Index Fund Calculator
Project index fund value after contributions, market returns, and expense ratio drag.
- Last reviewed
- July 8, 2026
- Cost
- Free to use
- Data
- Runs in your browser
Projected Value
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Total Invested
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Projected Growth
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Net Annual Return
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Methodology
How this calculator handles inputs
This calculator uses the values you enter above and applies the formula explained in the guide below. Results update in the browser and are intended for quick planning, comparison, and sanity-checking.
- Use consistent periods, currencies, and units across inputs.
- Review any assumptions before using the result in a decision.
- Recalculate when rates, prices, tax rules, or business terms change.
Important note
This tool provides general planning information only. It is not tax, legal, financial, accounting, or investment advice. Check the current rules for your location and speak with a qualified professional before making a high-stakes decision.
Guide
How it works
Use this calculator to project index fund growth after expenses.
What this calculator does
The index fund calculator estimates ending value, invested capital, projected growth, and net annual return.
Index Fund Formula
Net Return = Index Return - Expense Ratio
Ending Value = Future Value of Contributions at Net Return
Example calculation
If you invest 10,000, add 500 per month, earn 7%, and pay a 0.05% expense ratio, the calculator projects long-term value.
When to use this calculator
- planning index fund investing
- estimating recurring contributions
- comparing expense ratios
- modeling long-term market returns
FAQs
Does this track a specific index?
No. Enter the return assumption for the index or fund you want to model.
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