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Compound interest
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See how a starting amount and regular contributions grow over time — and how much of the result is interest rather than money you put in.

Inputs changed — press Calculate to update the results.

Your initial investment of $100,000.00 plus your monthly investment of $500.00 at an annualized interest rate of 10% will be worth $3,113,983.90 after 30 years, compounded monthly.

Future value
$3,113,983.90
Contributions$280,000.00
Interest earned$2,833,983.90
Interest earnedContributions
$0$1.0M$2.0M$3.0M$4.0M08152330Years

For illustration only and not a guarantee of future returns. Where contributions are made more often than interest compounds, the annual contribution total is divided evenly across each compounding period; where contributions are made less often, the full contribution is applied when it is due.

BEHR

CAPITAL

© 2026 · Ontario, Canada

Behr Capital is a personal trade name of the company and is not itself a registered dealer or adviser.

All figures, returns, allocations, and holdings shown on this page are illustrative and for discussion purposes only. Past performance is not indicative of future results. Nothing herein constitutes an offer to sell or a solicitation to buy any security, or investment, tax, or legal advice. Private investments involve significant risk, including possible loss of capital and limited liquidity, and are available only to investors who meet applicable eligibility requirements.

BEHR

CAPITAL

© 2026 · Ontario, Canada

Behr Capital is a personal trade name of the company and is not itself a registered dealer or adviser.

All figures, returns, allocations, and holdings shown on this page are illustrative and for discussion purposes only. Past performance is not indicative of future results. Nothing herein constitutes an offer to sell or a solicitation to buy any security, or investment, tax, or legal advice. Private investments involve significant risk, including possible loss of capital and limited liquidity, and are available only to investors who meet applicable eligibility requirements.