Broker Comparison: US
Broker Comparison: US
The US has the most competitive and mature brokerage market in the world. For long-term passive investors, Fidelity, Schwab, and Vanguard are the safe defaults. For cost-obsessed or sophisticated investors, Interactive Brokers offers lower fees and more control at the cost of a steeper learning curve.
Key takeaways
- Fidelity and Schwab are the broadest platforms: zero-commission trading, full ETF ecosystem, strong phone support, vast research tools
- Vanguard is a cooperatively owned firm with lower fees and simpler platform, but fewer research features and narrower fund access
- Interactive Brokers offers the lowest trading costs and smallest bid-ask spreads globally, but charges monthly inactivity fees and has a notoriously steep learning curve
- All four are regulated by the SEC, covered by SIPC, and have billions in customer assets; catastrophic failure is not a realistic risk
- The choice comes down to fees, features (especially research tools), and your comfort with platform complexity
Fidelity: The broadest platform
Fidelity is the largest US brokerage by assets under administration (over $10 trillion as of 2024). Its retail brokerage arm serves roughly 40 million customers. For a first-time investor or someone building a diversified portfolio, Fidelity is often the default.
Strengths:
- Zero-commission trading on stocks, ETFs, and mutual funds. No account minimums.
- Enormous fund universe: access to thousands of mutual funds, ETFs, bonds, and options. You're not limited to Fidelity's own products.
- Excellent research tools. Morningstar data, stock screeners, and fundamental analysis are built in.
- Strong customer support. Phone support is available 8 am to 10 pm ET weekdays, 9 am to 7 pm weekends. Agents are well-trained and usually solve issues on the first call.
- Multiple account types: brokerage, IRA, HSA, 529, custodial accounts for minors.
- Fractional shares on stocks and ETFs, so you can invest small amounts without worrying about share price.
- No inactivity fees or account maintenance charges on standard accounts.
Trade-offs:
- The platform is feature-rich but cluttered. A first-time user might be overwhelmed by options for order types, research tools, and portfolio analysis features.
- Currency conversion spreads are decent (roughly 0.5–1%) but not the tightest in the industry. If you're frequently buying international ETFs like VXUS, the spread matters.
- Advisory fees for Fidelity's robo-advisor (betterment-like service) are 0.35%, which is competitive but not the cheapest.
Ideal for: First-time investors, people who value broad fund access and research tools over minimal costs, and anyone who might need phone support or multiple account types.
Cost on a model portfolio (as of 2024): Zero transaction costs. Currency conversion on VXUS purchases: roughly $50–100 per $10,000 invested. Total annual cost of ownership for a simple 3-fund portfolio: under 0.10%.
Schwab: The everyman broker
Schwab (Charles Schwab Corporation, public, SCHW) is the second-largest US brokerage and often positioned as the "people's broker." It merged with TD Ameritrade in 2020, absorbing TD's customer base and platform features.
Strengths:
- Zero-commission trading across stocks, ETFs, mutual funds, and options.
- Strong platform and research tools (inherited from TD Ameritrade).
- Excellent mobile app and web platform. The UX is polished and intuitive.
- Phone support: 7 am to 9 pm ET weekdays, 8 am to 6 pm PT weekends. Support quality is high.
- Low account minimums (no minimum for most accounts; $30,000 for advisory services).
- No inactivity fees or hidden charges on standard accounts.
- Access to fractional shares and options.
Trade-offs:
- Currency conversion spreads are similar to Fidelity (0.5–1%). Not a major differentiator.
- Fund universe is large but smaller than Fidelity's. Some niche fund families are not available.
- The platform absorbed TD Ameritrade's features, which means some redundancy and occasional legacy quirks.
Ideal for: Investors who want a polished, modern platform without the feature overload of Fidelity. Also good if you trade options or want a strong mobile experience.
Cost on a model portfolio (as of 2024): Zero transaction costs. Currency conversion on VXUS: similar to Fidelity. Total annual cost of ownership for a simple 3-fund portfolio: under 0.10%.
Vanguard: The low-cost alternative
Vanguard (Vanguard Group Inc., private, cooperatively owned) is unique: it's owned by its clients. There are no external shareholders demanding profit maximization. This structure yields lower fees across the board.
Strengths:
- Lowest expense ratios on Vanguard's own mutual funds and ETFs. The Vanguard Total Stock Market Index Fund (VTSAX) costs 0.04% annually; competitors are 0.03% or less, but Vanguard is still in the pack.
- Zero-commission trading on stocks, ETFs, and mutual funds.
- No inactivity fees or account maintenance charges.
- Strong custody. Vanguard is regulated and transparent about how it segregates customer assets.
