Interactive Brokers Review 2026: Honest Take for European Investors

The short version

Who this review is for

I'm writing this for European investors who've heard that Interactive Brokers is "the cheapest broker for serious investors" and want to know whether that's true, whether the intimidating UI is a real barrier, and where IBKR actually fits in a European broker setup. I've used IBKR for over four years specifically for US-stock trading and multi-currency portfolio management, alongside DEGIRO for European ETFs and Trade Republic for monthly savings plans.

I'll assume you already understand basic brokerage mechanics. The question I'm answering is: should you open an IBKR account, and if so, how should you use it given that there are easier brokers (DEGIRO, Trade Republic, eToro) for most everyday European investing tasks?

Three groups should keep reading. First, anyone trading US stocks, ADRs, or multi-currency assets where FX cost matters — IBKR is genuinely the right choice and I'll explain why. Second, anyone who's been put off by the UI reputation and wondering if it's still as bad in 2026 (mostly yes, but the alternatives are usable). Third, anyone choosing between IBKR and DEGIRO/Trade Republic for general-purpose European investing — the answer there is usually "you want both eventually" rather than picking one.

What Interactive Brokers is in 2026

Interactive Brokers Group, Inc. (NASDAQ: IBKR) is the largest US-headquartered online broker by trading volume, founded by Thomas Peterffy in 1978 and headquartered in Greenwich, Connecticut. The company has grown organically over four decades — Peterffy still owns a majority of the equity — and operates as a publicly traded firm with full SEC and FINRA reporting transparency.

For European clients, the relevant entity is Interactive Brokers Ireland Ltd, headquartered in Dublin, regulated by the Central Bank of Ireland (CBI), with EU-wide passporting under MiFID II. UK clients are served by Interactive Brokers (UK) Ltd, FCA-regulated. Australian, Japanese, and other regional clients are similarly served through local entities.

By the numbers in 2026: roughly 3.0+ million customer accounts globally (about 600,000+ European), $400+ billion in client equity, and access to 150+ markets in 33+ countries. The company has been continuously profitable since the early 2000s, has never had a major regulatory or solvency incident, and maintains balance-sheet capital well above regulatory requirements.

The product lineup is uniquely broad. From a single IBKR account a European investor can trade: stocks (US, European, Asian, emerging markets), ETFs (5,000+), options on most major exchanges, futures, currencies (forex), bonds (corporate, government, municipal), mutual funds (3,500+), and CFDs in some jurisdictions. Multi-currency support is native — your account can hold balances in EUR, USD, GBP, CHF, CAD, AUD, JPY, and 15+ other currencies simultaneously, with conversion at the lowest spreads in the broker industry.

What's structurally different from European discount brokers like DEGIRO: IBKR is a full-service broker with institutional-grade infrastructure, not a streamlined retail-only platform. This shows up in pricing (genuinely lower), product breadth (genuinely wider), reporting (more complete), and UI (significantly less polished for casual users).

How Interactive Brokers actually works

The platform is genuinely more complex than DEGIRO or Trade Republic, so this section is longer than usual.

When you fund your IBKR Ireland account, your money lands in a multi-currency cash account at Interactive Brokers Ireland Ltd. Cash balances are held in segregated client accounts at tier-1 European banks (segregation is at IBKR's institutional level, not at individual client level — but customer assets are protected by Irish investor protection schemes plus IBKR's own balance-sheet capital).

You can fund in any of 20+ supported currencies. EUR deposits land as EUR balance; USD deposits as USD balance; both can sit in the account simultaneously without forced conversion. This is the structural feature that drives IBKR's FX advantage.

When you trade, the order is routed through IBKR's smart-order-routing system, which accesses 150+ exchanges and ECNs to find the best execution price. For US stocks specifically, this typically means accessing dozens of liquidity venues simultaneously — something neither DEGIRO nor Trade Republic offer.

Three pricing models that matter:

• IBKR Lite — commission-free trading on US stocks and ETFs, with the broker earning revenue from payment-for-order-flow (PFOF) on those trades. Available to US clients and some EU clients in 2024+.
• IBKR Pro — flat per-trade commission ($0.005 per US share with $1 minimum, around €1.25 per European stock trade). No PFOF. Default for most European-resident accounts.
• Tiered — volume-discounted commissions for high-volume traders, starting at ~$0.0035 per share at low volumes and decreasing with size.

