Interactive Brokers Review UK 2026 (FCA)

Risk warning: CFDs are complex instruments and come with a high risk of losing money rapidly due to leverage. 57.9% of retail investor accounts lose money when trading CFDs with this provider. You should consider whether you understand how CFDs work and whether you can afford to take the high risk of losing your money.

Interactive Brokers scores 87/100 in our testing. This review is based on a live UK account, opened at the broker's FCA-authorised entity, funded in GBP and traded. The EUR/USD, GBP/USD and EUR/GBP spread figures shown are modal values recorded on that account across three trading days in July 2026.

Interactive Brokers is the UK choice for direct market access, very low share-dealing cost and a serious multi-asset platform. Interactive Brokers (U.K.) Limited is FCA-authorised, FRN 208159; its forex all-in pricing is genuinely tight, and it offers UK account wrappers, an ISA and a SIPP, that most CFD-first rivals do not. EUR/USD tested at 0.1 pips.

Experienced and multi-asset traders, share dealers and those wanting an ISA or SIPP get the most here. Beginners who want a simple app get an easier start from a broker built around one mobile-first platform, because TWS has the steepest learning curve in this set.

Interactive Brokers quick facts

Interactive Brokers (U.K.) Limited is the FCA-authorised entity, and the table below collects the figures a UK trader checks first.

Trading costs and fees

Cost is a core strength. IBKR’s forex pricing pairs a raw spread with a small commission, and its LSE and global share dealing is markedly cheaper than most CFD-first brokers. The spreads below are tested modal values, the most frequent spread David Levy recorded on a live UK account across three trading days in July 2026 rather than a broker “from” figure. What sits behind these numbers, protocol and evidence tier both, is documented separately.

Forex and share dealing costs

IBKR prices forex and shares on the same principle: a small percentage of what you trade rather than a flat per-lot fee. On the IBKR Pro account EUR/USD tested at 0.1 pips and GBP/USD at 0.3, which is level with the tightest raw accounts in this set.

The commission is where IBKR differs from everyone else here, and it is why this page quotes no all-in pounds figure. It is a tiered basis-points charge, about 0.20 basis points of trade value with a minimum of US$2.00 per order, rather than a per-lot fee. There is no honest way to convert that into a single per-lot number, because what you pay depends on order size: the US$2 minimum dominates a small order and the bps rate dominates a large one. IBKR also has no spread-only account.

Share dealing is the cheapest in the set. LSE dealing is 0.05% of trade value with a £1.00 minimum per order on tiered pricing, or £3.00 per order on fixed pricing (broker site, accessed 10 July 2026), so a £2,000 LSE order costs £1.00 tiered and £3.00 fixed. The lowest commission forex brokers UK guide covers how dealing costs compare across the field.

Other fees UK traders should check

IBKR’s fee schedule is deeper than most and rewards reading. Market data is the one that catches people out: some data sets are free and others carry a monthly subscription, which a MetaTrader trader will not expect. Funding is bank transfer only with no deposit fee on standard transfers, so there is no card route. Currency conversion applies when you buy an asset denominated in a currency you do not hold, which on a multi-currency account like this one is routine rather than rare.

Trading platform

Interactive Brokers runs a single proprietary platform suite rather than any third-party software, so there is no MT4, MT5, cTrader or TradingView. The suite is built on one account and one order-routing engine, with several ways to access it:

• Trader Workstation (TWS): the full professional terminal, and the steepest learning curve in the set
• IBKR Desktop: a newer, simpler desktop front end
• GlobalTrader and IBKR Mobile: the lighter mobile experience
• Client Portal: account management and browser-based trading
• API access: programmatic trading for automated strategies

Because these are modules of one proprietary stack rather than separate platforms, the depth of TWS is what sets IBKR apart for serious traders, and it is also the single biggest reason a beginner should look elsewhere.

Trust and safety

Interactive Brokers (U.K.) Limited is FCA-authorised, and its parent is the largest listed company in this set.

FCA regulation and global licences

Interactive Brokers (U.K.) Limited, company number 03958476, registered at 20 Fenchurch Street, Floor 12, London EC3M 3BY, is authorised and regulated by the FCA under FRN 208159 (FCA register, checked 15 July 2026). Its parent, Interactive Brokers Group, Inc., trades on Nasdaq under ticker IBKR, is an S&P 500 constituent, and reported $21.3bn of equity capital as of mid-2026. On execution model, IBKR routes forex orders against quotes from multiple interbank liquidity providers and sends share orders through its SmartRouting system, which searches exchanges and venues for the best available price at the time of the order.

Client money, FSCS and negative balance protection

Interactive Brokers (U.K.) Limited is backed by a Nasdaq-listed group, though which entity holds your assets is what decides whether FSCS or SIPC applies. Client money is held in segregated accounts under the FCA’s CASS rules, separate from the firm’s own funds. The entity question matters more here than anywhere else in this set. Eligible client money and custody assets held with Interactive Brokers (U.K.) Limited carry standard FSCS investment protection up to £85,000 per eligible person, covering shortfalls in client money and assets rather than trading losses. Assets routed through Interactive Brokers LLC, the US affiliate, carry SIPC protection instead and are covered by the UK FSCS only in limited circumstances, so confirm which entity holds a given position before relying on FSCS cover for it. Complaints escalate to the Financial Ombudsman Service, whose award limits are covered in the FCA regime explained.

History and ownership

Interactive Brokers dates to 1978 and is the oldest firm in this set. Its Nasdaq-listed parent publishes audited accounts and reported $21.3bn of equity capital as of mid-2026, which is a materially stronger public-disclosure position than any privately held rival here can offer.