- Simplicity. The platform doesn't bombard you with research tools or trading features. It's stripped-down but functional.
- Phone support is available, though hours are 8 am to 10 pm ET weekdays only.
Trade-offs:
- Platform is simpler, which some view as a strength and others as a limitation. Serious traders or people who want advanced charting miss these features.
- Research tools are limited. You get fund fact sheets and Morningstar ratings, but not the deep analytical tools Fidelity offers.
- Fund universe is narrower. Vanguard offers Vanguard funds and a curated list of non-Vanguard offerings, but not the full universe Fidelity does. If you want to buy a specific iShares or Schwab ETF, you might not find it.
- Fractional shares were added in 2022 but only for Vanguard's own funds, not other fund families.
- Currency conversion spreads are similar to Fidelity and Schwab.
Ideal for: Cost-conscious investors who are comfortable with simplicity. People who plan to buy and hold a diversified portfolio and won't need to research esoteric funds or trade complex instruments.
Cost on a model portfolio (as of 2024): Zero transaction costs. Currency conversion on international ETFs: similar to others. Total annual cost of ownership for a simple 3-fund portfolio of Vanguard funds: under 0.10% (and often lower, since Vanguard's own funds are extremely cheap).
Interactive Brokers: The power-user choice
Interactive Brokers (Ibkr, public, IBKR) is a global broker designed for active traders, options traders, and investors who trade frequently across multiple asset classes (stocks, options, futures, forex, bonds). It's not for everyone, but for certain use cases, it's unbeatable.
Strengths:
- Lowest trading costs in the world. Commission on equities is $0 per trade on most markets. Commission on options is $0.35–$0.65 per contract (vs. $0–$5 at other brokers). Currency conversion spreads are 0.1–0.3%, far tighter than Fidelity or Schwab.
- Widest asset access. You can trade stocks, ETFs, options, futures, forex, bonds, cryptocurrencies, and more across 200+ markets worldwide.
- Advanced trading tools. API access, algorithmic order types, options chains, margin lending at competitive rates.
- Favorable pricing on forex and international trades, making it ideal for investors buying VXUS or international ETFs.
- Tier-based pricing: if your account has under $100,000, you pay a $10/month inactivity fee if you don't trade. If it's over $100,000 or you trade, there's no fee.
Trade-offs:
- Platform is notoriously complex. The Trader Workstation (TWS) client looks like something from 2005. Web-based alternative (Client Portal) is simpler but less powerful.
- Steep learning curve. Account setup, funding, and first trades require patience and attention to detail.
- Customer support is responsive (email within hours, live chat 24/5) but assumes you know what you're doing. Agents won't hold your hand.
- Minimum account balance is $1,000 for most account types, $2,000 for a margin account.
- No access to Fidelity's or Schwab's research tools. You're expected to find data yourself or use third-party tools.
- The $10/month inactivity fee is a gotcha for small account holders. On a $20,000 account, that's 0.6% annually, defeating the purpose of low commissions.
Ideal for: Cost-obsessed investors, options traders, investors who frequently buy international ETFs, and people comfortable with terminal-like interfaces and self-directed research. Not ideal for people who need hand-holding or who trade infrequently.
Cost on a model portfolio (as of 2024): Zero commissions. Currency conversion on VXUS: $10–20 per $10,000 invested (vs. $50–100 at Fidelity). Inactivity fee: $0 if balance > $100,000; $120/year if under. Total annual cost of ownership for a $500,000+ portfolio: roughly 0.02–0.05%. For a $50,000 portfolio: 0.24–0.38% (due to inactivity fees).
Secondary and niche brokers
E*TRADE (now part of Morgan Stanley): Similar to Fidelity in breadth; slightly higher inactivity fees for very small accounts. Adequate but not exceptional.
Tastytrade: Specializes in options trading; superior education and tools for options. Commissions and spreads are competitive. Not a good choice for passive investors.
Ally Bank: All-in-one brokerage and checking account; zero-commission trading. Good for people who want one integrated platform. Lower research tools than Fidelity.
M1 Finance: Robo-advisor and self-directed brokerage hybrid. Excellent for buy-and-hold investors who want automated rebalancing without paying advisory fees. Pie-based portfolio construction is intuitive.
For a passive, long-term investor building a three-fund or four-fund portfolio, Fidelity, Schwab, or Vanguard cover 99% of needs. The choice is personal preference: Fidelity for breadth and research, Schwab for platform polish, Vanguard for lowest cost. Interactive Brokers is worthwhile only if you're trading international assets frequently or have high balances.
Comparison matrix: US brokers
Next
US brokers dominate in cost and technology, but they're US-focused. The next article compares UK and European brokers, where the landscape is different and choices more constrained.