For most European retail investors with monthly buy-and-hold, IBKR Pro is the right choice despite the per-trade commission, because the lack of PFOF means better execution prices that typically outweigh the $1-1.25 commission on €1,000+ trades.

Margin and shorting are available on Pro but disabled by default for new accounts — you opt in if you need them. Most retail investors don't.

Fees, in plain numbers

This is where IBKR earns its reputation, especially for cost-sensitive European investors.

Stock trades (IBKR Pro):

• US stocks: $0.005 per share with $1 minimum, $0.005 per share max. A 100-share trade costs $1.00; a 1,000-share trade costs $5.00; a 10,000-share trade costs $50. Fixed-rate pricing, no per-trade fee.
• European stocks: typically €1.25 minimum per trade, scaling up modestly with size. Most retail trades pay the minimum.
• ETFs: same structure as stocks — IBKR doesn't have a "free ETF list" the way DEGIRO does, but the all-in cost per trade is comparable for typical retail sizes.

FX (currency conversion): 0.2 basis points spread on the interbank rate, with a $2 minimum per conversion. This is roughly 125× cheaper than DEGIRO (25 bps) and 250× cheaper than eToro (50 bps). On a €10,000 USD conversion, that's about $0.20 vs DEGIRO's $25 vs eToro's $50.

Withdrawal fees: first SEPA EUR withdrawal each month is free, additional withdrawals are $1. USD withdrawals (US bank wire) are $10. SEPA inbound deposits are free.

Inactivity fee: $10 per month for accounts under $100K with fewer than $10 in monthly commissions. Eliminated in 2021 for most US clients but the residual EU rule still applies. This is the single most-cited annoyance about IBKR for retail investors. Practical mitigation: trade at least once or twice a month (even a small €100 trade pays €1.25 in commission, which counts toward the $10 minimum), or maintain a balance over $100K.

Real-world example: a European investor holding €50,000 across US stocks and European ETFs, executing one buy-and-hold trade per month. On IBKR Pro: ~$1-2 per trade plus negligible FX cost on USD conversions. Annual all-in cost: maybe $25-50 including any FX. Compare to DEGIRO: similar trade-cost ($2-3) but FX adds up if you trade USD-denominated assets — could be $100-200/year just on FX for active multi-currency traders.

Where DEGIRO beats IBKR: pure EUR ETF buy-and-hold without FX needs. DEGIRO's Core Selection list (free trades on ~200 ETFs) beats IBKR's $1.25 per-trade for that specific use case.

IBKR Lite vs IBKR Pro vs Tiered

The pricing-tier choice matters more than most reviews suggest, especially for the European-resident reader.

IBKR Lite — commission-free trading on US stocks and ETFs. Available to US clients since 2019, expanded to some EU clients during 2024. The catch is that IBKR Lite uses payment-for-order-flow (PFOF) — your orders are routed to wholesalers like Citadel Securities, who pay IBKR a small per-share fee for the order flow and execute against their own inventory. In practice this means slightly worse execution prices on average vs IBKR Pro's smart-order-routing. For monthly buy-and-hold of broad-index ETFs, the execution-quality difference is small (a few basis points per trade); for active trading of small-cap or thinly-traded stocks, it matters more.

IBKR Pro (Fixed-rate) — flat per-share commission with $1 minimum on US stocks. No PFOF; orders routed via IBKR's smart-order-routing system to whichever venue has the best price. This is the default and right choice for most European retail investors. The $1 commission on a €1,000 trade is 0.1% — comparable to or cheaper than DEGIRO's commission, and the better execution typically saves more than the commission costs.

IBKR Pro (Tiered) — volume-discounted commissions for high-volume traders. Starts at $0.0035 per share at low volumes, decreases to $0.0005 at very high monthly volume. Combined with exchange-fee passing-through and rebates for adding liquidity. Right choice for active traders doing 100+ trades per month; wrong choice for monthly buy-and-hold investors who'll never hit the rebate tiers.

My personal setup: IBKR Pro Fixed-rate. Commission cost is small, FX cost is microscopic, execution quality matters more than the $1-2 per trade. Tiered would only pay off if I were trading 50+ times per month, which I'm not.

The FX advantage, in plain numbers

This deserves its own section because it's the single biggest reason European investors should consider IBKR.

