Compound Interest

Contact

One inbox. Read by a human.

Found a bug, spotted a mistake in the methodology, or want a feature that would make the calculator genuinely better? Send a note. We read everything.

Email us

hello@realcompoundinterestcalculator.com

For the fastest reply, write a short subject line and include the URL of the scenario if your question is about a specific result. Scenario URLs encode every input, so sharing one is enough for us to reproduce what you're seeing.

Response time

We aim to reply within 2–3 business days. Bug reports with a reproducible scenario URL usually get a same-day acknowledgement.

Hours

Monday–Friday, 9:00–18:00 IST. We don't reply on weekends or public holidays.

What to write about

The notes we love getting.

  1. 01

    Bug reports

    Something displayed wrong? A number didn't match your spreadsheet? Paste the scenario URL, say what you expected, and what you saw. That's enough.

  2. 02

    Methodology questions

    Not sure how we handle start-vs-end-of-period deposits, inflation, or taxes? Ask. We'd rather explain than have the number be a black box.

  3. 03

    Feature requests

    Withdrawals during the horizon, variable rates, a new currency, a mode we haven't thought of — tell us what would make the tool indispensable for you.

  4. 04

    Corrections

    Typos, outdated numbers in an example, a misleading explanation — we fix these fast. Credit goes to the first person to flag an issue if you want it.

What we can't help with

  • · Personalized financial, investment, or tax advice — talk to a licensed professional.
  • · Account recovery or password resets — this site has no accounts.
  • · Guesses about future market returns — nobody knows, including us.
  • · Link-exchange or sponsored-content requests — we don't do those.

Prefer to just run the numbers?

The calculator is one click away — no sign-up, no wait.