Corporate Tax Assistant Manager in Wales

At Grant Thornton we do things differently - looking to the future, driving ambitious growth and pioneering positive change in our industry. Providing audit, tax and advisory services, we empower clients through strategic insight, curiosity, and genuine partnership. And we empower our people with real opportunity, an inclusive culture and work life balance.

The Corporate and Multinational tax team specialises in working with large complex businesses to navigate the ever‑changing corporate tax landscape, manage tax risk and ensure compliance with relevant tax laws and regulations. In everything we do our aim is to deliver tailored, proactive and value‑add service to our clients. We combine technical expertise with a commercial approach to build a strong trusted adviser relationship with our clients.

We have ambitious growth plans and are looking for a curious, self‑motivated and enthusiastic Assistant Manager with a UK corporation tax background to work within our team. We’re happy to talk flexible working and consider reduced hours and job shares; we’ll support you to balance your work and life.

A look into the role:

• As a member of the Corporate and Multinational tax team, you will have the opportunity to work with a varied client base, from listed groups to large Private Equity backed businesses.
• Be advising a broad range of clients on a range of tax issues, covering a range of compliance and advisory projects.
• Manage the preparation of tax provisions and returns, ensuring tax reporting obligations and compliance deadlines are met and a high level of client service is provided.
• Be responsible for preparation of tax technical advisory reports.
• Support on day‑to‑day client communications and, together with the senior team, deliver solutions for client advisory projects.
• Manage budgets, WIP and overall day‑to‑day running of client projects.
• Provide on the job support and coaching to junior team members.

Knowing you’re right for us:

The minimum criteria you’ll need is a professional qualification (ATT, CTA, ACA, ICAS or ACA) with post‑qualification experience, and an ability to manage a recurring portfolio of tax clients. It would be great if you had some of the following skills, but don’t worry if you don’t tick every box; we’ll help you develop along the way.

• UK corporation tax technical skills, including experience with both tax provisioning and advisory projects.
• Experience in preparing corporate tax computations, including an awareness of the hybrid and other mismatch rules, interest deductibility, controlled foreign companies regime, Pillar 2, etc.
• Self‑motivated and strong team player.
• Curious and driven to learn.
• Strong oral and written communication skills, and interpersonal skills.
• Familiarity with Alphatax, Power BI, Microsoft Office, and other relevant software.

Knowing we’re right for you:

The culture at Grant Thornton is what sets us apart; we’re known for our inclusive culture and creating environments where all our people can flourish. Our values are the unwavering principles that shape our daily behaviours and decisions, alongside our drive to do the right thing.

In addition to a competitive salary and reward package, you’ll also get:

• Tailored development programmes and access to coaching.
• Flexible bank holidays – allowing you to celebrate the days that are important to you.
• Benefits including pension, life assurance and private medical, additional holiday purchasing and health benefits.
• Access to shopping discounts, gym memberships, financial advice.

How we work:

We have a trust‑based way of working, driven by responsible people who have the best interests of our firm and our clients at heart. Our framework gives flexibility in where, how, and when we work to deliver the best results for our clients, whilst helping you keep a balance between work and life.

We’re looking for people who can help drive the business forward, who want to contribute, spark fresh ideas and go beyond expectations. People who want to be able to proudly do what’s right, for the firm, our clients, our people and themselves.