Alpha Sandbox · your numbers

A 2% fee doesn't sound like much.
On ₹15,00,000 it quietly takes ₹7.33 lakh out of your next ten years.

A percentage fee is charged on everything you have, every year — so it grows exactly as fast as you do, and it takes the compounding with it. A flat monthly subscription does not. The numbers below are already filled in with a realistic starting point; change any of them and the whole model follows.

Your numbers

Pre-filled with a realistic starting point — the results on the right are already computed. Change anything you like; nothing here is fixed.

Starting point ₹15,00,000 at 15% for 10 years, against a 2% AUM fee — the industry's typical regular-plan expense ratio — and our ₹999 flat plan.
₹15,00,000
₹1L₹1Cr₹100Cr
₹0
₹0₹1,00,000₹2,00,000
15.0%
%
0%25%50%
10 yrs
yr
1 yr20 yrs40 yrs
2.0%
%
0%2.5%5%
₹999
₹499₹12,499₹24,999
After 10 years, on ₹15,00,000fees are the only difference modelled · before tax
Wealth lost to the percentage fee
Traditional mutual fund
MindForge flat fee
Total AUM fees drained
Total flat fees paid
Starting point

Portfolio value over time

Mutual fund MindForge

Switch to a flat fee →

Illustration only, not investment advice or a guarantee of returns. Both scenarios assume the same gross annual return, compounded yearly; the only difference modelled is the fee structure. Real mutual-fund expense ratios, exit loads and taxes vary. Past performance does not indicate future results.

How this is calculated
Both portfolios start at your initial investment and grow at the same expected annual return, compounded once a year. The only variable is how the fee is charged:
  • Traditional mutual fund (Scenario A): the AUM fee is a percentage skimmed off the return every year, so the portfolio compounds at return − AUM fee. Because it's a percentage of your whole corpus, the rupee cost grows as you do.
  • MindForge flat fee (Scenario B): the portfolio compounds at the full return, then a fixed annual amount (monthly fee × 12) is deducted at the end of each year. The fee never scales with your corpus.
  • Monthly SIP (optional, both scenarios): this engine compounds once a year, so a monthly contribution is modelled as SIP × 12 added at the end of each year — an ordinary annuity, and the conservative reading. The identical amount is paid into both portfolios, and because the AUM fee is charged on each year's opening balance, a contribution made at year end is not charged a fee for that year either.

The headline figure is the difference between the two final corpuses. It is shown as a loss rather than a saving because that is the direction the money actually moves: a percentage fee is levied every year on everything you hold, whether or not you do anything. It splits into two parts —

  • Extra fees handed over — total AUM fees minus total flat fees, in plain rupees.
  • Growth those fees never earned — the remainder, derived by subtraction so the two halves always sum to the headline. Money taken out in year 2 cannot compound in years 3 to 10, and on a long horizon this is the larger half.

On smaller portfolios with a low AUM fee a flat fee can genuinely cost more, and the panel says so in those words rather than hiding the case. Nothing here is a forecast: the return you type is applied identically to both scenarios, so the only thing this page ever compares is fee structure.