Index Investing in US Stocks: The Smartest Starting Point for Indian Investors

For Indian investors looking beyond domestic markets, the US stock market offers an unmatched combination of scale, depth, liquidity, and innovation. But given the sheer size and complexity of US equity markets, where do you even begin? The answer — backed by decades of return data and the endorsement of some of the world's most successful investors — is straightforward: start with index investing.

This guide explains what US index investing is, why the numbers make a compelling case for Indian investors specifically, how to access these markets through legal and tax-efficient routes, and what mistakes to avoid before you commit a single rupee.

What Is Index Investing?

Index investing means putting your money into funds that replicate the performance of a market index rather than attempting to pick individual winning stocks. Instead of researching hundreds of companies, you invest in a single instrument that mirrors an entire market or market segment — and your returns track that segment's collective performance.

In the US, the three major indices that form the backbone of index investing are:

The S&P 500 — tracks 500 of the largest publicly listed US companies by market capitalisation, spanning sectors including technology, healthcare, financials, consumer goods, and industrials. Companies like Apple, Microsoft, Amazon, Alphabet (Google), and Berkshire Hathaway are among its largest constituents.

The Nasdaq-100 — concentrates on the 100 largest non-financial companies listed on the Nasdaq exchange, heavily weighted toward technology. Its biggest holdings include Apple, Microsoft, Nvidia, Meta, and Tesla. The QQQ ETF, which tracks the Nasdaq-100, delivered annual returns of 25.72% in 2024, 56.42% in 2023, and 27.4% in 2021, though 2022 saw a sharp -32.6% decline, illustrating the index's higher volatility relative to the S&P 500.

The Dow Jones Industrial Average (DJIA) — the oldest of the three, covering 30 major US industrial companies including Boeing, Goldman Sachs, Johnson & Johnson, and Nike. It is the least used for passive investing because of its narrow scope, but it remains a widely watched barometer of US economic health.

How Large and Proven Are These Indices?

Before getting into why index investing makes sense for Indian investors, it helps to understand the scale of what you're investing in.

The annualized yearly return for the S&P 500 is 10.59% over the last 100 years, including reinvested dividends. This 100-year average incorporates some of the worst economic crises in modern history — the Great Depression, World War II, the 2008 financial crisis, and the COVID-19 pandemic — and still delivered over 10% per year on a compounded basis.

Breaking this down by time period: the S&P 500's average return for the last 10 years was 11.3%, for the last 20 years it was 8.4%, and for the last 30 years it was 9% — all in USD terms, before adjusting for inflation and before currency gains for Indian rupee-based investors.

In every rolling 20-year period from 1928 to 2005, the S&P 500 produced a positive annualized return, with the worst 20-year window delivering a modest 3.1% annually, and the best delivering 17.7%. This makes the S&P 500 one of the most statistically consistent wealth-building instruments over long horizons that any investor — anywhere in the world — has access to.

For the Nasdaq-100, the story is even more striking. The 20-year total return for QQQ (the Nasdaq-100 ETF) is 2,096.21%, and the 20-year average annual return is 16.69%. The 10-year total return is 640.99%. That said, the Nasdaq-100's higher returns come with meaningfully higher volatility, including severe drawdowns — making the S&P 500 a more appropriate starting point for most investors.

Why US Index Investing Makes Particular Sense for Indian Investors

1. Instant Diversification Across Sectors and Companies

Buying a single S&P 500 index fund instantly gives you ownership stakes across 500 of the world's largest companies spanning technology, healthcare, financial services, consumer staples, energy, and industrials — all in a single transaction.

This breadth eliminates what analysts call "company-specific risk." If one company in the index faces a scandal, a product failure, or a competitive disruption, it affects only a small fraction of your portfolio. Consider what a single S&P 500 ETF actually contains: Apple at roughly 7% of the index, Microsoft at around 6%, Nvidia, Amazon, Alphabet, Meta, and Berkshire Hathaway among its top holdings. You're not just investing in Apple's smartphone business — you're invested in cloud computing, digital advertising, electric vehicles, consumer finance, pharmaceuticals, and dozens of other industries simultaneously.

