a 0.25% fee looks tiny. but over 30 years it eats a lot.
expense ratio is the annual charge. funds take it every year. it covers management. administration. other costs. it comes out of returns before the investor sees anything. no separate bill. just lower returns.
what fees do to compounding
fees hurt twice. they reduce returns every year. and they reduce the amount that compounds.
two funds. same index. same gross return. one charges 0.05%. the other charges 0.50%. start with ₹10 lakh. assume 9.2% annual return before fees. after 20 years, the gap is significant.
over 30 years, a 1.50% fee can consume over 36% of growth. a 0.05% fund loses only 1.5% to fees.
john bogle said it best. “the more the manager takes, the less the investor makes.”
indian index fund costs
nifty 50 index funds charge between 0.07% and 0.50% for direct plans.
a fund charging 0.07% and one charging 0.35% track the same index. but the returns are not the same. over 20 years, a 0.28% difference on ₹10 lakh can cost nearly ₹3 lakh.
sebi lowered the expense cap for index funds and etfs to 0.90% from april 1, 2026. a 0.20% reduction can add roughly ₹2.95 lakh to ₹10 lakh over 20 years.
other costs matter too
tracking error is the gap between the fund and the index. lower is better. 0.02% is good. 0.19% means more drift.
etfs have hidden costs. bid-ask spreads. brokerage. securities transaction tax. an etf with low expense ratio but wide spread can cost more than an index fund with higher expense ratio.
what investors can control
expense ratio is not the only thing. but it is the one thing investors can control.
two funds tracking the same index will have similar gross returns. the lower-cost fund will almost always leave more money. that is simple math.
frequently asked questions
1. what is a good expense ratio for an index fund?
below 0.30% for direct plans is good. above 0.50% is high.
2. how much does a 0.25% expense ratio cost over 20 years?
on ₹10 lakh with 10% gross return, a 0.25% fee can reduce the final corpus by roughly ₹5-7 lakh.
3. does a higher expense ratio mean better fund management?
for index funds, no. it just tracks the index. higher fees do not improve tracking. they only reduce returns.
4. should i switch funds for a lower expense ratio?
switching costs money. exit loads and capital gains tax may offset the benefit. switch only if savings are substantial and tracking quality is similar.
5. how is the expense ratio deducted?
daily from the fund’s nav. no separate bill. the cost is invisible but real.
