Get it wrong, in either country, and you’re looking at a rejected filing, an unexpected bill, or a structure that costs more in tax than it needed to. That’s the real risk when you’re weighing up setting up a company in Ireland vs UK. The two processes look similar on the surface, but the details, fees, directors’ residency rules, what counts as a registered address, can catch people out.
The good news is that neither system is actually complicated once you know what’s required. Ireland offers a competitive tax regime, EU market access and a young, well-educated workforce, which is why so many UK business owners choose to incorporate here too.
This guide compares Irish and UK company set-up step by step: the registration bodies, costs and timescales, who can be a director, whether you need a company secretary, how many shareholders you need, and what address and information you’ll have to provide. Whether you’re starting a business in Ireland as a foreigner or relocating an existing UK company, this should give you a clear picture of what’s involved.
CRO vs Companies House: How Company Registration Works
Every company must register with a national body before it can trade. In Ireland, that’s the Companies Registration Office (CRO); in the UK, it’s Companies House.
- Ireland: complete Form A1 and a constitution, then submit them to the CRO.
- UK: prepare and submit an application, a memorandum of association and articles of association online to Companies House.
The CRO incorporates new Irish companies, registers business names, and enforces the Companies Act 2014 around companies’ filing obligations. Companies House does the equivalent job in the UK.
| Ireland (CRO) | UK (Companies House) | |
| Registration document | Form A1 + constitution | Memorandum & articles of association |
| Filing fee | €50 | £50 |
| Typical timescale | 3-4 working days from receipt of a complete application | Usually 24 hours |
| Public company search | €2.50 per document | Free |
Company registration in Ireland is straightforward once you know what’s required. Our step-by-step company registration guide covers the paperwork in more detail.
Why Set Up a Company in Ireland Rather Than the UK?
Before getting into the practical differences, it’s worth understanding why so many entrepreneurs choose Ireland as their country of incorporation.
Tax incentives. Ireland’s corporation tax rate is 12.5% for companies centrally managed and controlled here, against 19% in the UK. On top of that:
- A 30% research and development tax credit is available for qualifying companies.
- The Start Up Relief for Entrepreneurs (SURE) scheme offers up to 41% tax relief for new qualifying companies.
- The Knowledge Development Box (KDB) offers 50% corporation tax relief on qualifying profits.
If limited company Ireland tax rates are the main draw for you, speak to an accountant early: qualifying for these reliefs depends on how the company is structured and managed.
EU and Eurozone membership. Ireland is part of the EU single market and Eurozone, with an extensive tax treaty network and access to a labour pool of almost 250 million people across the EU.
A young, educated workforce. 53.5% of 30-34-year-olds in Ireland have a third-level education, against an EU average of 40%, and almost 30% of those graduates are from STEM courses.
State support for growth. Bodies such as the Local Enterprise Office, Enterprise Ireland and Skillnet Ireland offer funding, mentoring and training to help companies build a skilled workforce and scale.
If a second entity in a different country still sounds like a distraction from actually running your business, that’s a fair worry, and a common one. In practice, most of the process happens in the background once the paperwork is filed: the CRO turnaround is a matter of days, not weeks, and an accountant used to cross-border set-ups can carry the admin without needing daily input from you.
Costs of Setting Up a Company in Ireland
The CRO filing fee itself is only €50, but budget for other costs depending on how you set the company up:
- A qualified accountant or company formation service. Outsourcing company formation saves time and reduces the risk of rejected filings. An accountant can also advise on management accounts so you’re tracking your finances from day one.
- A company secretary service. Useful if you’re the sole director, since Irish companies need a named secretary.
- A virtual or registered office address. Handy if you don’t have an Irish address, or you’d rather keep your home address private.
- A company seal. A legal requirement for Irish companies.
- Irish branch or subsidiary set-up. Expanding an existing UK company rather than incorporating a new one can carry additional costs and compliance obligations.
