What is pound-cost averaging?
What you'll learn
Understand pound-cost averaging - investing little and often - and why it helps beginners.
Pound-cost averaging means investing a fixed amount on a regular schedule, such as £100 every month, regardless of the price on the day. You buy more units when prices are low and fewer when they are high, so your average cost smooths out over time.
It is the natural way to invest if you are paid monthly: a slice of each pay packet goes straight in.
How it works
| Month | You invest | Price per unit | Units bought |
|---|---|---|---|
| 1 | £100 | £10.00 | 10.0 |
| 2 | £100 | £8.00 | 12.5 |
| 3 | £100 | £12.50 | 8.0 |
Same money each month, different number of units. The dips quietly work in your favour because the same £100 scoops up more.
Why it suits beginners
- No market timing. You never have to guess the bottom.
- A habit, not a decision. Set up a direct debit and it happens on autopilot.
- Calmer ride. Falls feel less alarming when they mean cheaper units.
One honest caveat: investing a lump sum early has often grown more over the long run, simply because the money spends longer in the market. Pound-cost averaging trades a little of that for a smoother, more sustainable habit. For most people investing from a salary, regular investing is the realistic choice anyway.
Key takeaways
- Pound-cost averaging is investing a fixed amount on a regular schedule.
- A fixed sum buys more units when prices fall and fewer when they rise.
- It removes market timing and builds a sustainable habit.
- A lump sum may grow more over time, but regular investing suits monthly earners.
Illustrative only: a made-up example of buying with £100 each month at different prices. A lower price buys more units, a higher price fewer. Real markets vary; this is not a forecast.
Frequently asked questions
Does pound-cost averaging beat investing a lump sum?
Not always. Over long periods, investing a lump sum early has often grown more, because the money is in the market longer. But pound-cost averaging smooths the ride and suits people paid monthly.
Is this only for index funds?
No. You can drip-feed into most investments. It pairs well with broad, low-cost funds because you are not trying to time anything.
How often should I invest?
A common rhythm is monthly, lined up with payday. The key is consistency, not the exact date. Automating it removes the decision.
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.