Last reviewed June 2026
Yes. Irish companies are still legally required to include certain information on their business letters, order forms and official correspondence.
A compliant company letterhead should include:
Failure to display the correct information can result in compliance issues and potential penalties.
A company letterhead is the official heading used on business correspondence, invoices, quotations, contracts and formal communications.
Traditionally used on printed documents, modern letterheads now also appear on:
A professional letterhead helps establish credibility, reinforces your brand and demonstrates compliance with Irish company law.
Yes. While most business communication is now digital, Irish companies must still ensure that required company information appears on official business correspondence.
The rules apply whether documents are:
Modern businesses should think of letterhead compliance as applying to all official communications rather than just physical stationery.
Under Irish company law, a company letterhead should contain specific information.
The full legal company name must be displayed exactly as registered with the Companies Registration Office (CRO).
For example:
Nathan Trust Limited
Not:
Nathan Trust
Your CRO registration number must appear on the letterhead.
This allows customers, suppliers and regulators to identify your company.
The registered office address must be included.
This is the official address recorded with the CRO and may differ from your trading address.
The letterhead should state where the company is registered.
Example:
Registered in Dublin, Ireland
If the company trades under a business name that differs from its registered company name, both names should be displayed.
Where a director is not Irish, their nationality should be disclosed.
Although not always legally required, most modern Irish businesses also display:
Including these details makes it easier for customers and suppliers to contact your business.
If your letterhead is used on invoices, it is advisable to include:
This helps ensure compliance and creates a more professional customer experience.
Many businesses now use digital-first letterheads.
To maximise professionalism and compliance:
Your logo, fonts and colours should match your website, invoices and marketing materials.
Many business documents are viewed on phones and tablets.
Keep designs clean and easy to read.
Maintain standard templates across:
Letterheads should be updated whenever there is a change to:
Many businesses unintentionally fall out of compliance by:
A periodic compliance review can help avoid these issues.
Even in a digital-first business environment, a professional letterhead:
For regulated industries such as financial services, healthcare and professional services, a compliant letterhead remains an important element of corporate governance.
Irish companies must display certain statutory information on business correspondence, including company letters and official documents.
Yes. Digital letterheads are widely accepted provided they contain the required company information.
While not always required on every document, it is strongly recommended where invoices are being issued.
Failure to display required company information may result in breaches of Irish company law and could lead to penalties.
Yes. Consistent branding and company information across all communications improves professionalism and reduces compliance risk.
Nathan Trust assists Irish companies with:
Speak to our team today to ensure your company documentation remains fully compliant.