2026 Summer Internship: ROI Tax & Legal: Research & Development Gi3

Deloitte is the biggest professional services Firm in the world and making an impact is more than just what we do: it’s why we’re here. We’re driven to create positive progress for our clients, community, people, and the planet. This sense of purpose inspires us to work to the highest standards, to tackle the challenges that matter.

A summer at Deloitte is more than just an internship—it’s your gateway to the world of business and to Deloitte Ireland’s award-winning graduate programme - Future Leaders Academy. Over your internship you will dive into real-world challenges, gain hands-on experience, and uncover what truly excites and inspires you. Through innovative, impactful projects, you’ll get a taste of what a full-time role at Deloitte feels like, setting the stage for you to become a leader of tomorrow.

Who are we

Deloitte is the world’s largest professional services firm, delivering expertise in Audit & Assurance, Tax & Legal, and Consulting. With a global network of 450,000 professionals globally - including 3,400 in Ireland—we provide world-class solutions.

How to Apply

You will be asked to confirm which role you are applying to, Please select:

Research & Development (R&D) - Global Investment & Innovation Incentives (Gi3)

What is Tax & legal at Deloitte? 

Tax is all about solving complex intellectual challenges. We help our clients make the right business decisions, on a worldwide scale, by working collaboratively and creatively. This means you get to work on challenging and innovative projects, with some of the world's largest and most prestigious organisations, gain exposure to different sectors and industries, and become an expert in your specialist field. 

What Does a Tax & Legal Research & Development Intern Do?  

Research & Development (R&D) - Global Investment & Innovation Incentives (Gi3) 

• Work with diverse clients across industries such as software, biotechnology, pharmaceuticals, manufacturing, and more.
• Gain exposure to cutting-edge technology in various STEM fields. 
• Review and analyse R&D activities for businesses, from SMEs to multinationals.
• Support the development of green and sustainable technologies and products.
• Conduct technical interviews with innovation leaders to document R&D efforts for Irish Revenue, IDA, or Enterprise Ireland. 
• Align client activities with R&D Tax Credit and grant qualification criteria.
• Draft and review technical project reports to support R&D claims. 
• Prepare R&D Tax Credit financial calculations. 
• Assist in supporting R&D Tax Credit claims during Revenue audits or inquiries.
• Identify and explore additional R&D funding opportunities for clients. 

What we are looking for?

• Academic Achievement: On track for, or have achieved, a 2.1 honors degree or higher.   
• We welcome students from all academic backgrounds, including accounting, Business, Law, STEM Subjects and Arts & Humanities 
• Skillset: Demonstrated numerical fluency, leadership potential, creative problem-solving, and strong communication skills. 
• Work Eligibility: Legal right to work in the Republic of Ireland.   

Ready to Launch Your Career?

Location: Hybrid roles based in Dublin, Cork, Galway or Limerick.

Important: You can apply to only one summer internship opportunity—choose wisely!

If you believe that you meet most of the criteria above, we encourage you to apply. Deloitte is an equal opportunities employer and will ensure any reasonable accommodations are implemented as part of the recruitment and selection process.

What makes the FLA graduate programme different?

• It focuses on building leadership capability for the future, offering all graduates a permanent contract.
• It is a multi-award-winning graduate programme recognised by gradireland and The Irish Accountancy Awards.
• Rewards and benefits include a market leading professional services salary, immediate access to paid private health insurance and a pension scheme from day one with matching employer contributions.
• Enhanced professional and financial education support is provided through comprehensive study leave and focused learning and development programmes.

Ongoing performance feedback on client assignments drives improved advisory skills.