This is not investment advice. The information provided is for educational and informational purposes only and does not constitute a recommendation to buy or sell any financial product.
ETF investing is the simplest, lowest-cost way to build a diversified portfolio. The broker you choose determines which ETFs you can buy commission-free, whether you can buy fractional shares, and how much you pay in ongoing costs. In 2026, all four brokers covered here offer $0 ETF commissions — so the differences come down to fractional shares, fund selection, international access, and platform quality.
Top 4 Brokers for ETF Investing in 2026
1. Fidelity — Best Overall for ETF Investors
Fidelity removed commissions on all US-listed ETFs in 2019 and never brought them back. Every major ETF trades commission-free: iShares (ITOT, IVV, AGG), Vanguard (VTI, VOO, BND), Schwab ETFs, SPDR funds, and thousands more. There are no restrictions on which ETFs qualify — if it trades on a US exchange, it costs $0 to buy or sell. No account minimum. No trading minimums.
The standout feature for ETF investors is fractional shares from $1. You can invest exactly $100 into VTI even when the share price is $260 and own 0.3846 shares. Every dollar works immediately — no cash drag from uninvested balances. You can set up automatic recurring investments of any dollar amount into any ETF. Schedule $200 every Monday into VTI, $100 every other Friday into VXUS, and the orders fill at your exact dollar amounts. Fidelity's DRIP (dividend reinvestment) automatically buys fractional shares of the same ETF at no cost.
Fidelity's Zero index mutual funds (FZROX, FZILX, FNILX, FZIPX) carry a 0.00% expense ratio. They are not ETFs, but in a tax-advantaged account (IRA, 401k), they serve the same buy-and-hold purpose with zero ongoing costs. For taxable accounts, stick with ETFs for their tax efficiency.
Account minimum: $0. Mobile app rated 4.8/5 on iOS. Customer support 24/7 by phone, chat, and in 200+ US branch locations. Fidelity offers a basket portfolio feature that lets you build and rebalance a custom ETF allocation in one click.
2. Vanguard — Lowest-Cost ETF Provider
Vanguard created the first index fund in 1976 and remains the low-cost leader in 2026. VTI (Total US Stock Market, 0.03% expense ratio) holds 3,700+ stocks and costs $3 per year for every $10,000 invested. VOO (S&P 500, 0.03%), VXUS (Total International, 0.07%), and BND (Total Bond Market, 0.03%) together give you a complete global portfolio for a blended expense ratio under 0.05%.
Vanguard's mutual ownership structure is unique in the industry: the funds own the management company, so profits flow back to investors as lower expense ratios. In 2026, Vanguard manages over $8 trillion in assets and continues to reduce fees across its lineup. The company's incentives align with yours — when costs go down, you keep more of the returns.
Fractional share investing at Vanguard is limited to Vanguard ETFs only. You cannot buy fractional shares of iShares, Schwab, or SPDR ETFs. For investors building a Vanguard-only portfolio — VTI, VXUS, BND and nothing else — this is adequate. For investors who mix ETF providers, it is a limitation. Vanguard's platform and mobile app (4.2/5 on iOS) are functional but less polished than Fidelity or Schwab. For buy-and-hold investors who log in once per quarter, the platform quality matters less than the fund costs.
Account minimum: $0 for brokerage accounts. Some mutual funds require a $3,000 minimum initial investment (Admiral shares), but ETFs have no minimum beyond the share price.
Full review. See the index fund investing guide.
3. Charles Schwab — Broadest Commission-Free ETF and Mutual Fund Selection
Schwab was the first major broker to eliminate ETF commissions. Today, all US-listed ETFs trade commission-free on Schwab's platform. Schwab's own ETFs carry industry-competitive expense ratios: SCHB (US Broad Market, 0.03%), SCHF (International Developed, 0.06%), SCHE (Emerging Markets, 0.05%), and SCHZ (US Aggregate Bond, 0.03%).
Where Schwab stands apart is in its fund universe beyond ETFs. Over 4,000 no-transaction-fee mutual funds are available, including Schwab's own index funds (SWTSX at 0.03%, SWISX at 0.06%, SWAGX at 0.04%). No other broker matches the breadth of no-fee fund options. The thinkorswim trading platform provides advanced charting, screening, and analysis tools for investors who want deeper research capabilities alongside their ETF holdings.
One notable gap: Schwab does not offer fractional ETF shares. Schwab Stock Slices let you buy fractional shares of S&P 500 individual stocks from $5, but this program does not include ETFs. If you invest $500 monthly and VTI trades at $260, you buy 1 share and $240 sits idle in cash. Over a year, that is $2,880 uninvested. Over 20 years, the opportunity cost of this cash drag is substantial. For ETF investors who dollar-cost average in fixed dollar amounts, this is Schwab's biggest weakness.
