Tax Manager - European Customer Taxes London, United Kingdom

Interactive Brokers Group, Inc. (Nasdaq: IBKR) is a global financial services company headquartered in Greenwich, CT, USA, with offices in over 15 countries. We have been at the forefront of financial innovation for over four decades, known for our cutting‑edge technology and client commitment. IBKR affiliates provide global electronic brokerage services around the clock on stocks, options, futures, currencies, bonds, and funds to clients in over 200 countries and territories.

The Interactive Brokers Global Tax Team serves an important role in the success of our business. We mitigate risk and create value for our business and our customers. We partner with many functions across the company, including Technology, Business Development, Accounting, Treasury, Customer Service and Marketing, to assist our business in achieving our commitment of delivering value through technological innovation and providing our clients with unprecedented access to global markets at the lowest cost.

The Global Tax Team sets the tax policy for the company, and identifies, develops, implements, and manages tax strategies to help minimize our overall tax cost. We advise on the tax aspects of our product offerings to customers, manage tax audits, and ensure financial reporting and tax returns are filed timely and accurately.

We are seeking a highly skilled tax professional to join our Global Tax team with a focus on customer taxes in European markets. This role will report to the Director of UK & APAC Tax and work alongside other members of the Global Tax Team, particularly the U.S.-based information reporting & withholding tax team, to ensure comprehensive global coverage of customer tax obligations.

While the initial focus will be on designing and developing customer tax statements for European retail clients, this role requires robust experience and solid technical understanding of information reporting and withholding tax requirements across European countries. The ideal candidate will have strong technical tax knowledge of investment products, deep expertise in European tax filing obligations by retail customers, and knowledge of information reporting and withholding obligations by brokers, and the ability to translate complex tax requirements into operational processes and customer communications.

A successful candidate will be a collaborative team player who is entrepreneurial, detail-oriented, and an excellent communicator.

• Design, develop, and maintain customer tax statements for European retail clients covering a wide range of investment products including stocks, bonds, mutual funds, ETFs, futures, options, and other derivatives.
• Ensure tax statements comply with local tax reporting requirements and formats across multiple European jurisdictions.
• Review and validate tax calculations for accuracy, including capital gains/losses, dividend income, interest income, withholding taxes, and tax reclaim information.
• Partner with Technology teams to implement and enhance automated tax statement generation processes.
• Create customer-facing documentation and guidance materials explaining tax statement information and tax reporting obligations.
• Research and analyse new and existing product offerings and new venue launches to determine customer tax implications, information reporting requirements, and withholding tax obligations for European markets.
• Provide technical guidance on tax treatment and reporting obligations for various investment products and transaction types.
• Draft functional requirements for information reporting and withholding tax features to software development teams.
• Develop and maintain tax calculation methodologies for complex products and cross-border transactions.
• Monitor, research, and analyse new laws and changes to existing laws that impact customer information reporting, withholding tax, and tax statement requirements across European countries.
• Assess impact of legislative changes on IBKR’s processes and systems and communicate requirements to relevant stakeholders.
• Identify and design system improvements that automate processes related to customer tax documentation, information reporting, withholding tax, and tax statement generation.
• Develop and document standard operating procedures for information reporting, withholding tax operations, and tax statement preparation.
• Assist with research, development, and integration of new tax technologies, including tax data collection and automation.
• Contribute to special projects related to customer tax reporting, withholding, and technology enhancements.

• Minimum of 8-10 years of experience in tax with strong focus on tax treatment and impact to customers from investment activities, preferably in financial services, brokerage firms, asset management, Big 4 public accounting, or tax advisory.
• Bachelor’s degree in Accounting, Finance, Taxation, or related field; professional tax qualification (CTA, ADIT, or equivalent) strongly preferred.
• Robust technical knowledge and operational experience in European information reporting and withholding tax requirements.
• Strong technical knowledge of tax treatment for retail investors across various client tax profiles and various investment products.
• Solid understanding of capital gains taxation, dividend taxation, interest taxation, and withholding tax rules in European countries.
• Experience drafting functional requirements for tax technology systems.
• Excellent attention to detail with strong analytical and problem-solving skills.
• Proficiency in Excel and ability to work with large datasets.
• Strong written and verbal communication skills with ability to explain complex tax concepts clearly to both technical and non-technical audiences.
• Ability to work independently and manage multiple priorities in a fast-paced environment.
• Proven ability to collaborate effectively with technology teams and translate tax requirements into system specifications.

• In addition to English, fluency in a major European language such as German or French is a big plus.
• Advanced degree such as a law degree (J.D., LL.M.) or equivalent legal qualification or professional certifications such as CTA (Chartered Tax Adviser), ADIT (Advanced Diploma in International Taxation), ATT, or local equivalent.
• Experience with automated tax reporting and withholding systems and tax technology platforms.
• Direct experience in brokerage operations and investment product mechanics.
• Experience with tax reporting and withholding in multiple European countries (Germany, France, Netherlands, Italy, etc.).
• Knowledge of financial transaction taxes in European markets.
• Experience managing tax audits or penalty abatement processes.
• Detail-oriented with commitment to accuracy and compliance.
• Collaborative team player with ability to work across departments and geographies.
• Customer-focused mindset with service orientation.
• Adaptable and comfortable with changing priorities and regulatory landscapes.
• Process improvement and automation orientation.
• Strong project management capabilities.
• Entrepreneurial approach to problem-solving.
• Excellent consensus builder.

20 Fenchurch Street, London, EC3M 8AF

Career support and development. Salary commensurate with experience. Performance-based discretionary cash bonus scheme. Discretionary stock grant. Group Life Assurance cover. Group Income Protection. Occupation pension scheme based on Gross earnings. Above statutory annual leave, increasing with service. Daily company-paid lunch and healthy snack options throughout the day (when working from the office). Access to Private Medical Insurance, Dental Plan and/or Health Cash Plan (including dependants). Travel season ticket loans. Cycle to work scheme.

Interactive Brokers (U.K.) Limited values in promoting, monitoring, implementing best practices, policies and procedures and culture in adhering to and promoting the FCA Consumer Duty with the organisation.