Skip to main content
Calcimator

Index Fund Expense Ratio Impact Calculator

Compare how low vs high expense ratios impact total returns over time.

Inputs

%
%
%

Results

Low-cost fund value ($)

$231,757.00

≈ 6 Teslas

High-cost fund value ($)$200,847.00
Cost of higher fees ($)$30,909.00
Annual fee difference ($)$385.00
Fee drag (%)17.01%
CAGR difference (%)0.77%
How to Use This Calculator
  1. Enter your investment amount and the number of years you plan to invest.
  2. Set the expense ratio for the low-cost fund (e.g., 0.03% for a Vanguard index fund) and the high-cost fund (e.g., 0.80% for an actively managed fund).
  3. Input the expected annual return before fees for both funds.
  4. Compare Low-Cost Final Value versus High-Cost Final Value to see the dollar difference.
  5. Review Fee Cost Over Time to understand the cumulative drag — often tens of thousands of dollars on a long-term portfolio.

How the result changes with Years invested

Years investedLow-cost fund value ($)
5.9$79,212.00
18$198,804.00
33$628,018.00
45$1,576,194.00

What each input means

Investment amount ($)
Amount invested.
Years invested
Investment time horizon.
Low expense ratio (%)
Low-cost index fund ER (e.g., VTI 0.03%).
High expense ratio (%)
Higher-cost fund ER (e.g., active fund 0.80%).
Expected gross return (%)
Expected average annual return before fees.

What each result means

Low-cost fund value ($)
Final value with low expense ratio.
High-cost fund value ($)
Final value with high expense ratio.
Cost of higher fees ($)
Wealth lost to higher expense ratio.
Annual fee difference ($)
Yearly extra cost of the expensive fund.
Fee drag (%)
Percentage of returns consumed by fees.
CAGR difference (%)
Net return difference between funds.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Investment amount ($) = 50000, Years invested = 20, Low expense ratio (%) = 0.03, High expense ratio (%) = 0.8 = 5 input(s) provided
  2. Calculate Low-cost fund value
    Low-cost fund value = investmentAmount * pow(1 + netReturnLow / 100, yearsInvested)
    231757 = $231,757
  3. Calculate High-cost fund value
    High-cost fund value = investmentAmount * pow(1 + netReturnHigh / 100, yearsInvested)
    200847 = $200,847
  4. Calculate Cost of higher fees
    Cost of higher fees = round(fvLow - fvHigh)
    30909 = $30,909

Engine last updated . Checked against 1 independently-derived test — how we verify calculators.

Related Calculators

The questions that sit next to this one — chosen by subject, including calculators filed under a different category.

Investment Literacy

Real Estate vs Stock Market Calculator

Compare total returns from leveraged rental property vs index fund investing over time.

Actuarial Science

Loss Ratio Calculator

Calculate insurance loss ratios, expense ratios, combined ratios, and underwriting profitability metrics.

Investment Literacy

Robo-Advisor vs Self-Managed Calculator

Compare total fees and returns between robo-advisor and self-managed index fund portfolios.

Investment Literacy

Asset Allocation Calculator

Determine target stock/bond allocation using the 120-minus-age rule, adjusted for risk tolerance.

More in Investing & Retirement.