being purchased.
Annual expenses are not an entry charge
Applying 0.20% to each monthly contribution as an entry commission confuses two layers. Fund expenses concern assets over time; broker charges may apply per order. Separate investment size, holding period and transaction count when making comparisons.
Put promotional numbers in context
Check which share class a reduced cost applies to and whether the arrangement is permanent or temporary. One commercial name can cover different classes. A product identifier and dated disclosure help ensure two numbers actually describe comparable investments.
Make assumptions explicit
Record exposure, recurring expenses, estimated dealing cost, currency and income policy for each candidate. If an advantage depends on frequent trading or a very long holding period, state it. The aim is to understand the conditions, not declare a universal winner.
Further considerations
- TER is deducted within fund assets and appears gradually in NAV rather than as a separate invoice.
- Bid-ask spreads and brokerage charges depend on the market and intermediary and are not captured by TER.
- Portfolio trading, taxes, securities-lending revenue and optimisation can make tracking difference diverge from TER.
- For small recurring purchases, a flat commission can matter more than a few basis points of TER.
- A TER-only comparison ignores replication quality, liquidity, scale and operational robustness.
This is general educational material, not personalised financial advice. Goals, taxes, time horizon and capacity for loss differ from one investor to another.
Related guides
- ETFs explained: how they work, costs and risks
- Accumulating and distributing ETFs
- ETF TER and costs it misses
- Physical and synthetic replication
- Tracking difference and tracking error
- Portfolio diversification
- Dollar-cost averaging