4. Interactive Brokers — Best for Global ETF Access
Interactive Brokers connects to exchanges in 33 countries, giving you access to ETFs listed in London, Tokyo, Frankfurt, Hong Kong, Toronto, and Mexico. If you want exposure to Irish-domiciled ETFs (popular with non-US investors for estate tax reasons), country-specific ETFs unavailable in the US market, or international fixed-income ETFs, IBKR is the only major US broker that provides this access.
US-listed ETFs trade commission-free on IBKR Lite. IBKR Pro charges approximately $0.005 per share with a $1 minimum — negligible for most ETF trades. Currency conversion happens at the spot rate with a $2 minimum per transaction, cheaper than any other broker. European-listed ETFs carry exchange-specific fees that vary by country and exchange.
Fractional ETF shares are available for select US-listed ETFs at IBKR, but availability depends on liquidity and market cap criteria set by the broker. Not every ETF qualifies. The Trader Workstation (TWS) platform is extremely powerful but carries a steep learning curve. For a simple buy-and-hold ETF portfolio of two to four funds, TWS is overkill. Use IBKR only if you need international ETF access or want the lowest margin rates in the industry.
ETF Investing at a Glance
| Feature | Fidelity | Vanguard | Schwab | IBKR |
|---|---|---|---|---|
| ETF commission (US) | $0 | $0 | $0 | $0 |
| Fractional ETF shares | Yes, $1+ | Vanguard ETFs only | No | Select ETFs |
| Own ETF exp. ratio range | N/A (partners) | 0.03% – 0.15% | 0.03% – 0.08% | N/A (access) |
| No-fee mutual funds | Zero funds (0.00%) | Admiral shares | 4,000+ NTF | Limited NTF |
| International ETF access | US-listed only | US-listed only | US-listed only | 33 countries |
| DRIP (dividend reinvest) | Yes | Yes | Yes | Yes |
| Automatic ETF investing | Yes | No (mutual funds only) | No (mutual funds only) | No |
| Account minimum | $0 | $0 | $0 | $0 |
| Mobile app rating | 4.8 | 4.2 | 4.7 | 4.4 |
ETF Investing Strategy — Lazy Portfolios for Every Broker
A lazy portfolio uses two to four ETFs, requires minimal maintenance, and historically outperforms most actively managed funds. Rebalancing takes 10 minutes once per year. Here are three portfolios you can build at each broker with exact tickers and costs.
The 1-Fund Portfolio: Total World Stock
One ETF that covers global stocks at market-cap weight. Zero rebalancing. Zero decisions after the initial purchase.
| Ticker | Name | Expense Ratio | Holdings |
|---|---|---|---|
| VT | Vanguard Total World Stock ETF | 0.07% | 9,800+ stocks, ~60% US / 40% International |
VT is available commission-free at Fidelity, Schwab, and Vanguard. Annual cost on a $100,000 portfolio: $70. No simpler portfolio exists.
The 2-Fund Portfolio: US + International
Two ETFs let you control the US/international split. Typical allocations range from 60/40 to 80/20 US/international. You rebalance once per year.
| Role | Fidelity Pick | Vanguard Pick | Schwab Pick |
|---|---|---|---|
| US Stocks | VTI (0.03%) or ITOT (0.03%) | VTI (0.03%) | SCHB (0.03%) |
| International Stocks | VXUS (0.07%) or IXUS (0.06%) | VXUS (0.07%) | SCHF (0.06%) + SCHE (0.05%) |
At a 70/30 allocation, the blended expense ratio is 0.042% to 0.048% depending on the broker and ticker selection. On a $250,000 portfolio, that is $105 to $120 per year in fund fees.
The 3-Fund Portfolio: US + International + Bonds
Add a bond ETF to reduce portfolio volatility. The bond allocation typically increases as you approach retirement. A common starting point is "age minus 20" in bonds.
| Role | Fidelity Pick | Vanguard Pick | Schwab Pick |
|---|---|---|---|
| US Stocks | VTI (0.03%) | VTI (0.03%) | SCHB (0.03%) |
| International Stocks | VXUS (0.07%) | VXUS (0.07%) | SCHF (0.06%) + SCHE (0.05%) |
| US Bonds | BND (0.03%) or AGG (0.03%) | BND (0.03%) | SCHZ (0.03%) |
At a 60/30/10 allocation, the blended expense ratio is approximately 0.038% at Fidelity, 0.043% at Vanguard, and 0.042% at Schwab. On a $250,000 portfolio, the annual cost difference between the three brokers is under $15. Choose the broker whose platform and features you prefer — the fee differences on a three-ETF portfolio are rounding-error small.