Getting an accountant involved early pays for itself in avoided mistakes. Kinore is a larger, senior-led team rather than a sole practitioner, so questions on structuring, tax reliefs or cross-border compliance go to a dedicated client success contact rather than sitting in a queue.
If you’d rather work through the full process yourself, our essential checklist for setting up a limited company in Ireland walks through each stage.
Choosing a Company Name in Ireland vs the UK
There isn’t much difference between Irish and UK company name guidelines. Both jurisdictions require the company name to end in “Limited” or “Ltd”. In Ireland, you can use the Irish equivalents “Teoranta” or “Teo” if the name is in Irish; in the UK, companies incorporated in Wales can use the Welsh equivalents “Cyfyngedig” or “Cyf”. Either way, the CRO or Companies House will reject a name that’s identical or too similar to one already on the register.
Who Can Be a Company Director?
The minimum age to be a director is 18 for an Irish limited company and 16 for a UK limited company. Both jurisdictions require at least one director, and you don’t have to live in the country where you’re incorporating.
However, an Irish company must have at least one director resident in the European Economic Area (EEA). If none of your directors live in Ireland or the EEA, you’ll need to purchase a Section 137 bond to cover the company, and non-EEA directors must complete identity verification for the CRO. It’s worth planning for early if you’re starting a business in Ireland as a foreigner.
In the UK, anyone over 16 who isn’t disqualified from acting as a director can take on the role.
A director’s details (name, date of birth, occupation, nationality and residential address) are on the public register in both countries, though each jurisdiction lets directors apply to hide their residential address.
Hiding a Director’s Home Address in Ireland
You need to complete Form T1, supported by a statement from a member of An Garda Síochána of at least Chief Superintendent rank, confirming a genuine personal safety or security reason. This only hides your address from the point the form is submitted, so start the process at incorporation if privacy matters to you. Accessing any company information from the CRO, hidden address or not, still costs €2.50 per document.
Hiding a Director’s Home Address in the UK
Complete Form SR01 and pay £30 per document you want changed. A separate form and fee is needed for each filing your address appears on. If your residential address is also your company’s registered address, you can’t hide it; you’d need to change your registered address first (more on this below).
Do You Need a Company Secretary in Ireland?
Yes. Irish companies must appoint a company secretary, while UK limited companies don’t. If your Irish company has only one director, you need a separate person or corporate body as secretary, which is why many single-director companies outsource the role. If you have two directors, one of them can also act as secretary, though many still choose to outsource given the responsibilities involved in running an annual general meeting and keeping statutory records up to date.
UK companies aren’t required to have a secretary, but can appoint one voluntarily to take on some of the director’s administrative responsibilities.
How Many Shareholders Do You Need?
A private limited company in Ireland can have between 1 and 99 shareholders. If you want more than that, or want to offer shares to the public, you’d need to register as a public limited company Ireland (PLC), which carries additional regulatory requirements. A UK limited company needs at least one shareholder, with no maximum.
Shareholders can be directors, the company secretary, or anyone else associated with the company. Selling shares, also called issuing shares, means giving away a piece of the company, usually for cash to fund it. Each company sets its own number of issued shares and share price, and rights can vary by share class. Ordinary shares are the most common private limited company Ireland examples, and what we use as standard when incorporating companies for clients.
Shareholder rights are set out in the company’s Constitution in Ireland, or in the Memorandum and Articles of Association in the UK. If you’re bringing on an investor or co-founder later, our guide on adding a new shareholder to your Irish company covers the compliance steps involved.
What Registered Address Do You Need?
This is one of the clearer differences between the two systems. UK companies can use a PO box as their registered address, provided they also give a physical address and postcode on the application.
Irish companies can’t use a PO box. You need both a registered office address and a business address, they can be different, but both must be identified when you register a company in Ireland. That’s because members of the public can visit the registered office to inspect certain company documents in person.
If you don’t have a suitable Irish address, you can outsource it to a mail-forwarding provider such as Kinore. As a Registered Office Agent (ROA), we can handle your CRO mail requirements and forward your post digitally, usually the same day it arrives.
