Grant Thornton UK
Corporate Tax Assistant Manager
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Corporate Tax Assistant Manager
Corporate Tax Assistant Manager – Grant Thornton
About the Role
At Grant Thornton, we set out to do things differently—focusing on ambition, growth, and purpose. Providing audit, tax, and advisory services, we partner with clients and employees to create an inclusive, forward-thinking environment for change and success. With over 5,000 people in the UK and a global presence, we’re on a mission to go from great to exceptional, backed by opportunity, flexibility, and opportunity for growth.
NEW GROUND WON’T BREAK ITSELF.
The Corporate and Multinational tax team specialises in working with large, complex businesses to navigate the ever-changing tax landscape, manage risk, and ensure compliance. Our team delivers tailored, proactive, and value-added solutions while combining technical expertise with a commercial mindset. We build trusted adviser relationships with sophisticated tax teams globally—and we’re looking for a sharp, self-motivated Assistant Manager with a UK corporation tax background to join us on this journey.
Flexible working is supported—whether through reduced hours or job shares—so you can balance your career and your life.
Key Responsibilities
As part of the Corporate and Multinational tax team, you’ll serve a diverse client base, from listed groups to large private equity-backed businesses.
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In this Corporate Tax Assistant Manager role, you will:
- Advise clients across a range of tax issues, covering both compliance and advisory projects.
- Manage the preparation of tax provisions and returns, ensuring deadlines are met and delivering high levels of client service.
- Prepare technical advisory reports for client strategies.
- Support day-to-day client communications and drive solutions for advisory projects (in collaboration with the senior team).
- Oversee budgets, WIP (work in progress), and the operational workflow of client projects.
- Provide mentorship and coaching to junior team members.
Requirements
To succeed as a Corporate Tax Assistant Manager, you’ll need to:
- Hold a professional qualification (ATT, CTA, ACA, ICAS, or ACCA) with post-qualification experience.
- Manage a recurring portfolio of tax clients while maintaining strong client service standards.
While experience in the following would help, we’re adaptable:
- UK corporation tax technical skills, including expertise in:
- Tax provisioning and advisory projects.
- Hybrid and mismatch rules, interest deductibility, controlled foreign companies regime, and Pillars 2.
- Ability to work independently yet collaboratively—being self-motivated and proactive.
- Strong oral and written communication skills, alongside professional interpersonal abilities.
- Proficient in Alphatax, Power BI, and Microsoft Office.
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Why Grant Thornton?
Our inclusive culture encourages our people to thrive and deliver exceptional work. We value curiosity, candidness, and deliberate kindness, alongside our commitment to doing the right thing at every turn. Here’s how you’ll benefit beyond a competitive salary and reward package:
- Tailored development programmes and career coaching.
- Flexible bank holidays—celebrating what matters to you.
- Comprehensive benefits: pension, life assurance, private medical insurance, extra holiday purchasing, and health support.
- Practical perks: discounts for shopping, gym memberships, and financial advice.
Our people-led ideology means balance, authenticity, and belief in what work should really look like. You’ll fit into a firm and team that thrives on responsibility, integrity, and mutual growth.
“Life is more than work.” Our flexible approach lets you spark fresh ideas, exceed expectations, and work on your terms.
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