5 Best ETF Brokers for Index Fund Investing in 2026
Beatrice Quinn
- Fidelity, Vanguard, Interactive Brokers, eToro, and DEGIRO are the 5 best ETF brokers for index fund investing in 2026, each winning on a different axis: cost, fund lineup, global reach, or beginner accessibility.
- Total US ETF assets hit $13.4 trillion at the end of 2025 (ICI, 2026), and the average index fund now charges just 0.11% a year versus 0.59% for actively managed funds (Morningstar, 2026).
- “Best ETF broker” and “best CFD broker” are not the same question — this guide covers platforms for owning real ETF shares as part of an investment plan, not derivatives trading.
- Zero-commission trading is now standard among the top platforms; what actually separates them is fund selection, account minimums, and what happens to uninvested cash.
Choosing among the best ETF brokers for index fund investing comes down to three things: what it costs you to buy and hold, how wide the fund selection is, and whether the platform fits the account you actually need. Our research team compared account minimums, live fee schedules, and fund lineups across the market’s top platforms in July 2026, then narrowed the field to five that cover every type of investor — from a first brokerage account to a globally diversified investment plan. None of these are the CFD or spread-betting platforms this site usually covers; every broker below lets you buy and hold the actual underlying shares.
Best ETF Brokers Compared
| Broker | Commission (US-listed ETFs) | Account Minimum | Best For |
|---|---|---|---|
| Fidelity | $0 | $0 | Zero-fee index funds |
| Vanguard | $0 (Vanguard ETFs) | $0 | Long-term core holdings |
| Interactive Brokers | $0 (IBKR Lite) | $0 | Global/international ETFs |
| eToro | 0% (real ownership) | $0-$50 (region-dependent) | Beginners |
| DEGIRO | ~€1-2/trade (free on Core Selection) | $0 | Low-cost European investing |
Fee data reflects each broker’s published pricing as of July 2026, cross-referenced against NerdWallet’s broker comparison (updated 2026-07-14). Confirm current rates on the broker’s own site before opening an account, since promotional pricing changes.
How We Chose These ETF Brokers
We scored each platform on four factors: trading cost, fund selection breadth, account minimum, and how easy it is to automate a recurring investment plan.
A broker that nails one of those but fails the others didn’t make the cut — a $0-commission platform with a thin ETF lineup is not more useful than a slightly pricier one with global market access. We also cross-checked every fee figure against the broker’s live pricing page as of July 2026, since promotional rates and fine-print exceptions change often in this industry.
Every platform on this list clears three bars: it’s a real, regulated brokerage (not a CFD provider dressed up as one), it offers commission-free or near-zero-cost access to mainstream ETFs, and it has no history of unresolved regulatory action serious enough to threaten client asset safety. As always, confirm any broker’s current registration on its home regulator’s public register before funding an account — licenses and entity structures do change.
1. Fidelity: Best for Zero-Fee Index Funds
Fidelity is the only broker on this list with its own line of zero-expense-ratio index funds, alongside $0 commissions on online US stock and ETF trades and no account minimum. That combination makes it the default pick for an investor who wants to build a full index-based investment plan without paying recurring fund fees on top of trading costs.
When we cross-checked Fidelity’s published pricing against its two closest competitors, the $0 commission and no-minimum combination held up with no fine-print catch attached. Beyond the proprietary zero-fee funds, Fidelity’s ETF shelf covers the standard building blocks — total market, S&P 500, international, and bond ETFs from Vanguard, iShares, and Schwab’s own fund family, since Fidelity doesn’t restrict clients to in-house products. The mobile app and desktop platform are built for buy-and-hold investors first, with fractional-share investing so a recurring monthly contribution can go entirely into the market instead of sitting as a leftover cash balance.
Best for: investors who want to combine free index funds and free ETF trades in a single taxable or retirement account.
2. Vanguard: Best for Long-Term, Low-Cost Investing
Vanguard invented the retail index fund in 1976, and that origin still shapes the platform: it’s built around holding diversified, low-cost funds for decades rather than trading them. You don’t need a Vanguard brokerage account to buy Vanguard’s ETFs — funds like VOO and VTI trade commission-free on almost every other platform in this list too — but Vanguard’s own platform pairs them with account tools built specifically for retirement and long-horizon investment plans.
The tradeoff is a plainer trading interface than Fidelity or Interactive Brokers, with fewer real-time charting tools and a narrower non-Vanguard fund selection. For an investor whose plan is “pick a handful of broad index ETFs and add to them every month,” that’s a feature, not a gap — there’s less temptation to trade around a long-term position. Investors who want a wider marketplace of third-party ETFs or active trading tools alongside their index holdings should weigh that against Fidelity or Interactive Brokers.
Best for: buy-and-hold investors building a retirement portfolio around a small number of core index ETFs.
3. Interactive Brokers: Best for Global Market Access
Interactive Brokers (IBKR) is the pick for anyone whose index fund investing plan extends past US markets, offering $0 commissions on US-listed ETFs under its IBKR Lite tier alongside access to exchanges across Europe, Asia, and Latin America that most US-focused brokers simply don’t list. That global reach is the platform’s defining advantage over Fidelity and Vanguard, both of which are built primarily around US-domiciled funds.
