Investment Fee Impact Calculator
The Investment Fee Impact Calculator shows how much a small annual fee erodes your future balance compared with a no-fee scenario, highlighting the compounding cost of expense ratios.
What this means
Fees are deducted from your balance every year, so they compound against you just like returns compound for you. A 1% fee can erase a large share of your gains over 30 years.
How we calculate it
Formula
Gross FV = P(1+r)^n; net FV = P(1 + r − f)^n; fees = gross − net.Worked example
$100,000 growing at 7% for 30 years with a 1% fee:
- 1Gross future value ≈ $761,226
- 2Net future value ≈ $572,307
- 3Fees cost ≈ $188,919
Important assumptions
- Fees reduce the return each year over the full horizon.
- The return and fee stay constant.
Frequently asked questions
Why do small fees matter so much?
Because they compound. Over decades, even 0.5%–1% per year can mean tens of thousands of dollars less in your account.
What fees should I watch for?
Expense ratios on funds, advisory fees, and trading commissions. Comparing total costs is one of the few reliable edges a regular investor has.