— Investment
Mutual Fund Expense Ratio Impact Calculator
See what a fund’s expense ratio really costs — a “small” 1% fee can quietly swallow a large share of your gains over the years.
Total lost to the fee in 20 years
$158,398.16
- Final value, net of fee
- $806,231.15
- Final value, zero-fee
- $964,629.31
- Annual return drag
- 1%
- Fees as % of gains
- 18.32%
- Total invested
- $100,000
— Year by year
| Year | Net value | Zero-fee value | Fee this year | Cumulative fees |
|---|---|---|---|---|
| 1 | $111,000 | $112,000 | $1,000 | $1,000 |
| 2 | $123,210 | $125,440 | $1,230 | $2,230 |
| 3 | $136,763.1 | $140,492.8 | $1,499.7 | $3,729.7 |
| 4 | $151,807.04 | $157,351.94 | $1,815.2 | $5,544.9 |
| 5 | $168,505.82 | $176,234.17 | $2,183.46 | $7,728.35 |
| 6 | $187,041.46 | $197,382.27 | $2,612.46 | $10,340.81 |
| 7 | $207,616.02 | $221,068.14 | $3,111.31 | $13,452.13 |
| 8 | $230,453.78 | $247,596.32 | $3,690.42 | $17,142.54 |
| 9 | $255,803.69 | $277,307.88 | $4,361.64 | $21,504.18 |
| 10 | $283,942.1 | $310,584.82 | $5,138.54 | $26,642.72 |
| 11 | $315,175.73 | $347,855 | $6,036.55 | $32,679.27 |
| 12 | $349,845.06 | $389,597.6 | $7,073.27 | $39,752.54 |
| 13 | $388,328.02 | $436,349.31 | $8,268.76 | $48,021.29 |
| 14 | $431,044.1 | $488,711.23 | $9,645.84 | $57,667.13 |
| 15 | $478,458.95 | $547,356.58 | $11,230.5 | $68,897.63 |
| 16 | $531,089.43 | $613,039.37 | $13,052.3 | $81,949.93 |
| 17 | $589,509.27 | $686,604.09 | $15,144.89 | $97,094.82 |
| 18 | $654,355.29 | $768,996.58 | $17,546.47 | $114,641.29 |
| 19 | $726,334.37 | $861,276.17 | $20,300.51 | $134,941.8 |
| 20 | $806,231.15 | $964,629.31 | $23,456.36 | $158,398.16 |
— Net vs zero-fee corpus
Download— How it works
Net return = gross − expense ratio. Total lost to the fee ≈ zero-fee corpus − net corpus.
Why a “small” fee isn’t small
A fund’s expense ratio is charged every year on your entire balance, so as your money grows the fee grows with it — and every pound taken in fees is a pound that stops compounding. That is why a figure that sounds trivial, 1% or 2% a year, turns into a startling sum over an investing lifetime. This calculator lays your real, after-fee corpus next to a zero-fee ideal so the gap between them — the money the fee quietly removed — is impossible to miss.
The model uses the standard simplification that a fund’s daily fee is equivalent to subtracting the expense ratio from the annual return: net return = gross − fee. Everything else follows from compounding that smaller rate.
Worked example — $100,000 lumpsum, 12% gross return, 1% expense ratio, 20 years: Zero-fee corpus: 100,000 × 1.12^20 ≈ $964,600. Net corpus (11%): 100,000 × 1.11^20 ≈ $806,200. The 1% fee cost about $158,000 — roughly 18% of all the gains you would have made.
Fees eat gains, not just principal
The most useful way to see the damage is as a share of your profit. Because the fee is taken from the growth as well as the principal, its total cost can equal a large slice of everything you actually gained — often 15–25% over a few decades at a 1% fee, and far more at 2%. The “fees as % of gains” figure makes that explicit: it is not a rounding error on your principal, it is a serious dent in your returns.
The year-by-year table shows the two corpora pulling apart, with the fee charged each year and the running total — the gap widens because the lost fees would themselves have compounded.
Direct vs regular plans
The starkest real-world version of this is the choice between a low-cost (often called direct or index) plan and a higher-cost (regular or actively managed) one. Enter a second expense ratio under Advanced options — say 0.5% against 1.5% — and the calculator shows both final corpora and the difference between them. For a long-running SIP that difference frequently runs into six figures, which is why low-cost funds have become so popular.
The same machinery handles a lumpsum, a monthly SIP, or a SIP with a starting lumpsum, so you can test the fee drag on whatever your actual plan looks like.
— Reader questions
How can a 1% fee cost so much?
Because it is charged every year on your whole balance, and the money taken can no longer compound. Over a couple of decades the lost fees — plus the growth those fees would have earned — add up to a large fraction of your total gains, far more than 1% of your principal.
What does “fees as % of gains” mean?
It is the total cost of the fee divided by the profit you would have made with no fee. It reframes the fee from a tiny annual percentage into the share of your actual returns it consumes — often 15–25% over decades, which is the figure that tends to shock people.
How do I compare a direct plan with a regular plan?
Enter your fund’s expense ratio as the main figure and the cheaper plan’s ratio in “Compare with expense ratio” under Advanced options. The calculator shows both final corpora and the difference — the money the cheaper plan would save you over the period.
Is subtracting the expense ratio from the return accurate?
It is the standard, widely used simplification. A real fund deducts a small slice of assets daily, which over a year is very close to reducing the annual return by the expense ratio. For planning purposes the difference is negligible.
Does a higher fee ever pay off?
Only if the pricier fund reliably earns enough extra return to more than cover its higher fee — which the evidence shows is rare and hard to predict in advance. This tool assumes the same gross return for both, isolating the cost of the fee itself.
What about exit loads and taxes?
An exit load is a one-time charge when you redeem; enter it under Advanced options and it is deducted from the net corpus. Tax and inflation can also be layered on to show the net corpus after tax and in today’s money.