For informational purposes only. Not financial, investment, or tax advice. Results are estimates based on the inputs provided. Consult a qualified financial professional before making financial decisions.
Calculator tool
How this calculator works
Use the explanation to understand the formula, assumptions, and practical limits behind the calculator result.
What This Calculator Measures
This calculator projects a mutual-fund-style investment using a lump sum, a monthly SIP, a steady gross return assumption, and an annual expense ratio. It shows the gross corpus before fees, the net corpus after the simplified fee adjustment, and the long-run fee drag.
Simplified Return Model
The tool reduces the annual return by the expense ratio before projecting growth:
It then compounds the initial investment and monthly SIPs over the selected period.
Worked Example
| Item | Value |
|---|---|
| Initial investment | 5,000 USD |
| Monthly SIP | 500 USD |
| Gross annual return | 8.00% |
| Expense ratio | 1.00% |
| Net annual return used | 7.00% |
The result panel shows how much of the final net corpus came from your own money and how much came from projected growth. It also compares the net result with the gross pre-fee projection so the fee drag is visible.
What the Expense Ratio Means
An expense ratio is the share of fund assets used each year to pay operating expenses. Investor.gov notes that fund fees reduce returns and that even small ongoing differences matter over time. The calculator captures that recurring drag in a simple way, but real funds may also have loads, redemption fees, transaction costs, taxes, or different share-class expenses.
What This Calculator Does Not Predict
- Actual market returns or volatility
- Loads, brokerage fees, taxes, or investor-specific account charges
- Changes in SIP size over time
- Cash distributions taken out instead of reinvested
Related Calculators
Use the Investment Calculator for a broader projection, the Average Return Calculator to analyze a completed period, and the Compound Interest Calculator when you want a pure rate-growth view without fund-specific fee language.
Frequently asked questions
Is subtracting the expense ratio from return exact?
It is a useful planning shortcut, not a full fund-accounting model. The expense ratio reduces fund assets over time, so lowering the assumed return by the expense ratio gives a clear estimate of long-run fee drag, but it does not model every fee or tax.
What is a SIP?
A SIP is a regular periodic investment, usually monthly. In this calculator it is treated as a fixed monthly contribution added throughout the projection period.
Why can the real result differ so much?
Real mutual funds do not earn one smooth return every year. Market swings, fund holdings, fees outside the expense ratio, taxes, cash distributions, and skipped or changed SIPs can all move the outcome.
How should I compare two funds with this calculator?
Keep the contribution pattern and gross-return assumption the same, then compare the expense ratios. That isolates fee drag. After that, compare strategy, risk, diversification, and actual fund documents separately.
