The percentage that eats a third of your outcome

What follows is an argument about investment charges, and about where the received version of it stops being true.

The cost is on the balance, not the return

An annual charge of one per cent takes one per cent of everything you hold, every year, whether the market rose or fell. Over a multi-decade horizon that removes a substantial fraction of the final value. Because it is deducted regardless of performance, it is the only part of the equation with a guaranteed direction.

Count every layer

Platform or custody fees, the fund ongoing charge, transaction costs inside the fund and any dealing charges all apply. The headline fund figure is often the smallest of them for a modest portfolio. Adding them into a single total cost of ownership figure is the only honest comparison.

Platform pricing has a crossover

Percentage-based platforms are cheaper for small balances and expensive for large ones; flat-fee platforms are the reverse. There is a portfolio size at which switching saves meaningful money every year thereafter.

Recalculating this every few years is a short task with a long payoff.

Cost predicts relative performance

Repeated analyses across decades have found lower-cost funds outperforming higher-cost peers in the same category more often than not. Past returns, by contrast, have weak predictive power. This is not an argument that active management never works; it is that the fee is certain and the skill is not.

Adjust the size of it until it is something you would actually do tired.

Reducing cost is administrative

Switching to a cheaper equivalent fund or platform is a form-filling exercise rather than a strategic decision. Check exit fees and, in a taxable account, any tax consequence of selling before switching. It is one of very few investing decisions whose outcome is knowable in advance.

The takeaway

Work out your total annual cost as one number. Most people have never seen it.

The version you keep doing is the version that works.