The competitive comparison, in basis points spread on EUR↔USD conversion:

• IBKR Pro: ~0.2 basis points
• DEGIRO: ~25 basis points (125× more)
• Trade Republic: ~25 basis points
• eToro: ~50 basis points (250× more)
• Most traditional banks: 100-200 basis points (500-1000× more)

On a single €10,000 EUR→USD conversion:

• IBKR Pro: ~$0.20
• DEGIRO: ~$25
• eToro: ~$50

On a typical European investor's lifecycle of buying $50K of US stocks over 5 years:

• IBKR Pro: ~$10-20 in cumulative FX costs
• DEGIRO: ~$1,250 in cumulative FX costs

Why the spread is so much lower: IBKR is a market-maker in foreign exchange, executing FX trades on the IDEALPRO interbank platform alongside the major banks. The spread you pay is essentially the bid-ask in the wholesale FX market. DEGIRO and other discount brokers route FX through one or two market-maker partners and earn a spread on top.

Practical implication: if your investing strategy involves any non-EUR-denominated assets — US stocks, GBP-listed dividend champions, USD-quoted ETFs, anything — IBKR's FX advantage compounds enormously over a multi-year horizon. The difference between paying $25 per FX conversion and $0.20 per FX conversion is the difference between FX being a meaningful cost and being functionally free.

If your strategy is 100% EUR-denominated European ETFs and stocks, this advantage doesn't matter and DEGIRO's Core Selection wins on cost. The split is that clean.

Is Interactive Brokers safe?

Among the safest brokers in the world, structurally and operationally.

Regulation: IBKR Ireland Ltd is regulated by the Central Bank of Ireland (CBI) under MiFID II. UK entity is FCA-regulated. US entity is SEC and FINRA regulated. Multi-jurisdiction oversight means the same internal controls have to satisfy multiple regulators.

Capital strength: Interactive Brokers Group, Inc. has shareholders' equity in excess of $13 billion as of 2025, far above regulatory capital requirements. As a public company (NASDAQ: IBKR), the financials are audited quarterly and publicly disclosed.

Investor protection:

• For European clients via IBKR Ireland Ltd: €20,000 base coverage under the Irish Investor Compensation Scheme (ICS), supplemented by IBKR's own corporate guarantee structure that effectively brings protection up to €100,000+ for most accounts.
• For UK clients: £85,000 FSCS protection via IBKR (UK) Ltd.
• For US clients: SIPC protection up to $500,000 (including $250,000 cash). Plus $30 million additional excess insurance through Lloyd's of London. Plus $30 million per customer additional protection. Total: $30+ million per customer protection.

Track record: IBKR has operated continuously since 1978 with no major solvency incident, no major regulatory enforcement action, no major hack or breach. The company performed normally through 2008 (some institutional clients had losses; IBKR itself was unaffected), 2020 COVID volatility, and the 2022 rate-hike volatility.

The "why can't I withdraw" PAA question: this comes up in IBKR's Trustpilot reviews and is worth addressing. The most common cause is the margin-protection mechanism: IBKR holds back a margin buffer on accounts that have any positions financed on margin, leveraged options, or short positions. The "available to withdraw" amount can be lower than the displayed balance if you have any such positions. For pure cash accounts with simple long positions, withdrawal is straightforward. The Trustpilot complaints typically come from leveraged traders who don't fully understand how margin requirements interact with withdrawal availability — frustrating but not a structural broker problem.

Withdrawals, FX, and taxes

Withdrawals: first SEPA EUR withdrawal each month is free, additional withdrawals $1. USD bank wires $10. Withdrawal processing time is typically 1-2 business days plus standard SEPA/wire timing.

FX: 0.2 bps spread, $2 minimum per conversion. As covered above, the cheapest FX in the broker industry by a wide margin.

Tax reporting: IBKR Ireland provides a comprehensive year-end tax statement covering all activity. The statement is genuinely good — better than DEGIRO's and substantially better than eToro's — but doesn't pre-fill any specific country's tax forms. You receive a multi-page PDF with all dividends, capital gains, FX gains/losses, interest, and withholding broken out clearly.

For German residents, the Steuerbescheinigung-equivalent quality is high but does not auto-handle Abgeltungsteuer. You declare manually in Anlage KAP — most German residents have an accountant or tax software handle this from the IBKR statement.

For French, Spanish, Italian, and Dutch residents, similar manual handling required. The breakdown quality is high enough that a competent accountant can complete the local form quickly from the IBKR statement.