Public reviews

Trustpilot rates Interactive Brokers 3.2 out of 5 from 5,398 reviews (Trustpilot profile, captured July 2026). That is at the low end of the FCA-regulated brokers we cover, where the range runs from 1.8 to 4.6, and it sits oddly against IBKR’s financial strength and dealing costs. The likeliest explanation is the platform: TWS is demanding, and a broker built for self-directed professionals collects complaints a simpler app does not. Read it as a brand-level signal rather than a UK verdict, since Trustpilot profiles cover the whole brand across every market. Scores also move, so treat the figure as a July 2026 snapshot.

Account types and minimum deposit

A single multi-asset account covers cash and margin trading, with UK tax wrappers layered on top.

Account options for UK clients

Minimum deposit

The minimum deposit at Interactive Brokers is £0. There is nothing to fund up front, which suits a trader who wants to explore TWS or paper trading before committing.

Stocks and Shares ISA and SIPP

The ISA and SIPP wrappers are rare among CFD-capable brokers and are a genuine reason to choose IBKR over a forex specialist. Both are securities accounts rather than CFD ones, so they sit outside CFD leverage rules and follow standard margin lending terms instead. Confirm current eligibility at sign-up, and confirm which entity holds the assets, because that decides whether FSCS or SIPC applies. Tax treatment depends on your individual circumstances and can change.

Funding and withdrawals

IBKR funds by bank transfer only, which is the trade-off for a multi-currency securities account.

Deposit methods (UK clients)

IBKR funds by bank transfer in GBP, with no deposit fee on standard transfers, and most funding methods are ready to trade within one business day (broker site, accessed 10 July 2026). There are no card deposits.

Multi-currency funding

IBKR holds balances in multiple currencies on one account, which is the point of its structure but also where costs hide. Buying a US share from a GBP balance means converting, and the conversion is a separate line rather than something baked into a spread. Traders who work several currencies benefit; a GBP-only forex trader will barely notice.

Withdrawals

Withdrawals return by bank transfer to an account in your own name, a standard anti-fraud control. Final settlement depends on the receiving bank.

Account opening

Opening is online, with identity and address verification under the FCA’s client-onboarding rules. IBKR’s application is longer than most in this set because it covers a securities account rather than a CFD one, and it asks about trading experience.

Product range

Market access is the widest in this set, with direct LSE access rather than CFD-only exposure. Each asset class gets its own treatment in our CFD trading hub for UK traders.

Crypto CFDs are banned for UK retail clients, so no crypto CFD product is available on the UK entity regardless of what IBKR offers elsewhere. The FCA banned the sale of crypto derivatives to UK retail consumers from 6 January 2021, and wider UK retail crypto access is limited. No crypto tier appears in the leverage list because the FCA caps do not include one.

Share CFDs and share dealing

Direct LSE access is the headline: IBKR deals real shares rather than only CFDs on them, at 0.05% with a £1 minimum. The equity list is deep, and our share CFD comparison compares commissions and platforms across the set.

Bond and treasury CFDs

IBKR trades government and corporate bonds directly rather than as CFDs, which is unusual here. For CFD-based bond exposure and how it compares, see our bond and treasury CFD brokers UK page.

Leverage for UK traders

Retail CFD leverage at IBKR follows the FCA’s standardised caps rather than anything the broker sets. These are FCA rules applying to every UK retail account, and how leverage caps work in practice explains the margin.

IBKR’s cash and margin securities accounts, including the ISA and SIPP, sit outside CFD leverage rules and follow standard margin lending terms instead.

Customer service

Support runs through a secure message centre in Client Portal, alongside phone and live chat, with coverage that follows global market hours across regional desks.

IBKR is built for self-directed traders: the documentation is deep, but hand-holding is limited, which fits its position as a broker that is not aimed at absolute beginners. Our formal three-contact support test for this broker is not yet complete, so support here is described from published information rather than scored from our own contact.

Research and education

Research and education are aimed at multi-asset investors rather than short-term forex traders. IBKR Campus and the Traders’ Academy provide free structured courses on products, platforms and markets, and the platforms carry fundamentals, analyst ratings and screeners inside TWS, with some data sets free and others tied to subscriptions. A free paper-trading account lets you test strategies without committing capital. We describe the offer from IBKR’s published material pending a live assessment.

How Interactive Brokers compares to alternatives

For MetaTrader-based forex trading, Pepperstone fits better. For a broad CFD range on a proprietary platform, IG Markets is the closer rival. On share-dealing cost and market range, IBKR leads outright.

Pepperstone carries the MetaTrader and cTrader stack that IBKR refuses to support, and IG runs a broad CFD range on a friendlier platform. The full UK broker list ranks everything we cover.

Should you open an account with Interactive Brokers?

Yes, for experienced multi-asset traders who want the cheapest LSE share dealing in the set, tight forex all-in cost, and ISA plus SIPP wrappers. A £2,000 LSE order costs £1.00 on tiered pricing, EUR/USD tested at 0.1 pips, there is no minimum to open, and the Nasdaq-listed parent publishes audited accounts under FCA authorisation FRN 208159.

Not for beginners and MetaTrader loyalists. TWS has the steepest learning curve here and no third-party platform is supported. Check which entity holds your assets too, because that decides whether FSCS or SIPC applies.

A demo is the low-cost way to test the platform, and how to use a paper account covers doing it properly. If that fits how you trade, open an Interactive Brokers demo account to try the platform before funding a live one (affiliate link, see our advertiser disclosure).