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Dollar-Cost Averaging Calculator

Model consistent monthly investing and separate contributed dollars from estimated growth.

How the estimate works

The calculator compounds the starting balance monthly and adds the same contribution at the end of each month.

Important limitation

A constant return is used for illustration; actual markets fluctuate and can lose value. Results are estimates only and are not financial, lending, legal, tax, or investment advice.

Assumptions and review

Formula review: July 29, 2026. This tool uses only the editable values shown above and does not pull live rates, prices, balances, or account data.

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Frequently asked questions

How does the dollar-cost averaging calculator work?

The calculator compounds the starting balance monthly and adds the same contribution at the end of each month.

Is this dollar-cost averaging calculator exact?

No. It is a planning estimate based on the values you enter. Actual rates, fees, timing, taxes, and provider rules can change the result.

Can I change the assumptions?

Yes. Every displayed input is editable so you can compare scenarios instead of relying on a hidden default.

Dollar-Cost Averaging Calculator