Free · Updated for 2026

Mutual Fund Calculator

Project your mutual fund growth — after fees and expense ratios — over any time horizon.

Free mutual fund planner that models lump-sum and recurring SIP contributions, deducts expense ratio drag, applies exit loads, and shows you the exact dollar cost of every basis point.

  • Fees included
  • Instant results
  • No signup
  • Privacy-first
4.9 / 5 · 1,820 ratingsUsed by 24,500+ investorsModels expense ratio + load fees
Live projection
monthly compounding · fees included
Net final value
$422.3K
after 20 yrs
Gross (no fees)
$453.0K
at 10% gross
Fee drag
$30.6K
6.8% of corpus lost
Real annualized
11.88%
net of 0.5% fee
Headline
Lost to fees
$30.6K
at 0.5% expense ratio over 20 yrs — that's 6.8% of your gross corpus.
Switch insight
If expense ratio were 0.1%
+$24.3K
extra in your account by switching from 0.5% to a 0.1% index fund.
Compounding
Gains : contributed
2.25×
Every dollar you contributed grew 3.25× over the horizon.
Gross vs net
The fee gap — visualized
Gross (10%) — no feesNet (9.50%) — after 0.5% expense ratioThe gap = your fee drag.
Side-by-side

What fees actually cost you.

Metric
Gross (no fees)
Net (your fund)
Annual return
10%
9.50%
Total contributed
$130.0K
$130.0K
Final value
$453.0K
$422.3K
Total gains
$323.0K
$292.3K
Lost to fees
$0
$30.6K
Exit load applied
0%
0%
Shareable

Share the fee-drag picture.

A 1% fee doesn't sound like much. Show someone what it costs over 20 years.

lazysmirkmutual-fund-calculator
$500/mo + $10.0K · 20 yrs
$422.3K
Lost to fees: $30.6K (6.8%)
Gross return
10%
Expense ratio
0.5%
Net return
9.50%
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Quick Answers

Mutual Fund Calculator, in 30 seconds.

Direct answers to the most common questions, in plain language. Skim if you're in a hurry; dig deeper below.

How do mutual fund returns get reduced by fees?

Answer

Your net return = expected return minus expense ratio.

A mutual fund publishes a gross return assumption, but the fund deducts an annual expense ratio (often 0.5%–1.5%) before crediting you anything. Over 20–30 years, even a 1% drag can eat 20–30% of your final corpus.

What is a good expense ratio for a mutual fund?

Answer

Index funds: 0.03%–0.20%. Active funds: 0.5%–1.5%.

For passive index funds and ETFs, anything above 0.20% is expensive in 2026. Actively managed funds typically run 0.5%–1.5%, and you should expect them to beat the index by at least that much (most don't).

What is entry load vs exit load?

Answer

Entry load is charged when buying; exit load when selling.

Most modern funds have a 0% entry load. Exit loads of 0.5%–1% are common if you redeem within 1 year — designed to discourage short-term churn. Always check the fund's scheme document.

Does a mutual fund calculator account for taxes?

Answer

This one models fees, not taxes — they vary by country.

This calculator focuses on the fee drag because it's the only cost the fund company can quote up front. Capital gains taxes apply when you redeem and depend on your jurisdiction, holding period, and bracket.

How it works

How mutual fund calculator works.

The mechanics in short answers — no jargon, no upsell.

01

Gross return is what the fund quotes.

A fund's "12% annual return" is before fees are deducted. The actual return credited to your account is always lower than the headline number.

02

Expense ratio is deducted daily.

Funds quietly subtract the annual expense ratio from your NAV every business day. You never see a "fee" line item, but your return is reduced by exactly that much each year.

03

Compounding amplifies the drag.

A 1% fee on a 10% return is 10% of one year's gain. Over 30 years, the same 1% compounds into a 25–30% reduction in final corpus. The longer your horizon, the worse fees become.

04

Exit loads apply on redemption.

If you sell within the fund's exit-load window (often 1 year), a percentage of your final value is deducted before payout. Long-term holders typically avoid this entirely.

How to use

Four steps. About 20 seconds.

Designed so anyone can model their situation in under a minute, with or without a finance background.

  1. Step 1
    Enter your starting investment
    The lump-sum amount you're putting in today. Zero is fine if you only plan to do recurring contributions.
  2. Step 2
    Add your monthly contribution
    Recurring SIP amount you can sustain through market dips. Honesty here matters more than ambition.
  3. Step 3
    Set the expected return and expense ratio
    Use the fund's historical 5–10 yr return for the rate and the published expense ratio from the fact sheet.
  4. Step 4
    Read the fee drag headline
    The gap between gross and net is the dollar cost of the fund. If it's six figures, consider a lower-cost alternative.
Benefits

Why this matters.

See fees in dollars, not percentages

Convert a 1% expense ratio into the actual dollar value it costs you across 20+ years.

Compare gross vs net returns

Visualize the gap between what the fund advertises and what actually lands in your account.

Spot fund-of-funds double fees

When a fund holds other funds, you pay two expense ratios. This tool makes the cost visible.

Quantify the cost of switching

See how much you'd gain by moving from a 1% fund to a 0.1% index fund — usually six figures.

Model entry and exit loads

Built-in support for entry/exit load percentages, applied to your final value at redemption.

