What is an expense ratio?

The annual percentage of fund assets deducted for management and operating costs. It is invisible day-to-day — it simply lowers the reported return — which is why comparing funds by net IRR matters.

What is a sales charge?

A commission paid when buying (front-end load) or selling (deferred/back-end load) fund shares. Many brokers now offer no-load funds, making loads avoidable.

How much do fees really cost?

On $100k growing at 7% for 30 years, a 1% expense ratio costs roughly $270,000 in foregone gains versus a 0% fee — more than the fees themselves in absolute dollars.

Mutual Fund Calculator

Estimate the ending balance and net return of a mutual fund investment. The calculator tracks contributions, applies front-end sales charges, deferred loads and the annual expense ratio, then reports the net IRR and shows exactly how much fees drag down your growth versus a no-fee fund.

#mutual fund#expense ratio#sales charge#front load#net irr

Live calculate

Presets

Initial Investment

Annual Contribution

$/year

Monthly Contribution

$/month

Rate of Return

% / year

Holding Length

years

Additional Months

months

Sales Charge (front load)

Deferred Sales Charge

Operating Expenses

% / year

Live mode: results update as you type.

Ending Value

$92,181.47

Net return $9,228 · Net IRR 3.468% per year

Total Principal: $80,000.00
Initial Investment: $20,000.00
Total Contributions: $60,000.00
Net Return: $9,227.97
Net IRR: 3.468% / year
Sales Charge: $1,600.00
Operating Expenses: $1,353.50
Deferred Sales Charge: $0.00
Total Charges & Fees: $2,953.50
Fee Drag vs No-Fee Fund: $3,092

Fund value: with fees vs without fees

Where your money ends up

Initial Investment$20,000
Contributions$60,000
Fees & Charges$2,953
Net Return$9,228

Yearly growth

Year	Contributions to Date	Value With Fees	Value Without Fees	Fees to Date
Start	$20,000	$20,000	$20,000	$0
Year 1	$32,000	$33,169	$33,302	$618
Year 2	$44,000	$46,944	$47,285	$1,237
Year 3	$56,000	$61,351	$61,983	$1,855
Year 4	$68,000	$76,420	$77,433	$2,473
Year 5	$80,000	$92,181	$93,673	$3,092

A 1% expense ratio sounds tiny, but compounded over decades it can consume a quarter of your final balance. Index funds charge as little as 0.03% — every 0.1% you avoid compounds in your favor.

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Formula

Value_m = Value_{m−1}·(1 + (R − ER)/12) + contributions; Net Return = End − Principal − Charges; IRR solves NPV = 0

Pro tips

• Front-end sales charges (A-shares, often 2–5.75%) come off the top; no-load funds charge nothing.
• Compare the net IRR, not the headline return — it is the only number that includes every fee.
• 12b-1 fees, redemption fees and account fees stack on top of the expense ratio; read the prospectus.

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Mutual Fund Calculator

#mutual fund#expense ratio#sales charge#front load#net irr

Year

Contributions to Date

Value With Fees

Value Without Fees

Fees to Date

Start

$20,000

Year 1

$32,000

$33,169

$33,302

$618

Year 2

$44,000

$46,944

$47,285

$1,237

Year 3

$56,000

$61,351

$61,983

$1,855

Year 4

$68,000

$76,420

$77,433

$2,473

Year 5

$80,000

$92,181

$93,673

$3,092

Pro tips

• Front-end sales charges (A-shares, often 2–5.75%) come off the top; no-load funds charge nothing.

• Compare the net IRR, not the headline return — it is the only number that includes every fee.

• 12b-1 fees, redemption fees and account fees stack on top of the expense ratio; read the prospectus.

Mutual Fund Calculator

Fund value: with fees vs without fees

Where your money ends up

Yearly growth

Formula

Pro tips

FAQ

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Mutual Fund Calculator

Fund value: with fees vs without fees

Where your money ends up

Yearly growth

Formula

Pro tips

FAQ

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