Ireland’s 2026 R&D Tax Credit: is your industry missing out?

No lab coat needed: If your Irish business spends time in 2026 trying to solve “technical uncertainty” or improve a process, let’s reassess your R&D.

Many Irish businesses assume the Irish Research and Development (R&D) Corporation Tax Credit is only for companies with labs or high-end tech hubs. In reality, Ireland’s 2026 R&D guidelines are quite broad.

Ireland is one of the world’s most competitive R&D regimes. The R&D tax credit is reviewed regularly to ensure its continued relevance and effectiveness, and the recent updated combination of a 35% rate, the 95% salary rule, and front-loaded payments makes 2026 the most lucrative year ever to audit your R&D activities.

What are the enhancements to Ireland’s R&D tax credit in 2026?

1. Finance Act 2025 provided an increase in the rate of the R&D tax credit from 30 per cent to 35 per cent.
2. The “95% Rule”: If an employee spends at least 95% of their time on qualifying R&D activities, you can now claim 100% of their emoluments (salary, pension, and PRSI). If you have a dedicated developer or engineer, you can now likely claim all their salary without the ztime-tracking headaches.
3. Revenue has increased the first year payment threshold (FYPT) to €87,500. 

Who qualifies for Ireland’s R&D tax credit?

The categories of activities that qualify for the R&D tax are:

1. Natural Sciences
2. Engineering and Technology
3. Medical Sciences
4. Agricultural Sciences

To qualify, your project must be systematic, investigative or experimental activities, in a field of science or technology, encompassing basic or applied research, or experimental development. It must:

• Seek to achieve a scientific or technological advancement.
• Involve the resolution of a scientific or technological uncertainty.

It might seem complex (here’s more guidance in a pdf) but if your business is facing a “technical bottleneck” and you’re forced to dedicate staff full-time to experiment to find a solution, you’re likely to be performing R&D.

What does that look like in real life?  Whether you are in Food Science, Fintech, or Manufacturing, if you are struggling with a technical “bottleneck” that doesn’t have a ready-made solution, you are likely performing R&D.

4 industries who often leave the R&D 35% on the table:

1.       Food & beverage

Most food businesses in Ireland view new product development as “normal” work but the technical challenges behind them can qualify as R&D, such as: reformulating a product to reduce sugar or salt, developing new techniques or packaging to keep foods fresh for longer, or the bespoke engineering needed to take a recipe from a kitchen bench to a production line.

2.      Agriculture & horticulture

For many farmers and agri-business owners in Cork, Research & Development sounds like something that happens in a lab at UCC. But with the push toward “green” farming, Cork agri-businesses could be innovating without realising it.

Soil and fertiliser experiments, animal health and nutrition: If you are trying new ideas and measuring the results to see what works, that could be an experimental trial. If you are testing and tracking the impact, that’s solving a “technical uncertainty.”  If you are trying to solve a problem and the answer isn’t in a manual or a standard Teagasc guide, it’s time see if it’s R&D.

3.       Construction & engineering

When a site or project hits a snag that standard building codes don’t cover, the solution is often R&D. That could look like complex civil engineering using unique methods, developing bespoke structural components or experimenting with 3D-printed materials, or testing how sustainable aggregates perform under specific structural loads.

4.       Manufacturing

You don’t have to invent a new machine to qualify; improving how you use the machine counts. If someone in your business is  “hacking” or custom-coding software systems to talk to your hardware for the first time to improve efficiency, that is qualifying R&D, as is developing new processes to recycle or treat waste products within your own factory line. 

What’s needed to claim the R&D tax credit?

With higher rewards comes higher scrutiny. Revenue expects “contemporary and consistent” documentation to support all claims.

Your company must be in a position to demonstrate that any claim can satisfy two essential tests: the so-called “Science Test” and the “Accounting Test”. Together, they prove that the work was technically eligible and that the costs were accurately recorded.

The Science Test: Is the work eligible?

This test confirms that activities meet the statutory definition of R&D. It focuses on the technical “why” and “how” of your project.

You must identify the specific field of science or technology and the goal you are seeking to achieve, prove that the “bottleneck” you are solving is not something a “competent professional” could easily resolve using existing knowledge. Work must show a hypothesis, a series of experiments to test it, and dated documents tracking your progress and conclusions.

The Accounting Test: Is the spend correct?

This test ensures that the expenditure claimed was actually incurred on the qualifying R&D activities and is correctly calculated.

You must document the exact start and end dates of the project, provide a project plan with milestones and a record of progress against that plan.  You need to show exactly which personnel worked on the project, their qualifications, and precisely how much as well as records of payments to subcontractors or universities, specifically detailing the R&D work they performed for you.

For shared costs like light, heat, or rent, you must provide a logical, bona fide method of apportionment (cost-splitting) that shows a clear link between the expense and the R&D project.

Passing the Science Test defines your eligibility, but the Accounting Test determines your ultimate payout.

Revenue looks for a direct “nexus” or link between your technical milestones and your accounting records.