2. Exposure to the World's Most Innovative Companies

Many of the most transformative companies of the last three decades are listed in the US: companies that have reshaped how people communicate, shop, access information, and process payments. Importantly, these businesses are not merely American — they generate significant shares of their revenue globally. Apple sells iPhones in 170+ countries. Google serves advertisers across virtually every market. Amazon Web Services powers companies on six continents.

When you invest in a US index fund, you're indirectly participating in global economic growth, not just the US economy. This global revenue diversification is something Indian domestic indices don't offer in the same depth.

3. Evidence That Active Stock Picking Consistently Underperforms

One of the most robust findings in investment research is that the majority of actively managed funds, over time, fail to beat their benchmark index after accounting for fees.

A JPMorgan study found that investors on average achieved a 2.9% annual return, while the S&P 500 returned roughly 10% annually over the same period. The gap is largely explained by two factors: the high cost of active management (fund manager fees, transaction costs, and taxes from frequent trading), and investor behaviour (buying after rallies and selling during crashes — the opposite of rational long-term strategy). Index investing sidesteps both problems. You pay minimal fees, hold the market, and capture its full return rather than the diluted version that most active strategies deliver.

4. Rupee Depreciation Works in Your Favour

This is the dimension most Indian investors underestimate when thinking about US investing. The Indian rupee has depreciated significantly over the last decade, falling around 38% against the US dollar from ₹62.78 per dollar in March 2015 to ₹87.12 per dollar in March 2025. Research shows that over the last 5, 10, 15, and 20 years, the Indian rupee has depreciated by 3.9%, 3.4%, 4.3%, and 3.5% respectively, annually against the US dollar.

What this means in practice: if a US index fund delivers 10% in USD terms in a given year, and the rupee depreciates 3.5% against the dollar, an Indian investor effectively earns approximately 13.5% in rupee-adjusted terms — before accounting for any tax. This currency tailwind has historically added a meaningful annual cushion to USD-denominated returns for Indian investors.

Consider a concrete illustration. If you had invested ₹10 lakh in an S&P 500 index fund in 2015, when $1 was ₹62, your ₹10 lakh would have purchased approximately $16,129. The S&P 500's 10-year average annual return was 11.3%. Over 10 years at 11.3% CAGR, $16,129 would have grown to roughly $47,000. At today's exchange rate of approximately ₹94 per dollar, that translates to around ₹44 lakh — more than four times your original rupee investment — before taxes.

5. Significantly Lower Costs Than Actively Managed Funds

Index funds and ETFs are among the lowest-cost investment products available globally. The SPDR S&P 500 ETF (SPY), the world's largest ETF by assets, charges an expense ratio of just 0.09% per year. The Invesco QQQ (tracking the Nasdaq-100) charges 0.20% annually. Compare this to typical actively managed mutual funds — in India or globally — which commonly charge 1.5% to 2.5% per year in total expense ratios.

This cost difference compounds significantly over time. On a ₹10 lakh investment over 20 years at a 10% return, the difference between a 0.1% expense ratio and a 2% expense ratio amounts to roughly ₹15–20 lakh in additional wealth lost to fees — before even considering whether the active fund manager outperforms.

How Indian Investors Can Access US Index Funds

There are three primary routes, each with distinct cost structures and tax implications:

Route 1 — Direct Investment via LRS and International Brokers

The Liberalised Remittance Scheme (LRS), introduced by the RBI in 2004, allows every Indian resident individual to legally remit up to USD 2,50,000 per financial year for permitted investments abroad. The current TCS-free threshold (effective April 1, 2025) is ₹10 lakh per financial year — remittances up to this amount attract no TCS, and amounts above ₹10 lakh attract a 5% TCS that can be claimed back at the time of ITR filing.

Through this route, you can open an account with international brokers (such as Interactive Brokers, or India-facing platforms like INDmoney, Vested, or Groww's international investing feature) and directly buy US-listed ETFs such as SPY (S&P 500), QQQ (Nasdaq-100), or IVV (iShares Core S&P 500).

Route 2 — Indian Mutual Funds and ETFs Investing in US Markets

Several Indian AMCs offer fund-of-funds and feeder funds that invest in US indices, accessible in rupees through any Indian mutual fund platform without using your LRS limit. Examples include the Motilal Oswal Nasdaq 100 Fund of Fund, Mirae Asset NYSE FANG+ ETF, and Franklin India Feeder – Franklin US Opportunities Fund.