Company Rules: Constitution vs Memorandum and Articles of Association
Irish companies are incorporated under the Companies Act 2014 and must have a single-document constitution, signed by all shareholders. UK companies are incorporated under the Companies Act 2006 and need both a memorandum of association (a legal statement signed by shareholders agreeing to form the company) and articles of association (the written rules for how the company is run), signed by shareholders, directors and the company secretary. In effect, the Irish constitution combines what the UK splits across two documents.
What Other Information Do You Need to Register a Company?
In the UK, you’ll need to provide at least three pieces of personal information about directors and shareholders, which can include:
- Town of birth
- Mother’s maiden name
- Father’s first name
- Telephone number
- National Insurance number
- Passport number
In Ireland, you’ll need a Personal Public Service (PPS) number, or the equivalent Verified Identity Number (VIN), and a Central Register of Beneficial Owners (RBO) number. Using a company formation service usually means going through Know-Your-Customer (KYC) checks too, including online ID verification for all directors and shareholders. This is for the formation agent’s internal records, not shared with the CRO or the public.
Beneficial ownership. If a company, rather than an individual, is a shareholder, you’ll need to identify the person with ultimate control. In the UK, control means anyone with voting rights or more than 25% of shares, registered as a Person with Significant Control (PSC) with Companies House. In Ireland, control means over 80% ownership, registered as the Ultimate Beneficial Owner (UBO) in the Register of Beneficial Owners (RBO). Where ownership is spread across many shareholders with no controlling stake, you register whoever holds the deciding vote, the chairman or CEO, for example.
To check a company yourself, you can search the CRO register, though most documents cost €2.50 to view. A handful of third-party sites, such as Solocheck.ie, offer some information for free, useful if you want an ireland company register search free option before paying for a document.
Registering for Tax After Incorporation
Tax registration doesn’t happen automatically in Ireland. Once your company is registered with the CRO, you’ll need to submit a separate Form TR1 to Revenue via ROS to register for the relevant taxes. In the UK, you can register for Corporation Tax and as an employer at the same time as incorporating.
If your Irish company trades across borders, you’ll also need to think about VAT registration in each country where you hold stock or exceed distance-selling thresholds. Our guides on managing VAT across borders and VAT when storing goods overseas cover this, and it’s worth reviewing your compliance requirements as a new company so nothing catches you out in the first six months.
FAQs
How much does it cost to set up a company in Ireland compared with the UK? The CRO filing fee is €50 and the Companies House filing fee is £50. Optional extras, such as an accountant, company secretary service, virtual office or company seal, add to the Irish cost, but the core filing fee is broadly comparable.
How long does company registration take in Ireland vs the UK? Irish registration typically takes 3 to 4 working days from a complete application. UK registration is usually processed within 24 hours.
Can a non-EEA resident be a director of an Irish company? Yes, but the company needs at least one director resident in Ireland or the EEA, or a Section 137 bond. Non-EEA directors also need identity verification for the CRO.
Do I need a company secretary if I’m the only director of my Irish company? Yes. Irish companies always need a secretary, and a sole director must appoint someone else, often outsourced to a corporate secretarial provider.
Can I use a PO box as my registered address in Ireland? No. Irish companies need a registered office address and a business address, since the public can inspect certain documents at the registered office in person. A virtual office or Registered Office Agent service is the usual workaround.
Talk to Kinore About Setting Up Your Irish Company
Whether you’re incorporating a new Irish company or expanding an existing UK business across the border, getting the registration, tax and compliance details right from day one saves time and money later. Our team handles company formation, company secretarial services and registered office support for clients across Ireland every day.
Call us on 01 905 9364, email hello@kinore.com, or book a discovery call to talk through the best way to set up your company in Ireland.
The information provided in this article is for general guidance and informational purposes only. It does not constitute professional accounting, tax, or financial advice, and should not be relied upon as a substitute for advice tailored to your specific circumstances. While we take care to ensure the content is accurate and up to date at the time of publication, legislation, tax rates, thresholds, and compliance requirements in Ireland can change.
