Tax Manager - US/UK Cross Border - London

Our Purpose

At EY, we're dedicated to building a better working world. As a global leader in assurance, tax, transaction, and advisory services, we leverage our finance products, expertise, and systems to create a culture of continuous improvement. Our training, opportunities, and creative freedom empower you to innovate and impact our network of over 300,000 professionals and one million alumni. At EY, you lead, inspire, and bring our purpose to life, both during your tenure and beyond. 

The Team 

Our US/UK Cross-Border Tax team combines the best of both practices to deliver exceptional client service and global reach. With over 45 years of experience advising US and UK private clients, we guide individuals through the complex tax regulations and planning considerations that apply across jurisdictions.

The Opportunity

This is an exciting opportunity for a Tax Manager to join EY’s market-leading US/UK Cross-Border Tax team. You’ll manage a diverse and complex portfolio of clients, ensuring outstanding client service across compliance and advisory engagements. You’ll also play a key leadership role — reviewing returns, managing staff, supporting their development, and upholding EY’s commitment to quality and integrity.

This role offers the opportunity to work with international clients, build deep relationships, and expand your technical expertise within a dynamic, high-performing team.

As a Tax Manager, you will:

• Manage a portfolio of clients with complex US and/or UK tax affairs, ensuring exceptional service and timely delivery.
• Plan and delegate work effectively, overseeing the end-to-end compliance process.
• Lead billing processes, ensuring deadlines and financial targets are met.
• Work with the Credit Control team to support timely payment of invoices.
• Review complex returns with accuracy and rigour, signing off completed work as agreed with senior management.
• Identify cross-disciplinary tax issues (including estate, gift, IHT, or corporate tax) and coordinate with relevant specialists.
• Coach and mentor junior team members, supporting their professional growth and performance.
• Oversee the technical, personal, and administrative development of assigned staff, escalating personnel matters as needed.
• Maintain EY’s high standards of risk management, quality, and client service.
• Act as a role model for EY’s values, maintaining confidentiality and professionalism in all interactions.
• Collaborate flexibly across teams, providing support to colleagues to ensure smooth and efficient operations.

About you

We’re looking for an experienced and motivated professional who demonstrates:

• ATT qualification and US tax certification (Enrolled Agent or CPA) — CTA qualification desirable but not essential.
• At least five years’ experience in professional practice, operating at a similar level.
• Strong technical knowledge of both US and UK tax compliance and advisory work.
• Proven ability to deliver high-quality client service in person, by phone, and via email.
• Experience managing billing, reviewing and signing out returns, and overseeing junior staff.
• Excellent communication skills, both written and verbal.
• Strong organisational skills and the ability to work effectively under pressure.
• Great attention to detail and a high level of accuracy.
• Proven people management skills and the ability to build trusted relationships with colleagues and clients alike.
• Confidence to influence, persuade, and manage challenging client situations with professionalism and tact.
• The ability to work both independently and collaboratively as part of a team.
• Proficiency with relevant IT systems and tax software.

What We Offer

• Global Exposure: Work with international clients and collaborate across EY’s global network.
• Career Progression: Lead high-impact projects and shape your professional journey.
• Support & Coaching: Learn from industry leaders and receive ongoing mentoring.
• Flexible Working: Hybrid model (minimum two days in the office) with a focus on work-life balance.
• Total Rewards: Competitive salary, comprehensive benefits, and exclusive EY perks.
• Inclusive Culture: A workplace where you belong, feel valued, and can thrive.

At EY, belonging means more than fitting in — it means thriving. 

Whoever you are, whatever your background, you are valued, supported, and empowered to be your best.

Ready to lead, inspire, and make an impact? Apply now.