R&D Tax Credit in Ireland: Your Friendly, Fully Updated Guide

Ireland’s Research & Development (R&D) tax credit lets you reclaim 25c for every €1 spent on qualifying R&D—on top of standard deductions. Whether you’re developing AI algorithms, novel pharmaceuticals, or energy-efficient manufacturing, this credit can supercharge your budget. 

Below is a human-centred walkthrough—complete with tables, real-world tips, Finance Bill 2023 updates, SME enhancements, Emerging AI trends and how Experlu can guide you to success

1. What Is the R&D Tax Credit? 

  • Rate: 25 % tax credit on eligible R&D spend 
  • Refundable: Yes—unused credit refunded over 3 years if you have no corporation tax liability 
  • Carry-forward: Yes—apply any excess against future profits 

The R&D (Research and Development) Tax Credit is a government incentive designed to encourage companies to invest in innovation, technological advancement, and product or process development.

2. Recent Updates (Finance Bill 2023) 

Update What’s Changed 
Faster Payments Revenue now processes refundable R&D credits within 8 weeks of claim approval 
SME Focus Turnover threshold for “SME R&D claims” raised to €100 million; simplified documentation 
Activity Clarity Revenue refined definitions around software R&D and prototyping to align with EU guidelines 

3. Who Qualifies? 

Criterion Explanation 
Advance Science/Tech Your project resolves uncertainty not solvable by existing methods 
Experimental Work You perform tests, prototypes or iterations 
Documentation You record hypotheses, trials, results and next steps 
SME Special Rules SMEs benefit from lower admin, fewer documentation requirements 

4. Qualifying Costs at a Glance 

Cost Type Included? 
Salaries & Wages Staff directly on R&D (in-house & contracted) 
Materials Consumables, prototype parts 
Subcontractors Third-party specialists 
Utilities Pro-rated energy/space used in R&D 
Equipment Allowance Wear-and-tear on R&D machinery 

5. Step-by-Step Application 

  1. Plan & Record 
  • Document your scientific uncertainties, planned experiments and results. 
  1. Calculate Spend 
  • Sum eligible salaries, materials, subcontractor fees and utilities. 
  1. Complete Form CT1 
  • Fill out the R&D section, attach a technical summary. 
  1. Submit & Review 
  • Revenue aims for 8-week turnaround on refundable claims. 
  1. Receive Your Credit 
  • Offset against tax or request a refund over 3 years. 

6. Real-World Tips 

  • Start Now: Log as you go—avoid year-end scramble. 
  • Keep It Concise: A clear narrative + simple cost table often beats 50 pages of notes. 
  • Leverage AI: Use tools like ChatGPT to draft your technical summaries—then refine manually. 
  • Peer-Review: A tax adviser can spot overlooked costs. 
  • Annual Review: R&D projects evolve—update your claims yearly. 

7. Emerging Trends: AI-Augmented Claims 

  • Automated Cost Tracking: AI tools can tag invoices and timesheets to R&D projects automatically. 
  • Smart Documentation: Generative AI can draft hypothesis statements and methods outlines. 
  • Predictive Eligibility: Machine-learning models help pre-screen activities likely to qualify. 

8. How Ireland Compares Internationally 

Country R&D Rate Refundable? Ease of Claim 
Ireland 25 % Yes (3 yrs) Single regime, clear rules 
UK 13–20 % Yes (SMEs) Two regimes (SME & RDEC) 
USA ~10 % No (some states) Complex federal/state split 
France 30 % Yes (cash lump) Detailed justification 

9. How Experlu Can Help 

Service Benefit 
Eligibility Assessment Identify ALL qualifying activities and costs 
Documentation Support Create concise technical summaries & cost tables 
Full-Service Claim End-to-end CT1 completion, filing and Revenue liaison 
Audit Defense Compile and present supporting evidence if Revenue requests more 

10. Quick FAQ 

Question Answer 
When’s the deadline? Up to 12 months after your accounting period end. 
Can loss-making firms claim? Yes-Revenue will refund unused credits over three years. 
Do I need records? Absolutely-project logs, staff records, emails, invoices and contracts. 
What about capital equipment? You claim a wear-and-tear allowance, not full cost up front. 
Is it only for big firms? No- SMEs (< €100 m turnover) get simpler forms & faster payments.