Interactive Brokers (U.K.) Limited returned to substantial profitability in the year ended 31 December 2025, with profit after tax nearly tripling compared to the prior year as commission revenue climbed and finance income expanded sharply.
- Revenue (Commissions): £46.2 million (up 28% year-over-year from £36.0 million)
- Operating Loss: £9.96 million (improved from loss of £16.2 million in 2024)
- Profit Before Tax: £34.0 million (up 150% from £13.6 million)
- Net Profit After Tax: £26.0 million (up 148% from £10.5 million)
- Finance Income: £147.6 million (up 12% from £131.9 million)
- Client Money Held: £1.216 billion (up from £896.6 million)
- Carried Client Accounts: 86,798 (up 35% from 64,146)
- Average Headcount: 170 employees (up from 154)
- Capital Contribution: £40.0 million injected during the year
The UK subsidiary of the US-based Interactive Brokers Group benefited from a 35% surge in carried client accounts to 86,798 and elevated client deposit balances, which drove a £15.7 million increase in finance income. Administrative expenses rose to £67.0 million from £59.4 million, reflecting headcount expansion in compliance and customer service roles as the firm scaled operations.
The company remains dependent on operational support from its parent, Interactive Brokers Group, though directors confirmed adequate resources to continue operations for at least 12 months. Parent company IB Exchange Corp injected £40 million in fresh capital during the period, bringing total shareholder equity to £286.7 million from £221.1 million at end-2024. No dividend was proposed.
Regulatory capital requirements under FCA rules were met throughout the financial year, the filing confirms.
