Corporate Tax Manager

Mayfair, London | A.C.T. Group

Join a client-focused advisory group at the heart of Mayfair.

A.C.T. is a private, client-centric group of companies delivering wealth structuring and advisory services to a sophisticated and international client base. Based in Mayfair, London, we work closely with clients to provide tailored, commercially minded solutions in an evolving global environment.

We are seeking an experienced and commercially aware Corporate Tax Manager to join our growing team. This is an exciting opportunity for a technically strong and proactive tax professional who enjoys working across both compliance and advisory, while collaborating directly with the wider leadership team.

For further information about A.C.T., please visit www.act.london.

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About the Opportunity

This role is ideal for a well-rounded tax professional with a strong grounding in UK corporate tax, a practical mindset, and the confidence to engage with a diverse portfolio of clients ranging from entrepreneurial businesses to multinational organisations.

You will act as a trusted advisor on corporate tax matters, oversee client compliance obligations, contribute to planning and advisory work, and play a meaningful part in the continued growth of both the tax function and the wider business.

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Key Responsibilities

Corporate Tax Compliance & Client Advisory

• Serve as a key point of contact for corporate tax matters across a varied portfolio of clients.

• Guide clients on their corporate tax obligations and manage the preparation and filing of their corporate tax affairs from a compliance perspective.

• Prepare and review Corporation Tax Returns for a broad range of businesses, including privately owned companies, entrepreneurial ventures, and multinational groups.

• Provide technical support on corporate tax compliance and related client matters as needed.

Advisory & Technical Projects

• Support the wider tax team on corporate tax planning and broader advisory assignments.

• Prepare proposals and written advice on topics including:

• Multi-jurisdictional tax compliance

• Cross-border transactions

• UK inbound and outbound investment

• International tax matters

• UK tax due diligence

• Permanent establishments

• CFC rules

• Tax residence

• Mergers and acquisitions

• Corporate structuring

Client Relationship Management

• Build and maintain strong client relationships through regular communication and responsive service.

• Anticipate client needs and respond promptly to requests while keeping clients informed of progress at every stage.

• Liaise confidently with HMRC, banks, clients, and other professional advisors.

• Work closely with the Leadership Team to ensure exceptional service delivery and strategic client support.

Business Development & Growth

• Play an active role in business development within the existing client portfolio.

• Identify new opportunities for additional work across your own area and other departments.

• Contribute to pitches, bids, and proposals for new business opportunities.

• Support the ongoing growth of the corporate tax team and the wider A.C.T. business.

Operational & Commercial Management

• Monitor assignments to ensure work is delivered within agreed budgets.

• Communicate clearly with relevant parties where budget overruns arise.

• Manage WIP and the billing process effectively and proactively.

• Ensure quality control procedures are followed in line with firm standards.

• Identify technical issues and risk areas, exercising sound judgement within agreed parameters.

• Escalate potential trouble spots to the Leadership Team at the appropriate time.

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What We’re Looking For

Experience & Qualifications

• Minimum 7 years’ experience within a UK tax advisory and compliance environment.

• ACA or ACCA qualified.

• CTA qualification advantageous, though we are open to exceptional candidates with relevant tax experience and an appropriate foreign tax qualification.

• Strong background as a Corporate Tax specialist with exposure to both compliance and advisory work.

• Experience gained within a Top 10 network firm.

• Sound technical knowledge of UK corporate and income taxation.

Technical Skills

• Strong command of:

• Microsoft Office Suite

• IRIS

• Sage

• FreeAgent

• Xero

• OneSource

• Caseware

• SAP

• Ability to manage multiple deadlines while maintaining a high level of accuracy and attention to detail.

Language Skills

• Fluency in at least one major European language is highly desirable, including:

• Spanish

• Italian

• French

• German

• Portuguese

• Russian

• Turkish

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Personal Attributes & Competencies

We are looking for someone who combines strong technical expertise with commercial instinct, initiative, and excellent interpersonal judgement.

• Entrepreneurial mindset and enthusiasm for working as part of a small, high-performing team

• A genuine “can-do” attitude

• Commercial awareness with strong negotiation skills

• Confidence to challenge constructively where required

• Strong project management capability

• A self-starter with a proactive, adaptable, and solutions-focused approach

• Confidence to ask questions, seek clarity, and drive outcomes

• Ability to handle highly confidential and sensitive information with discretion

• Outstanding organisation and prioritisation skills

• Refined interpersonal skills, with the ability to build relationships with:

• Key clients

• Investors

• Professional peers

• Ultra-high-net-worth individuals

• Public figures and celebrities

• Ability to remain firm, polite, and professional when handling difficult or sensitive issues

• Comfortable operating in a fast-paced, international environment

• Strong sense of ownership, accountability, and professionalism

• A cooperative and respectful approach with colleagues, clients, and the wider community

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Why Join A.C.T.?

This is an opportunity to join a respected and dynamic Mayfair-based group where you will have real visibility, client exposure, and the chance to contribute directly to the development of the tax team and the wider business.

You will work alongside senior leadership, advise on complex and interesting matters, and play a key role in delivering a first-class service to an international and high-profile client base.

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Compensation & Incentives

• Salary: Competitive and dependent on experience

• Incentive Scheme: Access to a performance-based quarterly bonus scheme, payable depending on seniority

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Location

• Mayfair, London

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Apply

If you are an experienced corporate tax professional looking for a role that combines technical depth, client interaction, and long-term growth potential, we would be pleased to hear from you.