Post-Brexit, many UK groups want a company in Ireland so they can keep trading easily with EU customers. That makes sense, but it also brings more attention from tax authorities on both sides of the Irish Sea. If the Irish company has no real activity, HMRC, Irish Revenue or even customers may question what you are doing and why.
This is where the risk of shell companies and “brass plate” structures comes in. On paper they look fine, but in practice there is little or no real business in Ireland. In this guide, we share a due diligence checklist you can use before you partner with, buy, or relocate through an Irish company, based on what we see every day as an Irish formation and compliance firm.
Protecting Your UK Business From Irish Shell Risks
UK firms are turning to Ireland to keep EU market access, reduce customs friction, and support EU-based sales teams. But once you move activity across a border, the questions begin. Where is the company really managed? Who is doing the work? Is the Irish entity more than a name and a postbox?
The problems with a shelf-style Irish company can include:
- Loss of treaty benefits or reliefs you were counting on
- HMRC arguing there is still a UK permanent establishment
- Irish Revenue challenging transfer pricing or expenses
- Reputational damage with banks, auditors and key customers
So before you tie your strategy to an Irish company, you want simple, practical checks. Think of it as “substance due diligence”: you are not only checking the legal documents, you are testing if there is real life behind them.
Why Substance Matters More Than Ever Post-Brexit
Real substance, in the Irish context, means the company can stand on its own two feet. It is not just a registered address in Dublin or Cork, it has:
- Real management and control in Ireland
- People who do day-to-day work there
- Premises where that work actually happens
- Commercial reasons for being in Ireland, not just tax
Tax authorities look closely at where key decisions are taken. They pay attention to board meetings, where directors live, where contracts are signed and who actually negotiates them. They also look at transfer pricing, controlled foreign company rules and anti-avoidance rules when they see a UK group with an Irish entity.
Spring and early summer are often when boards step back and review group structures. It is a good time to look at your Irish company, or the one you plan to use, and check if the story on paper matches reality before audits, lender reviews and mid-year board packs.
Governance and Management Checks That Pass Tax Scrutiny
Start with the people at the top. Directors are the first sign of whether an Irish company is real or just convenient.
Things to review:
- Board composition and residency, including how many directors are Irish resident
- How many companies each director is on, and in what sectors
- Whether they attend meetings and sign minutes, or are just names
If you see the same director sitting on hundreds of small companies in different lines of business, that is a warning sign. It suggests a nominee role, not active management.
Next, look at how decisions are made in practice. Ask for:
- Board minutes over a period of time
- Evidence of meetings in Ireland, not always in the UK
- Resolutions on key items like banking, contracts and hiring
You want to see that important decisions are discussed and made in Ireland, with real input from directors who understand the business. If directors cannot explain your operating model, key risks or group policies, it is hard to argue that management and control really sit in Ireland.
Operational Footprint: Premises, People and Activity
A company with substance feels present when you visit. A basic registered office service will give you an address and mail handling, but little more. For a trading company, you should expect:
- A real office, shared space or site where staff can work
- A lease or licence agreement in the company’s name
- Signs, access cards and utilities that match the story you have been told
An on-site visit is still one of the best checks. You quickly see if it is a genuine workplace or just a locked door with a long list of names.
Then, focus on people. Ask for:
- A staff list or contractor list tied to Irish payroll or Irish contracts
- Job descriptions that match the functions the company claims to do
- Evidence that finance, operations, sales or compliance tasks are carried out in Ireland
Mailbox-only services or “virtual offices” have their place, but they do not by themselves create substance. You also want to test commercial activity. Sample:
- Customer and supplier contracts
- Purchase orders and delivery terms
- Bank statements that show trading income and operating costs
Income and key functions should sit with the Irish company, not be booked quietly in the UK while the Irish entity takes only a small margin.
Financial, Tax and Banking Red Flags to Avoid Shelf Traps
The financial history of an Irish company often tells you if it is real or not. When you review accounts, CRO filings and annual returns, look for:
- More than tiny turnover if the company claims to be active
- Payroll costs and staff-related expenses
- Premises costs such as rent, utilities and services
If the numbers are barely above zero year after year, yet you are told it is a major EU hub, that gap needs to be explained.
On the tax side, check:
- Corporation tax registration and filing status
- VAT registration and whether returns have been made on time
- Whether the tax profile fits the apparent level of activity
A company that trades with EU customers at scale but has no VAT registration or only a few small returns is a concern.
Banking is another useful check. Substance looks stronger when the Irish company has:
- An Irish or wider EU bank account in its own name
- Regular trading flows through that account
- Payments to staff, suppliers and the Irish tax authority
Dormant accounts or accounts used only for intra-group shuffling do not support the story of a live Irish operation.
Turning Due Diligence Into a Substance-First Irish Launch Plan
When you put all these checks together, you get a clear picture. A genuine Irish company for a UK group will show:
- Active and informed directors, ideally with Irish presence
- Real decision-making in Ireland
- Premises that match the work being done
- People on the ground doing day-to-day tasks
- Financial, tax and banking records that fit the commercial story
For many UK boards, CFOs and legal teams, spring is a smart time to build these checks into the planning cycle. It gives space to fix weak spots, reshape board and management roles, and adjust operating models before year-end pressure and heavier trading periods arrive.
As an Irish company formation and compliance firm, we at Chern & Co Ltd work with UK and non-UK groups that want real substance rather than a quick shelf solution. A trusted Brexit relocation company in Ireland will not only set up the company, it will help you shape governance, staffing, premises and documentation so your Irish presence stands up to tax and regulatory review, and also supports your wider UK and EU strategy.
Simplify Your Move To Ireland With Expert Brexit Relocation Support
If you are ready to relocate and want a partner that understands both UK and Irish requirements, we are here to help. As a specialist Brexit relocation company in Ireland, Chern & Co Ltd will guide you through each step so your business can transition smoothly and stay compliant. Share your plans with us via our contact us page and we will respond with tailored options that match your timeline and goals.
Frequently Asked Questions
- What is an Irish shell company or brass plate company?
- An Irish shell company, sometimes called a brass plate company, is an entity that exists on paper but has little or no real business activity in Ireland. It may have a registered address and filings, but lacks genuine management, staff, premises, or operations.
- Why do UK businesses set up an Irish company after Brexit?
- Many UK groups use an Irish company to keep smoother access to EU customers, reduce customs friction, and support EU-based sales activity. Doing this can attract more scrutiny, so the Irish company needs real substance to match its role.
- How can I check if an Irish company has real substance before partnering or buying it?
- Review who manages it, where key decisions are made, and whether directors are genuinely involved, including evidence like board minutes and meeting location. Confirm it has an operational footprint such as premises in its name, people doing day to day work in Ireland, and a clear commercial reason to be there.
- What are the tax and business risks of using a shelf style Irish company?
- Risks can include losing treaty benefits or tax reliefs you expected, challenges from HMRC or Irish Revenue over where the business is really run, and disputes about transfer pricing or expenses. It can also create reputational issues with banks, auditors, and customers.
- What is the difference between a registered office in Ireland and real operational presence?
- A registered office is mainly an address for legal notices and mail handling, and it does not prove the company is actually trading in Ireland. Real operational presence means the company has premises where work happens, staff or contractors performing activities, and management decisions being made in Ireland.
