Honestly, this confusion is super common and your colleague is right to nudge you toward passive investing — but let me break this down practically.
Index funds and ETFs both track the same index, say Nifty 50. Same underlying stocks, same logic. The difference is in HOW you buy them.
Index funds work exactly like any regular mutual fund. You go to Zerodha Coin, Groww, or directly to the AMC website — say UTI or HDFC AMC — and you put in ₹5000. They buy units at end-of-day NAV. No demat account needed. SIP works seamlessly. This is basically the zero-hassle option.
ETFs trade on NSE/BSE like stocks. You need a demat account, a broker. You buy at real-time market price during trading hours. The expense ratio is slightly lower — like Nippon Nifty BeES has an expense ratio around 0.04%, which is insanely cheap. But here's the catch most beginners miss: you can't do a proper SIP in ETFs easily. You have to manually buy every month, and you're dealing with bid-ask spread, which is basically a hidden cost nobody talks about. For large ETFs like Nifty BeES, liquidity is fine. But smaller ETFs? Sometimes the spread eats up whatever you saved on expense ratio.
For someone in your situation — ₹62k salary, no demat account, wants monthly SIP — just go with an index fund. UTI Nifty 50 Index Fund or HDFC Index Fund Nifty 50 Plan are solid choices. Expense ratio is around 0.10-0.20%, which is still way lower than your active large cap fund that's probably charging 1-1.5%.
The 0.1% difference between ETF and index fund expense ratio on ₹5000 per month? That's like ₹5 per month. Not worth the operational headache at your stage.
Once you're investing say ₹50,000+ a month and have a demat account for other reasons, revisit ETFs. Till then, index fund via SIP is the smarter beginner move. Start with UTI Nifty 50 — it's one of the oldest, most trusted passive funds in India.