Deputy Head of Tax

CMS UK Sheffield, England, United Kingdom

We are seeking an experienced and commercially astute Senior Tax Manager to join our dynamic tax team as our Deputy Head of Tax.

This role will focus on assisting the current Head of Tax while managing complex tax matters relating to tax projects, international partners and cross‑border structures within the CMS CMNO LLP network. You will play a key role in ensuring compliance, advising on the tax implications of international working arrangements, and supporting strategic initiatives across jurisdictions.

• Assist the Head of Tax on ad‑hoc partnership and international projects.
• Support the existing senior tax manager team.
• Assist with tax advisory and compliance for International Managers (IMs) and LLP members across CMS’s global offices.
• Collaborate with HR, Finance, and Legal teams to assess tax risks and implement compliant solutions for international structures and projects.
• Manage relationships with external tax advisors and ensure alignment with CMS’s internal policies.
• Support the development and implementation of tax policies for international partners, self‑employed consultants, and branch employees.
• Monitor legislative changes and assess their impact on CMS’s international tax strategy.
• Contribute to internal training and knowledge sharing across the business.

• ACA/CTA qualified or equivalent with significant post‑qualification experience in international and partnership tax.
• Proven expertise in international partnership taxation and cross‑border structures.
• Knowledge of transfer pricing is desirable.
• Strong understanding of LLP structures and international frameworks.
• Experience working in a professional services or legal environment preferred.
• Excellent management, communication and stakeholder management skills.
• Ability to work independently and lead complex projects across jurisdictions.

• People Management experience.
• Experience with tax systems and compliance in multiple jurisdictions.
• Knowledge of Elite 3e and CCH.

• Competitive basic salary (reviewed annually).
• Flexible, hybrid working policy.
• Generous bonus scheme.
• Up to 25 days holiday (rising to 28 days with service).
• Holiday exchange scheme.
• Private medical insurance.
• Enhanced parental leave.
• Reasonable adjustments and accommodation for disabled talent in accordance with the Equality Act 2010.