Most people saving for retirement focus on one number: how much they’re putting in. But there’s another number — one most people have never seriously looked at — that can be just as powerful over time.

The rate of return on their investments.

Put away £400 a month for 30 years. That’s £144,000 of your own money going in.

At a 2% annual return, you’d retire with around £197,000. At 4%, that grows to £278,000. At 6%, you’re looking at over £400,000 — more than double the 2% outcome.

You didn’t save more. You didn’t work longer. The difference came entirely from where — and how — your money was working.

This is compound interest. Your money earns a return. Then that return earns a return of its own. Year on year. Decade on decade. The longer the timeframe, the more dramatic the compounding effect.

Few forces in personal finance are as quietly powerful. And yet most people have never sat down and asked: what is my pension actually invested in? What return is my savings account generating? Is my money working as hard as it could be?

These aren’t complicated questions. But the answers — and the decisions that follow — could be worth hundreds of thousands of pounds over the course of a working life.

This isn’t about chasing high risk or picking individual stocks. It’s simply about understanding that where your money sits, and what it earns, has a compounding effect that few other financial decisions can match.

Before focusing solely on how much you’re contributing, it’s worth asking whether your money is positioned to grow as effectively as possible. What is your default pension fund investing in? Have you reviewed it recently? Have you ever spoken to an adviser about whether it’s right for you?

These conversations don’t have to be complicated — but they do have to happen.

MoneyMade™ can help point you in the right direction.