These India-domiciled funds are accessible via Zerodha, Groww, Paytm Money, or any MF distributor, and involve no LRS paperwork or TCS deduction. However, SEBI imposes an industry-wide overseas investment cap of USD 7 billion for Indian AMCs, which can intermittently restrict fresh inflows into some of these funds when the cap is reached.

Route 3 — NSE IFSC / GIFT City

GIFT City in Gandhinagar, Gujarat, allows Indian investors to access US stocks through unsponsored depository receipts listed on NSE IFSC, structured as INR-accessible securities backed by underlying shares held overseas. Each receipt represents a fraction of one US share, making high-priced stocks like Amazon or Google accessible at smaller ticket sizes. While the structure is promising, trading volumes remain lower than direct routes, and product coverage is narrower.

Tax Considerations for Indian Investors in US Index Funds

Understanding the tax treatment before you invest is essential, and the rules differ meaningfully by investment route.

For direct investment in US ETFs via LRS:

Gains from foreign stocks and ETFs held for 24 months or more are taxed as Long-Term Capital Gains (LTCG) at 20% (plus applicable surcharge and cess), with the benefit of cost indexation. Gains from holdings of less than 24 months are treated as Short-Term Capital Gains (STCG) and added to your total income, taxed at your applicable slab rate — which could be as high as 30% for those in the highest bracket.

Dividends from US stocks face a 25% US withholding tax for Indian residents after filing Form W-8BEN, and are then added to your total income and taxed again in India at your slab rate. US non-residents do not face US capital gains tax; gains are only taxed in India.

For Indian mutual funds investing in US markets:

These are treated as non-equity mutual funds for Indian taxation purposes since their underlying assets are foreign. For holdings above 24 months, LTCG is taxed at 12.5% without indexation. For shorter holding periods, gains are taxed at your applicable slab rate.

Key TCS note: TCS is not an additional tax — it is an advance tax collection mechanism under Section 206C(1G) that your authorised dealer bank deducts at the time of remittance. It is always refundable or adjustable against your tax liability when you file your ITR. Ensure your PAN is linked to Aadhaar, as failure to do so attracts a higher flat 20% TCS deduction regardless of amount remitted.

Common Mistakes Indian Investors Make in US Index Investing

Chasing individual US stocks without understanding valuations.

The appeal of buying Apple or Tesla directly is understandable, but individual stock picking reintroduces the very concentration risk that index investing eliminates. Most retail investors consistently underperform the index over 10+ year periods when picking stocks themselves.

Ignoring the rupee conversion impact on timing.

While rupee depreciation generally works in your favour over the long term, short-term spikes in USD/INR can affect the effective cost of your investment if you convert and invest at a particularly disadvantageous rate. Spreading your investment over time through regular, fixed-amount SIPs reduces this timing risk.

Treating the LRS limit as infinite.

 The USD 2,50,000 annual cap is per individual. Couples can effectively double this by investing through both partners' LRS limits. But exceeding the individual limit requires prior RBI approval and can create compliance complications.

Overlooking the taxation difference between routes.

Direct US ETF investing gives you the 20% LTCG rate with indexation after 24 months, while India-domiciled US funds give 12.5% without indexation after 24 months. The better option depends on your holding period, the inflation rate, and the magnitude of your gains — it is not a universal answer.

Investing without a long-term horizon.

In every rolling 20-year period from 1928 to 2005, the S&P 500 produced a positive annualized return — but this consistency only emerges over long holding periods. Individual years can and do produce negative returns (2022 saw a -19.44% return; 2008 saw -38.49%). Index investing works best when you have the patience to stay invested through downturns rather than selling in panic.

Building a Simple, Diversified US Index Portfolio

For a first-time Indian investor in US markets, a simple, cost-effective starting point could look like this:

Allocation	Fund / ETF	Index Tracked	Expense Ratio
70%	SPDR S&P 500 ETF (SPY) or iShares Core S&P 500 ETF (IVV)	S&P 500	0.09% / 0.03%
20%	Invesco QQQ Trust (QQQ)	Nasdaq-100	0.20%
10%	Vanguard Total International Stock ETF (VXUS) or similar	Global ex-US	0.07%

This three-fund portfolio covers 500 large US companies, a concentrated tech-growth overlay, and a global diversification component — at a blended expense ratio well under 0.15% per year.

