Corporate Tax Assistant Manager

Grant Thornton UK; Greater London; Hybrid; GBP 45,000 - 60,000; Full time

Job summary

A leading audit and advisory firm in the United Kingdom is seeking a Corporate Tax Assistant Manager who can advise clients on tax issues and manage compliance projects. The ideal candidate has a professional qualification and strong technical skills in UK corporation tax. This role offers tailored development programs, flexible working options, and a commitment to work-life balance within an inclusive culture.

Benefits

Flexible bank holidays

Pension and life assurance

Private medical benefits

Shopping discounts and gym memberships

Qualifications

• Professional qualification with post-qualification experience.
• Experience managing tax clients and compliance projects.
• Ability to prepare corporate tax computations and advisory reports.

Responsibilities

• Advise clients on tax issues and manage compliance projects.
• Prepare tax returns, ensuring compliance deadlines are met.
• Support junior team members with on-the-job coaching.

Skills

UK corporation tax technical skills

Strong communication skills

Self-motivated team player

Education

Professional qualification (ATT, CTA, ACA, ICAS)

Tools

Alphatax

Power BI

Microsoft Office

Job description

Corporate Tax Assistant Manager

At Grant Thornton we do things differently – looking to the future, driving ambitious growth, and pioneering positive change in our industry. We provide audit, tax and advisory services, empowering clients with strategic insight, curiosity and genuine partnership. We empower people with real opportunity, an inclusive culture and work‑life balance. A true alternative.

With over 5,000 people in the UK and a presence in 150 global markets, we are on an ambitious journey from great to exceptional. We need the best people to help us achieve our potential and help redefine what our industry looks like, and what you want from your career.

Corporate Tax AM

NEW GROUND WON’T BREAK ITSELF.

Every day our teams help people in businesses and communities to do what is right and achieve their goals. 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‑added service to our clients.

We combine technical expertise with a commercial approach to build a strong trusted adviser relationship with our clients. We work with sophisticated tax teams, which means that the work we do is technically challenging and international. With ambitious growth plans, we 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 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.

As a Corporate Tax Assistant Manager you will:

• Be advising a broad range of clients on a variety 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 while delivering a high level of client service.
• Be responsible for preparation of tax technical advisory reports.
• Support 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

We are looking for a Corporate Tax Manager who meets the minimum criteria of 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. The things that set you apart, we value them, and this helps us all to perform at our best.

Our values are the unwavering principles that shape our daily behaviours and decisions, alongside our drive to do the right thing. We’re looking for people who align with our values and are purposefully driven, actively curious and candid but kind. You can learn more about our values in practice here.

It’s not just about our culture and values. 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.

And more. Visit our benefits section to read more.

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 how‑we‑work framework gives flexibility in where, how, and when we work to deliver the best results for our clients, while helping you keep a balance between work and life. Life is more than work, the things you do, and the people you’re with outside of work matter, that’s why we’re happy to look at flexible working options for all our roles. That is how it should be.
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. It’s how it should be.

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