About Compound Peak

What this site is

Compound Peak is a free compound interest calculator. Type what you have today, what you can add and how often, the return you expect and how long the money can sit, and the page prints the balance at the end, how much of it you paid in and how much of it is interest. The same plan is drawn as a chart and a year-by-year table, and beside the tool is a short article on what the answer means.

There is no account and no sign-in. The plan lives in the page address, so a link carries it and a reload restores it, and a scenario you save stays in your own browser.

Who runs it

Compound Peak is run by Laksh Prabhu Dessai, an individual based in India. Write to [email protected] about anything on the site — a question, a correction or a request about your data.

How the figures are worked out

Every number the page prints comes from one calculation, run by the same engine the tool uses. The example plan the page opens on was checked against investor.gov's own calculator, and the two agree to the cent on the same assumptions: a steady return, deposits at the end of each period, and no tax unless one is set.

The assumptions matter more than the arithmetic. A plan that assumes a constant return will not match a real one year by year, and fees, tax and inflation all take a share of the growth. This is general information, not financial advice.

Why it is free

The site is supported by advertising served by Google AdSense and by analytics that count visits. Neither changes a figure on the page, and the plan you type is never sent to either of them. What they collect, and how to refuse it, is set out in the privacy policy.

Corrections

If a figure looks wrong, send the inputs you used — starting amount, contribution and its frequency, return, compounding and years, plus any fee, withdrawal or step-up — and the answer the page gave. The arithmetic can be checked against the engine, and a fix ships with the next build. The contact page has the rest.