Costs are invisible by design, and invisible costs are never resisted

This is written to be used rather than admired. Each section below is a decision about how investment charges are collected, and each one has a default.

Nothing ever leaves

Fund charges are taken from the fund assets, so the price you see is already net of them and no transaction appears anywhere. Platform charges are frequently deducted from cash inside the account or by selling units automatically. The result is a payment made every year that you never actively make, and that never competes with anything else in your budget.

Almost every other recurring cost in your life produces a notification; this one produces silence.

Forgone money is felt weakly

People react strongly to money leaving their possession and much more weakly to money that simply never arrives. A charge deducted before you see the balance is experienced as a slightly smaller number rather than as a payment. Since you never see the counterfactual balance, there is nothing to compare against and nothing to be annoyed by.

For most people, the reaction that would normally drive you to shop around is therefore never triggered.

Percentages are not money

A figure expressed as a fraction of a per cent does not activate any sense of scale, particularly against a balance you also think of abstractly. Written as an annual amount in your own currency, the same charge frequently produces an immediate reaction. That reaction is the appropriate one, and it was suppressed only by the units.

In practice, doing this conversion once a year is the single most effective cost habit available.

Layers make it worse

Costs sit at several levels: the platform or custodian, the fund itself, dealing charges and, inside the fund, transaction costs. Each is disclosed separately and in a different document, so no single figure is ever presented to you. Nobody is hiding anything, but the effect of fragmented disclosure is the same as hiding it.

Adding them into one number is work that only you can do, and almost nobody does.

Make the invisible visible

Write your total annual cost as a currency amount on the same page as your plan, where you will see it every year. Some people find it useful to compare it to a familiar recurring expense, which is exactly the comparison the deduction method prevents.

The point is not to be alarmed but to have the number in a form your judgement can operate on. A cost you can see is one you might act on; a cost you cannot see is one you will pay indefinitely.

Some of this will suit you and some will not, and that is the point.

A note on what to compare

Costs differ enormously between countries in structure, disclosure requirements and what is bundled together. Comparisons are only meaningful against providers available where you live, on the same basis and for your actual balance and contribution pattern.

On an ordinary week, where an account carries tax advantages, the comparison also has to account for that, which is jurisdiction-specific. For anything involving tax or a transfer of an existing account, a regulated adviser locally is the right check.

The takeaway

Write your annual cost in currency, not percentages. The reaction it produces is the useful part.

Small and repeatable beats ambitious and abandoned, almost every time.