Interactive Brokers UK Profit Jumps 150% to £34 Million as Client Count Tops 86,000

Interactive Brokers (U.K.) Limited posted pre-tax profit of £34 million for the year ended December 31, 2025, more than double the £13.6 million it reported a year earlier, with the FCA-regulated unit adding clients at a steady clip and pulling in higher commission and interest income, according to a filing lodged with Companies House.

After-tax profit came in at £26 million, up from £10.5 million. Turnover, which the company says is derived entirely from commissions on order execution and clearing Clearing Clearing is a general term that simply means many different things depending on the subject and related industry. Most commonly, this refers to the reciprocal exchange between banks of checks and drafts, and the settlement of the differences, or the total of claims settled at a clearinghouse. In finance and banking, the word clearing has different meanings depending on the more specific business model. Moving checks from the bank where they were deposited to the bank on which they were drawn. Th Clearing is a general term that simply means many different things depending on the subject and related industry. Most commonly, this refers to the reciprocal exchange between banks of checks and drafts, and the settlement of the differences, or the total of claims settled at a clearinghouse. In finance and banking, the word clearing has different meanings depending on the more specific business model. Moving checks from the bank where they were deposited to the bank on which they were drawn. Th Read this Term, increased to £46.2 million from £36 million.

The numbers cover only the UK subsidiary of Nasdaq-listed Interactive Brokers Group, which reports separately on a consolidated basis.

At the group level, the parent company closed the fourth quarter of 2025 with revenue of $1.64 billion and earnings per share of $0.65, beating analyst expectations.

Client Growth Slows From Prior Year but Stays in Double Digits

The company said it was the carrying broker for 86,798 clients at year-end, up 35% from 64,146 in 2024. That is a slower pace than the 142% jump recorded the year before, when client numbers more than doubled from a smaller base.

Net commissions, which the filing identifies as the company's sole revenue line, climbed in step with the higher account count.

The growth follows last year's filing, when the British arm reported a 142% jump in client accounts and a more modest 15% revenue increase.

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Administrative expenses rose to £67 million from £59.4 million, while other operating income reached £10.8 million. The operating line still showed a £9.96 million loss, though that was narrower than the £16.2 million operating loss recorded in 2024.

The company relies on finance income, primarily interest earned on client balances and margin lending, to drive profitability.

Finance income reached £147.6 million, with £51.5 million coming from bank deposits, £47.9 million from interest on client balances, and £48.2 million from intercompany balances.

Of the interest on client balances, £34.2 million came from margin lending. Finance costs rose marginally to £103.6 million.

UK Retail Broker Field Shows Wide Performance Gap

The London broker reported its results into a market where competitors operating different business models have posted varied results.

IG Group, the FTSE 100 retail trading platform, recorded record total revenue of £1.12 billion for calendar year 2025 on a comparable basis, with the firm launching a strategic review that could reshape its corporate structure.

CMC Markets, another London-listed peer, closed its fiscal 2025 with net operating income of £340.1 million and a 33% jump in pre-tax profit to £84.5 million.

IBKR UK’s client money Client Money Client money refers to the money or margin – which may be any currency in the form of cash, check, draft, or electronic transfer – that a firm receives or holds for a client. Money held by a firm in the form of a stakeholder, which is are not payable on demand or immediately due, also refers to client money. The definition of client money does not apply to money held by businesses that operate in its own name on behalf of a client. Although the client does have to be in agreement before this arr Client money refers to the money or margin – which may be any currency in the form of cash, check, draft, or electronic transfer – that a firm receives or holds for a client. Money held by a firm in the form of a stakeholder, which is are not payable on demand or immediately due, also refers to client money. The definition of client money does not apply to money held by businesses that operate in its own name on behalf of a client. Although the client does have to be in agreement before this arr Read this Term rose to £1.22 billion from £896.6 million, the filing showed. The broker has also expanded its product line into cryptocurrency trading through a Paxos partnership and more recently allowed transfers of existing crypto holdings into linked accounts.