Why fees matter

What you'll learn

Understand why investment fees matter so much over time - the silent wealth-killer.

Fees are the silent wealth-killer. They look trivial as a percentage, but you pay them every year on your whole pot, and over decades they compound into a serious dent in your final value.

The fees you pay

  • Platform or account fee - for the service that holds your investments.
  • Fund charge - the cost of the investment itself, often the biggest piece.
  • Trading costs - charged when you buy or sell, so frequent trading adds up.
Annual feeSounds likeLong-term effect
0.2%Almost nothingSmall drag
1.0%Still smallA large slice of your pot over decades
2.0%"Just" 2%Can swallow a big chunk of your gains

Why the maths bites

A fee is taken from the whole balance every year, including the growth you have already earned. So it does not just cost you the fee; it costs you all the future growth that money would have made. That is the compounding working against you.

The good news: cost is one of the few things you control. You cannot dictate the market, but you can choose cheaper options and avoid needless trading.

Key takeaways

  • Fees are charged yearly on the whole pot and compound against you.
  • A 1% fee can cost a large slice of your final value over decades.
  • The main fees are platform, fund and trading costs.
  • Cost is one of the few levers you control, so keeping it low matters.
Illustrative: the same pot after decades, low fee vs high fee
Low annual fee£57,000
High annual fee£46,000

Illustrative only: assumes identical growth before fees and shows the drag of a higher annual charge over a long period. Figures are made up to show the effect. Not a forecast.

Frequently asked questions

What kinds of fees am I paying?

Usually a platform or account fee for the service, plus a fund charge for the investment itself. There can also be trading costs when you buy or sell.

A 1% fee sounds tiny. Why does it matter?

Because you pay it every year on the whole pot, and it compounds. Over decades, a 1% drag can cost a large slice of your final value.

Can I control fees?

Partly. You cannot control the market, but you can choose lower-cost options and avoid unnecessary trading. Cost is one of the few levers in your hands.

General information, not financial advice. The value of investments can fall as well as rise, and figures and rules can change; check the current position before acting.