Lump-sum + SIP combined

Project a one-time investment plus recurring monthly contributions in a single, unified curve.

FAQ

Mutual Fund Calculator, answered.

Everything you might ask before, during, or after using this tool.

Written for borrowers, not bankersPlain-language, jargon-freeReviewed quarterly
What is the formula for mutual fund returns?

Future value uses monthly compounding: FV = P × (1 + r/12)^(12t) + PMT × [((1 + r/12)^(12t) − 1) / (r/12)], where P is the initial lump sum, PMT is the monthly contribution, r is the net annual return (gross return minus expense ratio), and t is years. Exit load, if any, is applied to the final value.

How does expense ratio affect mutual fund returns?

The expense ratio is deducted from the fund's gross return annually. A fund earning 10% gross with a 1% expense ratio credits you 9% net. Over 30 years, that 1% fee can reduce your final corpus by 25%–30% because the lost return would have compounded.

Are mutual funds with lower expense ratios always better?

For passive index funds, yes — they're tracking the same benchmark, so the cheapest one wins. For active funds, lower fees correlate strongly with better long-term net returns, but the manager's strategy and consistency still matter. Most active funds underperform their benchmark net of fees.

What is a fund of funds and why is it more expensive?

A fund of funds (FoF) holds units of other mutual funds. You pay the FoF's expense ratio AND the underlying funds' expense ratios. The total drag can be 2%+ annually — usually too high to justify unless the FoF provides genuine asset-allocation value.

Should I sell a mutual fund with a high expense ratio?

Maybe. Compare your current fund's 5-year net return vs. a low-cost index alternative's historical return. If the gap is less than the fee difference, switch. Account for exit load and capital gains tax in your switch math.

How accurate is a mutual fund calculator?

The math is exact. The accuracy depends on your inputs: expected return is an assumption, not a guarantee. Use the fund's 10-year CAGR as a starting point, then stress-test with a 2–3% lower return to see the conservative case.

Does the calculator include taxes?

No. Capital gains tax varies by country, holding period, and your income bracket — modeling it generically would mislead more than help. The fee drag shown is pre-tax; your real take-home is lower by whatever your jurisdiction's long-term capital gains rate is.

What return assumption should I use?

For US equity index funds, 7%–8% real (inflation-adjusted) is a defensible long-term assumption. For global equity, 6%–7%. For balanced/hybrid funds, 5%–6%. For debt funds, 3%–5%. Use the fund's own 10-year CAGR if it has one.

The expense ratio, plainly explained.

Every mutual fund charges an annual fee to cover its operating costs — manager salaries, research, compliance, distribution. That fee is the expense ratio, quoted as a percentage of your invested amount. A 1% expense ratio on a $100,000 holding is $1,000 a year, deducted invisibly from your NAV.

The trap is that the fee doesn't feel large in any single year. But because it's subtracted from your return before compounding, the foregone growth piles up. Over 30 years, a 1% fee on an 8% gross return reduces your final corpus by roughly 25%.

Active funds vs. index funds.

Index funds aim to match a benchmark. They're cheap (0.03%–0.20%) because they require no stock-picking — they just hold whatever the index holds, in the same proportions.

Active funds aim to beat a benchmark. They're expensive (0.5%–1.5%+) because someone has to do the picking. The challenge: roughly 80% of active funds underperform their benchmark over 10+ years, net of fees. The fee is real; the outperformance is not.

For most long-term investors, a low-cost index fund is the mathematically defensible default. Active funds only make sense if you have high conviction in a specific manager and are willing to monitor their performance against the benchmark.

Fund of funds and the double-fee problem.

A fund of funds (FoF) is a mutual fund that, instead of holding stocks or bonds, holds other mutual funds. The pitch is "one-click diversification." The cost is two layers of fees: the FoF's own expense ratio plus the expense ratios of the underlying funds.

A FoF charging 0.75% that holds funds with an average 0.85% expense ratio costs you 1.6% annually — before you've seen a single return. Unless the FoF provides genuine asset-allocation value you couldn't replicate with a 3-fund index portfolio, the double fee is hard to justify.

Common mutual fund mistakes.

  • Picking funds by past 1-year return — the worst possible signal of future performance.
  • Ignoring the expense ratio because "it's only 1%."
  • Holding the same actively managed fund for 20+ years without checking if it still beats its benchmark.
  • Stopping SIPs during market downturns — exactly when fixed-amount buying is most valuable.
  • Paying both an advisor fee AND a high-expense-ratio active fund — two layers of cost compounding against you.
  • Forgetting to factor exit load when switching funds within the lock-in window.
Trust & transparency

How this tool behaves, and what it isn't.

Two short notes worth reading before you trust any number on this page.

Privacy

Calculations run locally in your browser.

Your loan amount, rate, and prepayment inputs never leave your device. No accounts, no cookies on your numbers, no analytics on the values you type. Disconnect from the internet and it still works.

  • No account required
  • No data stored or sent
  • Works offline
  • No third-party trackers
Disclaimer

Lazysmirk is a tools platform, not a financial institution.

We are not a bank, NBFC, advisor, broker, or distributor of any financial product. The numbers shown here are estimates for educational purposes only, based on the inputs you provide.

Results are not financial, legal, or tax advice. Please consult a qualified professional before any decision about your loan, investments, or personal finances. Actual loan terms and charges depend on your bank and individual circumstances.