Alternatively, for investors who prefer the Indian mutual fund route without LRS paperwork, a combination of the Motilal Oswal Nasdaq 100 Fund of Fund and the Mirae Asset S&P 500 Top 50 ETF Fund of Fund achieves similar exposure entirely in INR.

Final Thoughts

For Indian investors taking their first steps into global markets, US index investing offers the most compelling combination of proven long-term returns, built-in diversification, low cost, and simplicity. You don't need to predict which US company will dominate the next decade — you just need to own all of them collectively, and let time do its work.

The S&P 500's 100-year annualized return of 10.59%, combined with the INR's structural annual depreciation of 3–4% against the USD, creates a powerful compounding equation for Indian investors with a 10-to-20-year horizon — one that doesn't require expertise in US accounting, corporate governance, or sector analysis to benefit from.

Start simple. Start consistent. And give it time.

Frequently Asked Questions (FAQs)

1. What is index investing in US stocks?

Index investing involves buying a fund — either an ETF or a mutual fund — that replicates the performance of a US market index such as the S&P 500 or Nasdaq-100. Instead of picking individual stocks, you own a small slice of every company in the index. The S&P 500's annualized return has averaged 10.59% over the last 100 years including reinvested dividends.

2. Can Indian investors legally invest in US index funds?

Yes. Through the RBI's Liberalised Remittance Scheme (LRS), Indian residents can legally remit up to USD 2,50,000 per financial year for overseas investments, including US-listed ETFs like SPY, QQQ, and IVV. Indian investors can also access US market exposure through Indian mutual fund schemes that invest in overseas indices without using the LRS limit.

3. What is the S&P 500's historical return?

The S&P 500 delivered an average return of 23% in 2024 and 24% in 2023. Over longer periods, the average stock market return for the last 10 years was 11.3%, for the last 20 years it was 8.4%, and for the last 30 years it was 9% — all in USD terms with dividends reinvested.

4. How does rupee depreciation affect US stock returns for Indian investors?

In the last 10 years, the Indian rupee has depreciated by approximately 3.4% annually against the US dollar, falling around 38% from ₹62.78 per dollar in March 2015 to ₹87.12 per dollar in March 2025. This depreciation acts as a tailwind for Indian investors holding USD-denominated assets — when the rupee weakens, the value of US investments rises in rupee terms even without any change in the underlying USD price.

5. What is the tax treatment of US index fund gains for Indian investors?

Gains from foreign stocks and ETFs held for 24 months or more are taxed as Long-Term Capital Gains at 20% with indexation. Short-term gains (under 24 months) are added to total income and taxed at the individual's applicable slab rate. For India-domiciled US funds (mutual fund route), LTCG after 24 months is taxed at 12.5% without indexation.

6. What is the LRS limit for investing in US markets?

The LRS limit is USD 2,50,000 per resident individual per financial year. The TCS-free threshold for LRS remittances was raised to ₹10 lakh effective April 1, 2025, under the Finance Act, 2025.

7. What are the best US index ETFs for Indian investors to consider?

The most widely used options are the SPDR S&P 500 ETF (SPY) with an expense ratio of 0.09%, the iShares Core S&P 500 ETF (IVV) at 0.03%, and the Invesco QQQ Trust (QQQ) tracking the Nasdaq-100 at 0.20%. QQQ has delivered a 20-year average annual return of 16.69% with dividends reinvested. For Indian investors who prefer the MF route, the Motilal Oswal Nasdaq 100 Fund of Fund and Mirae Asset S&P 500 Top 50 ETF Fund of Fund offer rupee-based access without LRS paperwork.

8. Is US index investing better than picking individual US stocks?

A JPMorgan study found that investors on average achieved only a 2.9% annual return, while the S&P 500 returned roughly 10% annually over the same period — a gap driven by high active management fees and poor timing decisions. For most investors, particularly those new to US markets, index investing consistently outperforms individual stock picking over the long term.