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Compound Interest

Project how an investment grows over time with compounding and optional recurring contributions.

How to use Compound Interest

  1. Enter your starting amount and interest rate.
  2. Add a contribution and choose the compounding frequency.
  3. See the projected balance and interest earned.

Frequently asked questions

How does compounding frequency affect growth?
More frequent compounding (e.g. monthly vs yearly) earns slightly more because interest is added to the balance sooner.

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