Corporate Tax Partner

Sumer Group; Portsmouth; On-site; GBP 120,000 - 190,000; Full time

Job summary

Carpenter Box, part of the Sumer Group, seeks an experienced Corporate Tax Partner to join our Portsmouth team. You will provide strategic tax advice, lead projects, manage client relationships, and contribute to growth of corporate tax advisory.

The role requires CTA qualification (or equivalent), strong UK tax knowledge, leadership, and ability to win new work. You will mentor junior staff and work on cross-border matters.

Qualifications

• Proven experience in a corporate tax advisory role.
• CTA qualified (or equivalent) with significant experience advising personal and corporate clients.
• Strong knowledge of UK tax legislation and advisory issues.
• Experience in managing client relationships and leading projects.
• Analytical and strategic mindset with leadership ability.

Responsibilities

• Act as the primary corporate tax advisor for key clients with lead Partners.
• Provide specialist advice on restructuring, M&A, cross-border taxation and compliance.
• Lead delivery of tax advisory projects on time and within budget.
• Conduct tax research to deliver practical, innovative solutions.
• Stay updated on tax legislation and share updates with teams and clients.
• Support business development and coordinate opportunities for international projects.
• Mentor and develop junior staff and foster growth.

Skills

Corporate tax advisory

CTA qualified

Leadership

Client relationship mgmt

UK tax legislation

Project leadership

Mentoring

Business development

Education

CTA qualification or equivalent

Tools

Tax software

Job description

Corporate Tax Partner

Department: Corporate Tax

Employment Type: Permanent

Location: Portsmouth

Description

Carpenter Box is proud to be part of the Sumer Group. We are chartered accountants, tax, and business advisers based in the South East. Our culture is built on collaboration, innovation, and professional excellence, where every team member is encouraged to grow, contribute, and make a real difference.

We are seeking an experienced Corporate Tax Partner to join our expanding team in Portsmouth. You will need to possess extensive technical tax knowledge and be able to provide strategic commercial advice to clients on tax planning and risk management. You will also play a key role in winning new work, managing client relationships, leading projects, and contributing to the growth of our corporate tax advisory service.

The Role

• Act as the primary corporate tax advisor for key clients, working closely with lead Partners to deliver tailored tax solutions.
• Provide specialist advice on corporate restructuring, M&A transactions, cross-border taxation, and complex compliance matters.
• Lead the delivery of tax advisory projects, ensuring work is completed to the highest standard, on time, and within budget.
• Conduct thorough tax research and analysis to deliver practical and innovative solutions to complex client issues.
• Stay informed on changes in tax legislation and regulatory requirements, sharing relevant updates with clients and internal teams.
• Support business development efforts through networking, presentations, and proposal preparation. Leverage our membership in GGI International to generate inbound corporate tax opportunities and coordinate local advice for international projects.
• Mentor and support junior staff, offering training and guidance to enhance their technical skills and professional growth.

About You

Skills and experience:

• Proven experience in a corporate tax advisory role.
• CTA qualified (or equivalent) with significant experience advising personal and corporate clients.
• Strong technical knowledge of UK tax legislation and advisory issues.
• Experience in managing client relationships and leading projects.
• Excellent analytical and problem-solving abilities, with a strategic mindset.
• Strong leadership skills, with experience in team development and mentoring.
• Ability to work collaboratively in a fast-paced environment and manage multiple priorities.
• Proficient in tax software and relevant tools.
• An entrepreneurial mindset and enjoyment in identifying business opportunities.
• Passionate about building strong networks and collaboration across teams, whilst taking pride in delivering high-quality work and exceeding client expectations.

Belong @ Sumer

At Sumer, we are committed to fostering an inclusive and diverse work environment, not just as buzzwords, but as the heartbeat of our team. Our recruitment practices reflect this commitment, welcoming individuals from all backgrounds. We prioritise creating an environment where every candidate feels respected and supported throughout the hiring process.

Everyone is unique and we understand that each individual may have distinct needs to showcase their best selves during interviews. Our commitment is to offer personalised support for all.