How much do you need to start investing?

The most common reason people never invest is thinking they need a lump sum. You don't. You need a habit.

The short answer

On most UK investing platforms you can start with as little as £1 to £25 a month. There is no minimum fortune required. The barrier to investing was never money — it was starting.

Why the amount matters less than the time

Because of compounding, when you start matters far more than how much you start with. A small amount invested early and consistently beats a large amount started years later. Your earliest pounds have the longest to grow, so they're worth the most — which is exactly why waiting is so costly.

What small amounts actually become

£50 a month feels trivial. Invested steadily in a low-cost global index fund over several decades, at historic average returns, it can grow into a sum far larger than everything you put in — because the growth compounds on itself, year after year. The exact figure depends on time and returns, but the shape is always the same: small, boring, consistent inputs become something surprising.

Start where you are, then increase

Begin with an amount you genuinely won't miss — even £25 a month. Automate it. Then, each time your income rises, nudge the amount up a little. You'll barely feel it, and the habit does the heavy lifting. Starting small and increasing beats waiting until you can start big.

What if I have a lump sum?

Invest it the same way — into a broad, low-cost index fund inside an ISA — rather than leaving it in cash losing value to inflation. Don't wait to "have enough" first: the point of investing is that you don't need a lot, you need time in the market.

The bottom line

You can start investing with pocket change. The number that matters isn't how much — it's how many years you give it. Start small, start now, and let compounding take over. Read how to start investing in the UK for the exact steps.