SIC Code
sik kohd
Learn what SIC codes are, how to choose the right one for your Irish company, and why this classification matters for CRO filings and business identity.
Learn what SIC codes are, how to choose the right one for your Irish company, and why this classification matters for CRO filings and business identity.
A SIC code, or Standard Industrial Classification code, is a four-digit numerical code used to categorise the primary business activity of a company. In Ireland, every company must provide a SIC code when filing its annual return with the Companies Registration Office (CRO) via CRO Online. The code tells regulators, statisticians, and the public what your company actually does, and it forms part of your company's official record.
For Irish founders, choosing the right SIC code might seem like a minor administrative detail, but it has practical implications for how your company is classified and perceived. Banks, insurers, government agencies, and potential business partners may use your SIC code to assess what industry you operate in, which can affect everything from insurance quotes to grant eligibility. Getting it right at company formation saves you from having to correct it later.
The SIC system used in Ireland is based on the NACE Rev. 2 classification system, which is the standard used across the European Union. Each code corresponds to a specific economic activity, and the system is organised hierarchically from broad sectors down to specific activities. Understanding how to navigate this system helps you select the code that most accurately represents your business.
Choosing the right SIC code starts with identifying your company's primary business activity. If your company has multiple activities, you should select the code that represents the activity generating the most revenue or, if the company is pre-revenue, the activity that best describes your core business purpose. The CRO provides a searchable list of codes, and your company secretary or formation agent can help you identify the most appropriate one.
Common SIC codes for Irish startups include 62010 (computer programming activities), 62020 (computer consultancy activities), 70220 (business and management consultancy), 47910 (retail sale via mail order or internet), and 64209 (activities of other holding companies). If your business does not fit neatly into a single code, choose the one that is closest to your primary activity. You can always update it later if your business model evolves.
The SIC code is required at two key points. First, when you incorporate your company using Form A1, you must specify the principal objects of the company, and the SIC code is part of this classification. Second, the SIC code must be included on your annual return (Form B1) filed with the CRO each year. If you change your business activity, you should update the SIC code on your next annual return to ensure the public record accurately reflects what your company does.
Revenue also uses business activity classifications for tax purposes, though they may use slightly different codes or descriptions. Ensuring consistency between your CRO filings and your Revenue registrations helps avoid confusion and ensures your company registration records are aligned across government bodies.
While the SIC code is primarily an administrative requirement, it has several practical consequences. Insurance providers use your SIC code to assess risk and calculate premiums for business insurance. A code that does not accurately reflect your activities could result in higher premiums or, worse, a claim being denied because your actual activities differ from what your insurer expected based on the code.
Government grants and support programmes often target specific industries identified by SIC code. If your code does not match the eligible categories, you may miss out on funding opportunities that your business would otherwise qualify for. Similarly, company status and industry classification data are used by analysts, journalists, and researchers, so an accurate code ensures your company is properly represented in economic statistics and industry reports.
Yes, you can change your SIC code by updating it on your next annual return filing with the CRO. There is no separate form or application required. Simply select the new code that best represents your current primary business activity when completing the Form B1. The change will be reflected on the public register once the annual return is processed.
Changing your SIC code is common for startups and growing companies whose business models evolve over time. A company that starts as a software development business (62010) might pivot to become a SaaS platform (62090) or expand into consulting (70220). Keeping your SIC code current ensures that your company's public profile accurately reflects its activities and avoids any misalignment with insurers, grant bodies, or other stakeholders who rely on the classification.
Technology startups in Ireland most commonly use codes in the 62xxx range (computer programming, consultancy, and related activities) or 63xxx range (information service activities). E-commerce businesses typically use 47910 (retail sale via mail order or internet), while fintech companies may use codes in the 64xxx range (financial service activities). Professional services firms often use 69xxx (legal and accounting activities) or 70xxx (management consultancy).
If you are unsure which code applies to your business, your company secretary or accountant can advise. You can also search the Central Statistics Office (CSO) NACE code database, which provides detailed descriptions of each code and examples of the activities it covers. The key is to choose the code that most closely matches what your company actually does, rather than what you aspire to do in the future.
Your SIC code and your business name serve different purposes but both contribute to your company's public identity. The company type and business name tell people who you are, while the SIC code tells them what you do. Together, they form the core of your company's profile on the CRO register, which is searchable by the public and used by credit agencies, investors, and government bodies to understand your business.
When incorporating, think about both your company name and SIC code as part of your public identity. A clear, well-chosen SIC code, combined with an appropriate company name and accurate registration details, presents a professional image that supports your credibility with banks, suppliers, and potential partners from the very start of your business journey.
