We are seeking a highly skilled and experienced Group Tax Manager to take a key role within the group tax function, supporting the Head of Tax and CFO as required. This role is responsible for delivering accurate and timely tax compliance, reporting, and strategic input across multiple jurisdictions. The successful candidate will play a central part in preparing and reviewing tax disclosures, managing audits, liaising with overseas teams and professional advisors, and ensuring compliance with international tax regulations. While not leading the tax function, the Group Tax Manager will provide critical expertise and oversight, acting as key contributor to Head of Tax.**Key Responsibilities****Year-End & Quarterly Reporting** • Prepare and review year-end and quarterly tax reports and disclosures in line with IAS. • Liaise with overseas teams and auditors, reconcile provisions with returns, and provide summaries for senior management. • Drive process improvements for efficiency.**Tax Returns** • Oversee preparation and submission of corporate tax returns across jurisdictions. • Review and challenge external computations, maintain governance over outsourced compliance, and ensure timely filings.**Treasury & FX** • Advise on intercompany funding, WHT obligations, and FX exposures. • Monitor tax implications of loans and currency movements; support hedging and design tax-efficient treasury structures.**Transfer Pricing** • Maintain OECD-compliant policies, oversee Master File preparation, and manage advisors. • Ensure local documentation meets requirements and support audits. • Provide strategic input on pricing arrangements.**CIR Monitoring** • Ensure compliance with Corporate Interest Restriction (CIR) rules. • Monitor thresholds and advise leadership on financing impacts.**Regulatory Reporting** • Lead CbC and Pillar II reporting, embed governance frameworks, and monitor legislation. • Provide training and ensure readiness for EU disclosure rules.**HMRC & Governance** • Act as primary HMRC contact, manage SAO and CCO obligations, and maintain robust controls. • Coordinate responses to audits and build constructive relationships with authorities.**Budgeting & Forecasts** • Support preparation of budgets and forecasts, maintain tax estimates, and integrate tax into planning. • Provide input for refinancing and scenario planning.**Overseas Tax Audits** • Prepare documentation, provide technical support, and liaise with local teams during audits. • Ensure efficient processes and mitigate risks.**Tax Structures & Strategic Advisory** • Advise on tax structures, M&A, and restructuring projects. • Provide input on new business models, budgets, and strategic initiatives. • Handle ad hoc queries and support senior leadership.**Qualifications*** Professional tax/accounting qualification (e.g., ACA, ACCA, CTA, CPA).* Minimum 8–10 years of experience in corporate tax, ideally within a multinational environment.* Strong technical knowledge of international tax, transfer pricing, treasury, and FX.* Proven experience in CbC reporting, Pillar II implementation, and HMRC compliance highly desirable.* Experience supporting M&A and restructuring projects with board-level exposure.* Excellent leadership, communication, and stakeholder management skills.* Ability to work under pressure and manage multiple priorities in a fast-paced environment.Please upload your CV and Cover Letter to apply* Location Lyndhurst, United Kingdom* Discipline Finance* Type Full-time* Business INEOS Group* Posted 02 December 2025* Closing Date 11 January 2026