What is a monthly savings plan (and dollar-cost averaging)?

A monthly savings plan means putting in the same amount on the same day, every month, no matter what the price is doing. It quietly fixes the hardest problem: knowing when to buy.

🔎 Use a real ETF’s numbers (optional)

Starting amount € Added each month € Number of years Expected annual return %

Try:Rough historical ranges — your assumption, not a prediction or advice.

Adjust for inflation % (2% is a common example — shows the result in today’s money)

Projected value—

You put in—

Growth—

At year — · — — you’d have put in —, growth added —. Drag across the chart (or use ← → keys) to read any year.

Money you added Growth

See the key milestones (every 5 years)

Year	Put in	Growth	Balance

How this works: an educational scenario, not a forecast. We compound monthly and add your monthly amount each month. “Expected annual return” is your own assumption — pick a cautious one; real markets are bumpy and can fall. “Adjust for inflation” simply restates the result in today’s spending power. The fee figure includes the yearly fund fee (TER) and the growth those fees would otherwise have earned. The fund comparison repeats each fund’s last-12-months return every year — a rough illustration only, which real funds never do. Not advice.

Finance Hamster provides educational information about ETFs and investing. It is not investment, tax, or legal advice, and not a recommendation to buy or sell any security. Markets carry risk; do your own research or consult a licensed adviser.

👉 Change the numbers above — it’s your money, your assumptions.

Same amount, same day, every month

Say you put in €100 on the 1st of every month. The price keeps moving, so each €100 buys a different number of slices.

One month the price is €10, so your €100 buys 10 slices. Next month it dips to €5, so the same €100 buys 20 slices. The month after it is €20, so you get just 5 slices.

Here is the neat part: across those three months you spent €300 and own 35 slices. Your average price works out lower than the simple average of the three prices — because your fixed money automatically bought more slices when things were cheap and fewer when they were pricey. That is dollar-cost averaging, and you did nothing clever to get it.

Why this calms beginners down

The scary question for a new investor is “what if I buy today and it drops tomorrow?” A savings plan answers it for you: you buy a little bit at lots of different prices, so no single day matters much.

You also stop trying to predict the market, which almost nobody does well. The plan runs on autopilot, so you are less tempted to panic-sell on a bad week or pile in on an exciting one. For an basket that bounces around, that steadiness is the whole point. It will not stop prices falling — your pot can still drop in value — but it removes the pressure of getting the timing exactly right.

The honest catch: it is not magic

Here is the part the cheerful blogs skip. Dollar-cost averaging is not a way to make more money. It is a way to feel calmer and avoid timing mistakes.

If a market mostly rises over the years — which markets have often, though not always, done — then money you drip in later buys at higher prices. In that case, having invested it all at once at the start would have ended up ahead, simply because it spent more time growing.

So the trade is real: a savings plan lowers your stress and your risk of a badly timed lump, but it can also lower your end result in a steadily climbing market. Try the slider above with your own numbers to see the shape of it. Neither approach is “right” — this is education, not advice.

Common questions

So is a savings plan or a lump sum better?

Neither is always better, and that is the honest answer. A lump sum often wins when prices keep rising, because the money has more time to grow. A savings plan lowers the risk of putting it all in right before a drop, and it is far less stressful. This is education, not advice.

Does dollar-cost averaging remove the risk of losing money?

No. Buying at lots of prices smooths your average, but if the whole market falls, the value of what you hold falls too. It reduces timing risk, not market risk.

Do I have to pick the perfect day each month?

No — that is the whole point. You pick one fixed day and amount, and it repeats automatically. The whole idea is to stop guessing the “perfect” moment.