Tax Assistant Manager

Forvis Mazars is a leading global professional services network providing audit, assurance, tax, and advisory services. In the UK, we operate out of 14 offices and employ over 3,400 professionals, including 190 partners.

As an Assistant Manager you will support the management and delivery of a wide range of UK employment tax advisory and compliance projects. You will have direct exposure to clients, be responsible for reviewing work from junior colleagues, and build specialist expertise across areas such as IR35, benefits and expenses, reward strategy and cost reduction, PAYE/NIC governance, the Construction Industry Scheme, NMW and HMRC enquiries.

You will work closely with senior team members and Partners and be part of a high‑performing national employment tax and wider Global Employer Solutions community.

• Support and deliver advisory projects covering PAYE/NIC, benefits, expenses, termination payments, cost reduction/reward strategy, employment status (IR35, Umbrella, etc.), CIS, NMW and payroll governance.
• Prepare and review advisory notes, calculations, technical reports and HMRC correspondence.
• Assist with PSAs, P11D reviews, employer compliance checks and year‑end processes.
• Join client meetings and calls, contributing to discussions and follow‑up actions.
• Review work prepared by junior colleagues, providing coaching and feedback.
• Support business development activities through research, drafting proposals and preparing marketing material.
• Contribute to technical training, knowledge sharing and process improvements within the team.

• 3+ years of overall UK employment tax experience (practice or in‑house).
• Strong understanding of UK PAYE/NIC rules, expenses and benefits, IR35/worker status and HMRC processes.
• ATT/CTA qualified and/or with employment tax experience.
• Strong written communication skills with the ability to prepare clear, accurate advisory work.
• Attention to detail and a proactive approach to problem solving.
• Interest in developing technical depth and taking on client‑facing responsibility.
• Team player who enjoys collaborating with colleagues across levels.

At Forvis Mazars diversity, equity, and inclusion are central to our values. We value our people's unique backgrounds, perspectives, and experience and seek to attract, develop, and retain the best talent, inclusive of sex, ethnicity, disability, socio‑economic background, sexual orientation, gender identity, nationality, and faith. Candidates are selected on the basis of skills, knowledge, qualifications, and experience, and we aim to support all team members to reach their potential.

Ready to grow, belong, and impact? Join us at Forvis Mazars.