Fractional Shares and ETF Investing
Fractional shares mean you can invest a fixed dollar amount regardless of the ETF's share price. Without fractional shares, a $500 share price forces you to buy in $500 increments. Every dollar above the next whole share sits in cash, creating drag on your returns.
Fidelity leads in fractional ETF shares. Invest as little as $1 into any US-listed ETF. Set up automatic recurring investments — $200 every Monday into VTI, $100 every other Friday into VXUS — and the orders execute at your exact dollar amounts. Fractional DRIP automatically buys fractional shares with dividend payments down to $0.01.
Vanguard supports fractional shares only for Vanguard ETFs — VTI, VOO, BND, VXUS, and the rest of the Vanguard lineup. You cannot buy a $50 slice of ITOT or SCHB. For Vanguard-only investors, this is sufficient. For investors mixing non-Vanguard ETFs, this limitation means those positions must be bought in whole shares.
Schwab does not offer fractional ETF shares. Schwab Stock Slices ($5 minimum, S&P 500 stocks only) does not include ETFs. If VTI trades at $260 and you deposit $500 per month, you buy 1 share and carry $240 in cash. At $500 per month for 20 years at a 7% market return vs 0% on idle cash, the opportunity cost exceeds $120,000.
Interactive Brokers offers fractional shares for select US-listed ETFs based on liquidity and market cap criteria. Availability varies by symbol. Confirm your specific ETFs are eligible on IBKR before funding the account for fractional investing.
Fractional shares matter most for investors who dollar-cost average fixed dollar amounts. If you always invest $500 per month, fractional shares ensure all $500 goes to work immediately. Without them, your effective contribution is always slightly less than your intended contribution.
The 30-Year Cost of Your ETF Broker Choice
Small differences in expense ratios compound into large sums over an investing lifetime. Here is what a $500 monthly investment looks like over 30 years at different cost levels.
| Scenario | Annual Cost (Year 1) | Portfolio After 30 Years | Total Fees Over 30 Years | Fee Impact |
|---|---|---|---|---|
| Fidelity Zero funds (0.00%) | $0 | ~$566,000 | $0 | Baseline |
| Vanguard ETFs (0.03%) | ~$15 | ~$560,000 | ~$12,500 | −$6,000 |
| Average active ETF (0.50%) | ~$250 | ~$475,000 | ~$165,000 | −$91,000 |
| High-cost fund (1.00%) | ~$500 | ~$405,000 | ~$280,000 | −$161,000 |
Assumptions: $500 contributed monthly, 7% annual return before fees, 30-year horizon, fees deducted from returns. Numbers rounded to the nearest thousand. Actual results depend on market returns and contribution patterns.
The gap between Vanguard ETFs (0.03%) and an average-cost ETF (0.50%) over 30 years is approximately $91,000. Between Fidelity Zero funds and a 1.00% expense ratio fund, the gap exceeds $160,000. This is money lost to costs — not market volatility, not bad timing, not investment selection. Just the arithmetic of fees subtracted from compounding returns.
All four brokers in this guide charge $0 for US-listed ETF trades. The trading commission is no longer a differentiator. The ongoing expense ratio is the cost that compounds — for or against you — over decades. Choose the lowest-cost broad-market ETF available at your chosen broker and hold it.
Tax Efficiency of ETFs vs Mutual Funds
ETFs are structurally more tax-efficient than traditional mutual funds. When a mutual fund sells a holding at a gain, it must distribute that capital gain to all shareholders — even those who did not sell a single share during the year. These capital gain distributions are taxable events.
ETFs bypass this problem through an in-kind creation and redemption process. Authorized participants (large institutions) exchange baskets of underlying securities for ETF shares (or vice versa), allowing the ETF to dispose of low-basis shares without triggering taxable events for remaining shareholders. In practice, broad-market ETFs like VTI, ITOT, and SCHB have not distributed capital gains in over a decade.
In 2026, major index mutual funds from Vanguard and Fidelity have also been capital-gains-free for years. Vanguard's patent on the ETF-as-a-share-class structure (expired in 2023) let Vanguard mutual funds share the tax efficiency of their ETF counterparts. Fidelity index mutual funds have avoided capital gain distributions through tax-management techniques. However, this is not guaranteed — a wave of investor redemptions can force a mutual fund to sell holdings and distribute gains.
The practical rule: use ETFs for taxable brokerage accounts where tax efficiency matters. In IRAs and 401(k)s, tax efficiency is irrelevant since all transactions within the account are tax-deferred or tax-free. In tax-advantaged accounts, choose whichever vehicle — ETF or mutual fund — has the lowest expense ratio and best fits your dollar-cost averaging needs.
