Corporate Tax Partner

Carpenter Box, part of the Sumer Group; Portsmouth; On-site; GBP 120,000 - 170,000; Full time

Job summary

Carpenter Box, part of the Sumer Group, is seeking an experienced Corporate Tax Partner to join our Portsmouth team. You will advise on corporate tax planning, risk management, and strategic client work, while leading projects and developing new business.

You will mentor junior staff, drive high-quality deliverables, and collaborate across the firm to expand our corporate tax advisory services for a range of clients in the region.

Qualifications

• Proven corporate tax advisory experience.
• Strong leadership and mentoring skills.
• Ability to manage multiple client projects and relationships.

Responsibilities

• Act as the primary corporate tax advisor for key clients and collaborate with lead Partners.
• Provide specialist advice on corporate restructuring, M&A and cross-border taxation.
• Lead delivery of tax advisory projects, ensuring quality, timeliness and budget adherence.
• Conduct tax research and deliver practical, innovative client solutions.
• Keep clients and teams updated on tax legislation and regulatory changes.

Skills

Corporate tax advisory

Leadership

Client relationship management

Tax research

Analytical thinking

Education

CTA qualified

Tools

Tax software

Job description

Department: Corporate Tax

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.