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Regular Investing in ETFs: How It Works

Investing with automatic regular contributions, instead of a single lump sum.

Updated August 2026 ยท 6 min read

A regular investing plan involves periodic contributions of a fixed amount (e.g. monthly) into one or more ETFs, instead of a single lump-sum investment.

How it works in practice

You set an amount and a frequency (e.g. โ‚ฌ200 a month), and the broker automatically buys the chosen ETF at each interval, regardless of the market price at that moment.

The benefit of pound-cost averaging

By investing the same amount at regular intervals, you automatically buy more units when the price is low and fewer when it's high โ€” an effect known as pound-cost (or dollar-cost) averaging, which tends to smooth the purchase price over time.

What to consider when choosing a broker

For regular investing, ongoing costs matter most: a fixed commission per order or a custody fee weighs proportionally more on small, frequent contributions than it would on a single large deposit.

More detail: we've compared brokers specifically for this purpose in our ranking of the best brokers for regular investing.