Project the growth of a mutual fund investment with regular contributions, and see how much the expense ratio quietly costs you. Final value, contributions, growth, and total fees — instantly.
Growth after expense ratio
A mutual fund's expense ratio is the annual percentage it charges to manage your money. It sounds tiny — often 0.1% to 1% — but compounded over decades it can consume a surprising share of your wealth. This calculator projects your fund's growth from an initial investment plus monthly contributions, applies the expense ratio as a drag on the return, and shows how much those fees cost you versus an identical zero-fee fund.
For example, $10,000 plus $500/month for 20 years at an 8% gross return grows to roughly $300,000 at a 0% expense ratio — but a 0.5% expense ratio reduces it by tens of thousands of dollars. That's why low-cost index funds, often charging under 0.1%, have become so popular: minimizing fees is one of the few investment levers entirely within your control.
An expense ratio is charged every year on your whole balance, so its cost grows alongside your account — quietly compounding against you.
Index funds often charge under 0.10%. Over decades, choosing a 0.05% fund over a 1% fund can mean six figures of extra wealth.
Regular monthly contributions smooth out market ups and downs and harness compounding — the engine behind long-term fund growth.
Fund fees compound against you exactly as returns compound for you, which is why an expense ratio that sounds trivial produces an enormous gap over decades. The mechanism is simple subtraction — the fee reduces your annual return — but the effect is multiplicative over time. A 0.85% actively managed fund and a 0.04% index fund differ by 0.81 percentage points a year, which over twenty years removes roughly a seventh of the ending balance. Front-end loads and 12b-1 fees compound the problem, and the evidence that higher fees buy better performance is consistently weak.
Net return = Gross return − Expense ratioFV = P × (1 + net return)^nFee cost = FV at gross return − FV at net returnLoad-adjusted starting balance = P × (1 − front load)where:
Assumptions: Expense ratios are deducted daily from net asset value, so you never see a bill — which is precisely why they are easy to ignore. Turnover also creates taxable distributions in a taxable account, an additional cost not captured in the expense ratio.
Invest $100,000 in two funds with identical gross returns and different fees.
ResultThe 0.81% fee difference costs $64,691 over 20 years
That is 65% of the original investment, surrendered to a fee difference of less than one percentage point. The active fund would have to beat the index by 0.81% a year, every year, merely to break even — which most do not achieve over any sustained period.