You can find the following key information for business on the Irish Point of Single Contact website http://www.pointofsinglecontact.ie/
Starting a Business in Ireland
Tax, Registering a business, Employment Rights, Health and Safety, Establishing a place of business, Closing a Business.
Registering a Business
Companies Registration Office, Procedures for registering your business in Ireland.
Taxation and Social Security
How to register for tax, Revenue online services, Motor Vehicle Registration, Vehicle Registration Tax.
Establishing a Place of Business
Competent Authority, Documentation to be submitted when establishing a place of business
Health and Safety
Competent authority, Managing health and safety, Safety statement and risk assessment, Health and Safety Authority.
Work Place Relations, Employment law.
Funding / Support
Local Enterprise Office, SME online guide to funding supports, Enterprise Ireland, Business Organisations
Provides Table of licences information.
Closing your Business
Administrative procedures involved when closing a business in Ireland.