IBKR Lite covers casual investors with no account minimum and no data-fee tier, while IBKR Pro switches to per-share pricing (as low as $0.0005/share) aimed at higher-volume traders who also want margin rates that are consistently among the lowest in the industry. The interface is noticeably more complex than Fidelity’s or eToro’s — it’s built for depth and control, not simplicity, so a first-time investor with a single monthly ETF purchase to make may find it more platform than they need. Note this is a different company from “Interactive Investor,” a separate UK-only broker also reviewed on this site — the names are similar, but they are unrelated platforms with different fee structures.
Best for: investors who want ETF and index fund exposure across international exchanges, not just US-listed funds.
4. eToro: Best for Beginners
eToro offers 0% commission on real stock and ETF trades — not CFDs, actual share ownership — through a mobile-first interface built for first-time investors rather than active traders. That combination of a genuinely free trading model and a simplified app makes it one of the more approachable ways to start an index fund investment plan without a steep learning curve, a point we cover in more depth in our full stock broker comparison.
The catches are worth knowing before funding an account: eToro charges a currency-conversion fee on any deposit not in USD, a flat withdrawal fee, and a monthly inactivity fee after a year of no logins, based on the platform’s published fee schedule. None of those apply to an investor who deposits in USD and stays active, but they matter for anyone comparing eToro’s advertised “commission-free” headline against a European alternative like DEGIRO, where the fee structure works differently.
Best for: first-time investors who want a simple app and real (non-CFD) fractional ETF ownership.
5. DEGIRO: Best for Low-Cost European Investing
DEGIRO is the strongest low-cost option for investors based in Europe, charging roughly €1-2 per trade on standard equities and ETFs plus a small handling fee, and offering a “Core Selection” list of ETFs that trade completely commission-free once a year. For a European-based investment plan built around monthly ETF purchases, that Core Selection list can make DEGIRO cheaper over time than a flat-fee US platform, once currency conversion is factored in. We go deeper on the full fee schedule and platform mechanics in our DEGIRO review.
Fund selection skews toward European and globally listed ETFs rather than the deep US mutual fund shelf Fidelity or Vanguard offer, and the platform interface is more utilitarian than eToro’s. For an investor whose index fund investing plan is anchored in euros rather than dollars, that tradeoff is usually worth it for the lower ongoing cost.
Best for: European investors who want the lowest ongoing cost on a recurring ETF investment plan.
ETF Investing vs. ETF CFD Trading
Buying an ETF through one of the five brokers above means owning the underlying shares — the fund’s price moves with its holdings, and there’s no leverage, no overnight financing charge, and no expiry. That’s different from trading an ETF via CFD, which is a leveraged bet on the fund’s price without ever owning the shares themselves, and which carries a materially different risk profile (retail CFD traders lose money significantly more often than they profit, per multiple EU regulator disclosures). If what you actually want is short-term, leveraged exposure to ETF price movements rather than long-term ownership, that’s a different product — see our Capital.com review for how a CFD-based platform handles that instead.
The Bottom Line on Choosing an ETF Broker
The best ETF brokers for index fund investing in 2026 are Fidelity and Vanguard for US-based, cost-conscious long-term investors, Interactive Brokers for global market access, eToro for first-time investors who want a simple app, and DEGIRO for the lowest ongoing cost in Europe. As Bryan Armour, Morningstar’s director of ETF and passive strategies research for North America, put it: “The real reason why [passive investing] has done so well is because of the cost story… that’s going to be hard for active managers to beat consistently” (Morningstar, 2026). Pick the platform that fits your account size and geography, keep costs low, and the rest of an index fund investment plan mostly takes care of itself. For a wider look at stock and ETF platforms beyond this top five, see our full stock brokers comparison.
Frequently Asked Questions
1. What’s the difference between an ETF and an index fund?
An index fund is any fund built to track a market index rather than pick stocks actively, and it can be structured either as a mutual fund or as an ETF. An ETF is simply the structure — it trades on an exchange all day like a stock, while a traditional index mutual fund only prices once per day after markets close. Most index investing today happens through the ETF structure because it’s cheaper to run and easier to trade.
2. Can I buy ETFs through any broker?
Nearly any brokerage that offers stock trading also offers ETF trading, since ETFs trade on the same exchanges using the same order types as individual stocks. The differences between brokers come down to which specific ETFs are commission-free, what the account minimum is, and whether fractional-share purchases are supported for smaller recurring contributions.
3. Do I need a minimum amount of money to start an ETF investment plan?
Four of the five brokers in this guide — Fidelity, Vanguard, Interactive Brokers, and DEGIRO — have no account minimum, and most support fractional shares so a monthly contribution of any size can go straight into the market. eToro’s minimum deposit varies by country, typically landing between $0 and $50.
4. Is my money safe in a brokerage account?
Regulated brokers segregate client securities from company assets and typically carry investor-protection coverage (such as SIPC in the US or equivalent schemes in other jurisdictions) that protects against broker insolvency, though not against market losses. Always verify a broker’s current regulatory status and protection scheme on the relevant regulator’s public register before depositing funds, since coverage details vary by country and by account type.
5. Which ETF broker is best for someone who has never invested before?
eToro and Fidelity are generally the most approachable starting points: eToro for its simplified mobile-first interface, and Fidelity for the combination of $0 commissions, no minimum, and a customer support structure built around retail investors rather than active traders.
About Author
