How compound growth turns small deposits into real money

A $400 monthly deposit at a 6% annual return grows to roughly $185,000 in 20 years, and more than half of that is growth, not contributions.

The maths of compounding is simple, but its effect is hard to feel. In the early years, almost all of your balance is money you put in. After a decade, returns on earlier returns begin to outpace new deposits.

What it means for your portfolio

The practical lesson is that time and consistency beat timing. Raising a deposit by $100 a month early on often does more than chasing an extra percentage point of return later.

None of this is a forecast, and past performance does not predict future results. Fees, taxes and time horizon matter at least as much as the product itself, and a plan you can stick with through a bad year usually beats a clever one you abandon.

A $400 monthly deposit at a 6% annual return grows to roughly $185,000 in 20 years, and more than half of that is growth, not contributions.

The risks to weigh

This article is for information only and is not investment advice. Figures are illustrative and may be delayed or simulated for demonstration purposes.

Try it: move the yield, watch your numbers

If the 10-year yield were…

Illustrative model · not a quote
2.5%6.5%
$100k$800k
Typical 30-yr fixed rate
Yield + ~1.8% lender margin
Monthly payment
Fixed savings on $10,000
/ yr
At about on a 2–5 yr fixed deal
Monthly payment across yields · 30 years
2.5%3.5%4.5%5.5%6.5%

For information only — not investment advice.

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