The most powerful broker on earth — 90+ markets, institutional-grade margin rates, free US stocks
WhichBrokr Category Ratings
Interactive Brokers was founded in 1977 by Thomas Peterffy and went public on NASDAQ in 2007 (ticker: IBKR). It is widely regarded as the world's most capable retail broker, offering institutional-grade access to over 90 markets in 33 countries with 23 tradable currencies. With a market cap of over $70 billion, it is one of the largest and most financially stable brokers globally.
IBKR operates two main account tiers: IBKR Lite (commission-free US stocks and ETFs via payment for order flow) and IBKR Pro (Fixed pricing at $0.005/share or Tiered from $0.0005–$0.0035/share, with SmartRouting for superior execution). For investors who trade beyond US equities — options, futures, international stocks, bonds, forex — IBKR Pro's tiered pricing is typically the most competitive available anywhere.
The platform is not for everyone. The Trader Workstation (TWS) is enormously powerful but overwhelming for casual investors. Account opening is more rigorous than neo-brokers. Customer support, while improving, has historically been slower than competitors. But for serious investors with diversified portfolios, experienced option traders, or anyone accessing non-US markets, Interactive Brokers is genuinely unmatched.
A structured assessment across 5 pillars — regulation, tax/legal, costs, features and platform accessibility. Updated July 2026.
Interactive Brokers offers the most competitive fee structure for professional and active investors globally. IBKR Lite is free for US stocks; IBKR Pro's tiered pricing is unbeatable for high-volume traders. → Read our full IBKR Europe pricing architecture guide · → Read our full IBKR US pricing guide (Lite vs Pro, Fixed vs Tiered, cash yield & margin)
| Fee type | Interactive Brokers | Market Average |
|---|---|---|
| US stocks (IBKR Lite) | $0 | $0–$4.95 |
| US stocks (IBKR Pro) | $0.005/share (min $1) | $0.0035–$0.005 |
| Options (US) | $0.65/contract | $0.50–$1.00 |
| Futures (US) | $0.85/contract | $0.75–$2.25 |
| Margin rate (USD) | Pro: 5.13%–4.13% (4 tiers) · Lite: 6.13% | 8%–12% |
| Cash interest (USD) | Up to ~3.13% (Pro, $100k+ NAV) | 0–4% |
| FX conversion | ~0.002% markup | 0.25–1% |
IBKR Pro accounts under $100,000 in equity incur a $10/month minimum activity fee — waived if your commission total exceeds $10 in any month. IBKR Lite has no such requirement.
Interactive Brokers is one of the most financially robust and rigorously regulated brokers in the world, with 10+ regulatory relationships and NASDAQ listing.
| Primary Regulator | SEC + FINRA (US), FCA (UK), ASIC (AU), MAS (SG) |
| Listed Company | NASDAQ: IBKR — quarterly financial reporting |
| US client protection | $500,000 SIPC + $30M excess (Lloyd's) |
| UK client protection | £85,000 FSCS |
| Client equity capital | $15B+ regulatory capital (2026) |
| Operating since | 1977 (48 years) |
| Security incidents | No major security breaches reported |
| ISA / SIPP (UK) | ✅ ISA available via IBKR UK |
TWS is the most powerful retail trading platform available. It rewards the time investment to learn it — but it is not beginner-friendly.
| Trader Workstation (TWS) | ✅ Full desktop platform — Windows, macOS, Linux |
| Client Portal (web) | ✅ Simplified web interface |
| IBKR Mobile | ✅ iOS + Android — full trading capability |
| Paper trading / demo | ✅ Free — simulated $1M portfolio |
| Charting | ✅ Advanced — 100+ indicators, 30+ drawing tools |
| Algorithmic / API trading | ✅ Full API (REST, WebSocket, TWS API) — best in class |
| Options analytics | ✅ OptionTrader — professional-grade options platform |
| Customer support | ⚠ Live chat, phone, email — wait times can be long |
No broker offers a wider range of investable assets. From US fractional shares to Hong Kong futures, Interactive Brokers covers essentially every major market.