Withholding tax on dividends: this is where IBKR's multi-jurisdiction structure shines — automatic application of treaty withholding rates (typically 15% on US dividends for European treaty residents, vs the default 30%) without you needing to file any forms.

Interactive Brokers vs DEGIRO vs Trade Republic

The three brokers that cover almost all of European retail investing needs, with very different sweet spots:

• Interactive Brokers — best for: multi-currency portfolios, US-stock trading, lowest FX costs in the industry, broadest product range, institutional-grade safety. Worst for: UI complexity, customer-service warmth, the inactivity-fee structure for low-balance EU accounts.
• DEGIRO — best for: pure EUR ETF buy-and-hold via the free Core Selection list, simpler UI, better tax-statement integration in some EU countries. Worst for: 25 bps FX cost on non-EUR conversions, no fractional shares, no automatic savings plans. Read my DEGIRO review.
• Trade Republic — best for: monthly savings-plan automation, 3.5% interest on uninvested cash, best app UX, automatic German tax handling. Worst for: single-exchange execution, narrower product range. Read my Trade Republic review.

The three-broker setup that most serious European investors should consider:

• DEGIRO for EUR ETF buy-and-hold (free Core Selection trades)
• Trade Republic for monthly automated savings plans + cash interest
• IBKR for US-stock, multi-currency, and any complex/specialized product needs

This is the setup I personally use. The duplication seems wasteful at first; the cost savings over a 5-10 year investing horizon make it pay off easily, and each broker plays to its specific strength rather than being a forced compromise.

If you can only have one broker, the answer depends on your strategy:

• 100% EUR European-listed ETFs → DEGIRO
• Monthly automated savings plans → Trade Republic
• US stocks or multi-currency → IBKR
• Mixed strategy with significant US exposure → IBKR (the FX advantage outweighs other considerations)

Country-specific notes

• EU residents (most countries) — onboard through IBKR Ireland Ltd, CBI-regulated. Multi-currency native accounts. Year-end tax statement is comprehensive but doesn't pre-fill local tax forms.
• Germany — full IBKR access via IBKR Ireland Ltd. No automatic Abgeltungsteuer withholding; declare in Anlage KAP. Most German residents have an accountant or tax software handle from the IBKR statement.
• France, Spain, Italy, Netherlands, Belgium, Austria, Ireland — operates under EU passporting. Manual local tax handling.
• United Kingdom — IBKR (UK) Ltd, FCA-regulated, £85K FSCS protection. UK residents can use ISA wrappers via the IBKR ISA product, which is competitive but has fewer integrations than dedicated UK brokers like Hargreaves Lansdown. Verify current ISA product status before opening.
• Switzerland — separate IBKR Switzerland AG entity, FINMA-regulated. Different fee schedule and different tax handling — verify directly.

Pros and cons

FAQ

Verdict

After 4+ years using Interactive Brokers as the multi-currency arm of my European investing setup, my honest take is that IBKR is genuinely the best broker in the world for what it does — and not the right primary broker for most casual European investors. The FX advantage compounds enormously over a multi-year horizon for anyone with non-EUR exposure; the product breadth and execution quality are unmatched in retail. But the UI is intimidating, the inactivity fee structure penalizes low-balance occasional traders, and customer support is documentation-heavy rather than warm.

What's changed since I opened my account in 2021 isn't IBKR — it's the European broker landscape around it. Trade Republic now offers monthly savings-plan automation that IBKR doesn't replicate. DEGIRO's Core Selection still wins on pure EUR ETF cost. Both have made IBKR less obviously "the only broker you need" for a typical European retail investor and more "the right broker for the multi-currency / US-exposure piece of your portfolio."

If you're starting from zero, I wouldn't open IBKR first — DEGIRO or Trade Republic are easier entry points. If you've been investing for a year or two and are starting to want US exposure, multi-currency capability, or product variety beyond what your current broker offers, IBKR earns its slot. The €100K-balance threshold to escape the inactivity fee is realistic to plan for over a 3-5 year horizon for most serious investors.

The three-broker setup (DEGIRO + Trade Republic + IBKR) is what I'd recommend for any European investor with €50K+ in long-term assets. The duplication seems wasteful at first; the cost savings over a 10-year horizon make each account earn its keep through specialization rather than forced compromise.