What Else to Look For in an ETF Broker
Automatic ETF investing. Fidelity is the only major broker that supports automatic recurring investments into ETFs. You can schedule dollar-based recurring purchases of any US-listed ETF on any interval. Vanguard and Schwab support automatic investing only for mutual funds, not ETFs. If you want to fully automate your ETF dollar-cost averaging, Fidelity is the only choice.
Portfolio rebalancing. None of the major self-directed brokers offer automatic rebalancing of ETF portfolios. Rebalancing is a manual process that takes 10 minutes once per year. Robo-advisors (Schwab Intelligent Portfolios, Fidelity Go, Vanguard Digital Advisor) do offer automatic rebalancing but carry management fees or cash drag as a trade-off.
Securities lending revenue. When you hold ETFs at a broker, the broker may lend your shares to short sellers and earn revenue. Fidelity credits a portion of this lending revenue to client accounts. Schwab shares lending revenue with clients enrolled in its securities lending program. Vanguard returns all securities lending revenue to the funds, indirectly benefiting fund shareholders. IBKR splits lending revenue 50/50 with the client.
Account types. All four brokers offer individual, joint, IRA (Roth/Traditional/SEP/SIMPLE), trust, and custodial accounts. Fidelity adds a Cash Management Account that combines checking features with ETF investing — useful for consolidating banking and investing at one institution.
FAQ: Best Brokers for ETF Investing
Should I buy ETFs or mutual funds? ETFs trade throughout the day like stocks, are typically more tax-efficient, and have no minimum investment beyond the share price (or $1 with fractional shares). Mutual funds trade once per day at the net asset value (NAV), often require minimum initial investments ($1 to $3,000), and may distribute capital gains. For most retail investors in tax-advantaged accounts, the difference is small. Choose the vehicle with the lowest expense ratio at your broker.
How many ETFs do I need? Two to four ETFs are sufficient for nearly all investors. A total US market ETF, a total international ETF, and optionally a bond ETF. Adding more ETFs — sector funds, thematic ETFs, factor tilts — increases complexity, cost, and the temptation to trade. More funds do not equal more diversification if the underlying holdings overlap.
Can I start ETF investing with a small amount of money? Yes. At Fidelity, invest $1 into any US-listed ETF with fractional shares and automatic recurring investments. At Vanguard, buy fractional shares of Vanguard ETFs with any dollar amount. At Schwab, you need at least one whole share — if VTI trades at $260, you need $260 to start. At IBKR, fractional shares are available for select ETFs but not guaranteed for every symbol.
Which broker has the lowest ETF expense ratios? The lowest-cost ETFs — VTI (0.03%), ITOT (0.03%), SCHB (0.03%) — are available at all four brokers. Fidelity's proprietary Zero index funds (FZROX at 0.00%, FZILX at 0.00%) are mutual funds, not ETFs, but serve the same role in tax-advantaged accounts. The ETF expense ratio you pay depends on which fund you choose, not which broker you choose — all four offer the same ETFs at the same cost.
Do I need a broker that offers its own ETFs? No. You can hold Vanguard ETFs at Fidelity, Schwab ETFs at Vanguard, or iShares ETFs at Schwab. ETFs are exchange-traded products — the broker and fund provider do not need to match. The only exception is some mutual funds (Fidelity Zero funds must be held at Fidelity). For ETFs specifically, cross-broker compatibility is universal.
Is Interactive Brokers overkill for a simple ETF portfolio? For a straightforward buy-and-hold portfolio of two to four ETFs, IBKR's Trader Workstation carries unnecessary complexity. Fidelity, Vanguard, or Schwab provide simpler interfaces and — in Fidelity's case — automatic recurring ETF investments that IBKR does not match. Use IBKR only if you need international ETF access across 33 countries or want the lowest margin rates for leveraged ETF strategies.
How often should I check my ETF portfolio? Once per quarter is sufficient for most investors. Rebalance once per year if any holding drifts more than 5 percentage points from its target allocation. Checking daily increases the temptation to trade, and trading — especially selling during downturns — is the most reliable way to reduce long-term returns. Set up automatic contributions and dividend reinvestment, then leave the portfolio alone.
Where to Start
If you are a long-term ETF investor seeking the best combination of features, Fidelity offers $0 commissions, fractional ETF shares from $1, automatic recurring ETF investments, and Zero index funds at 0.00%. If you prioritize the industry's lowest-cost ETF lineup, buy Vanguard ETFs — VTI, VXUS, BND — at any of the four brokers listed here. Read the index fund investing guide and the commission-free trading guide for deeper coverage of these topics.