| US stocks / ETFs | All NYSE, NASDAQ, AMEX listed securities + fractional shares |
| International stocks | 130+ global exchanges across 33 countries |
| Options | US and global options — all major exchanges |
| Futures | Major equity, interest rate, currency, commodity futures |
| Bonds | Direct bond market access — government, corporate, muni |
| Forex | 23 currencies — institutional-grade FX |
| Mutual funds | 40,000+ no-load funds |
| Crypto | BTC, ETH and others (US clients, Paxos) |
IBKR Pro margin rates consistently beaten — active borrowers save thousands vs. other brokers
130+ exchanges across 33 countries — the only broker for many international assets in one account
IBKR Pro routing and SmartRouting praised by options traders for fill quality and price improvement
Full paper trading account with live data — widely rated the best demo environment available
Trader Workstation cited as intimidating — "takes weeks to figure out" is a common refrain from new users
Compliance process lengthy and document-heavy compared to Revolut or Trade Republic — often takes days
Long hold times and unhelpful initial replies for complex account or margin issues frustrate users
$10/month minimum on smaller IBKR Pro accounts stings occasional traders who don't generate that in commissions
ⓘ Percentages reflect share of mentions across 3,000+ Trustpilot reviews and Reddit r/interactivebrokers threads analysed in Aug 2026. This is user-reported sentiment, separate from our editorial findings above.
Interactive Brokers is the gold standard for professional and serious retail investors who need global market access, sophisticated tools and competitive pricing. If you trade options seriously, access international markets, or need the lowest margin rates available, nothing comes close to IBKR. The NASDAQ listing and 10+ regulatory relationships make it one of the most transparent and financially sound brokers you can use.
The caveats are real: the TWS platform requires commitment to learn, account opening takes longer than neo-brokers, and customer support can be frustratingly slow. IBKR is not the right choice for casual investors looking for a simple ETF savings platform — Trade Republic or DEGIRO serve that use case better.
Best for: Experienced investors, options and futures traders, international market investors, margin borrowers and anyone with a large or complex portfolio. Not ideal for: Beginners, casual buy-and-hold investors, or anyone who needs a simple mobile-first experience.
| Is Interactive Brokers safe? | Yes — IBKR is regulated by 10+ authorities including SEC, FCA and ASIC. Listed on NASDAQ. US clients protected by SIPC up to $500,000 plus $30M excess coverage. |
| What is the difference between IBKR Lite and IBKR Pro? | IBKR Lite: $0 commission on US stocks via PFOF, flat 6.13% margin, lower cash yield (BM−1.5%). IBKR Pro: Fixed $0.005/share or Tiered $0.0005–$0.0035/share with SmartRouting, margin from 5.13% scaling to 4.13%, and cash yield up to ~3.13% (BM−0.5%). Pro is better for active traders; Lite suits casual US stock investors. |
| Does Interactive Brokers offer a demo account? | Yes — free paper trading account with simulated $1M. Access to all real-time market data. |
| Can non-US residents open an IBKR account? | Yes — IBKR serves clients in 200+ countries via local regulated entities. UK, EU, AU, SG and many more. |
| What is IBKR's margin rate? | IBKR Pro USD: 5.13% (under $100k) → 4.63% ($100k–$1M) → 4.38% ($1M–$50M) → 4.13% ($50M+). IBKR Lite: flat 6.13%. Among the lowest margin rates available anywhere. |
| Does IBKR pay interest on cash? | IBKR Pro: up to ~3.13% on USD cash (Benchmark minus 0.5%). The first $10,000 earns 0%; effective rate scales with account NAV — ~1.25% at $50k, ~2.82% at $100k, ~3.10% at $1M+. IBKR Lite pays up to ~2.13% (BM−1.5%). |