Index Funds for Beginners: The NRI's Simplest Path to Investing
You don't need to pick stocks. Here's why low-cost index funds are the default — and the PFIC trap to avoid.
Sneha Rao
April 25, 2026 · 9 min read
Once your emergency fund is set and you're capturing your 401(k) match, the next question is investing the rest. The honest answer for most people is delightfully boring: low-cost index funds.
What an index fund actually is
Instead of betting on individual companies, an index fund buys a tiny slice of hundreds or thousands of them at once — for example, the 500 largest US companies. You get instant diversification, near-zero fees, and the long-run growth of the whole market.
Decades of data show that the vast majority of professional stock-pickers fail to beat a simple index fund over time. You don't need to be smarter than them; you need to not pay them.
Open a brokerage account
Any major US brokerage will do. Look for: no account minimum, commission-free trades, and access to low-expense-ratio index funds or ETFs. Expense ratios under 0.10% are the goal.
The NRI-specific trap: PFICs
Here's the one rule that trips up NRIs: do NOT hold Indian mutual funds while you're a US tax resident. The IRS classifies them as PFICs (Passive Foreign Investment Companies), and the tax treatment is punishing and paperwork-heavy.
The fix is simple: invest through US-domiciled funds while you're in the US. Keep your India and US investments cleanly separated.
A starter portfolio
- A total US stock market index fund as your core.
- A total international index fund for global exposure.
- A bond index fund if you want to dial down volatility.
That's it. Automate a monthly contribution, ignore the daily noise, and let compounding work over decades. Simplicity isn't a compromise here — it's the strategy.