An Irish LTD can give a builder, tradesperson or construction team a separate entity for contracts, equipment, workers and payments. The incorporation is only the first layer. Before pricing work, the business must know whether it will act as a main contractor, subcontractor, developer or direct supplier to homeowners because RCT, VAT, safety and contractual obligations differ.
This guide connects CRO formation with the practical systems a construction company needs before its first job. It is general information rather than legal, tax, safety or engineering advice, and individual projects may have additional planning, building-control, public-procurement or professional requirements.
Define the company's role before registering for tax
Write down who contracts with the customer, who hires subcontractors, who supplies materials and whether projects are commercial, public-sector or domestic. The same company may be a principal on one contract and a subcontractor on another, so its invoicing and Revenue processes must recognise each role.
Is an Irish LTD suitable for a construction business?
A private company limited by shares is a separate legal person. It can enter building contracts, employ workers, own tools and vehicles, purchase materials and invoice customers. Shareholder liability is generally limited to unpaid share capital, but directors can still face duties and personal exposure through guarantees, unsafe practices, wrongful conduct or other legal exceptions.
Compare an LTD with operating as a sole trader using realistic figures for accounting, insurance, payroll, equipment finance and compliance. Incorporation does not transfer an existing contract, vehicle or tool automatically; any move from an existing business should be documented with tax and legal advice.
Construction-company formation requirements
- An available company name and an LTD constitution.
- A physical registered office address in Ireland.
- At least one director aged 18 or older.
- A company secretary who is separate from a sole director.
- At least one EEA-resident director or an available statutory alternative.
- Shareholder, share-allocation and beneficial-owner information.
- PPSN information or the applicable CRO identity-verification and IPN route.
- A truthful principal activity and appropriate NACE classification.
The CRO's required-steps guidance explains the information recorded on Form A1. A non-resident team with no EEA-resident director should examine the Section 137 bond route before filing.
Describe the trade and contracts accurately
State whether the company builds, renovates, fits out, installs electrical or plumbing systems, paints, roofs, manages projects or provides another defined service. A precise activity description helps the CRO, Revenue, insurers, banks and customers understand the business. Do not claim regulated qualifications or professional status the company and its people do not hold.
If the company carries several trades, document who is competent to supervise and perform each one. Tender requirements, public works, specialist installations and protected titles can create conditions beyond basic company registration.
Know whether the company is principal or subcontractor
Relevant Contracts Tax is a deduction-at-source system for payments under relevant construction contracts. Revenue describes a principal contractor as a business that uses a subcontractor to carry out construction activities on its behalf. A business is not a principal merely because it commissions work on a building used only by itself or its employees, subject to the detailed rules.
A subcontractor is a business engaged under a relevant contract that is not an employment contract. The subcontractor gives its correct Revenue name and Tax Reference Number to the principal. The commercial contract should clearly identify the scope, price, materials, programme, variations, certification, insurance and payment process.
RCT duties for principal contractors
A principal must register with Revenue and operate RCT electronically through ROS. Revenue's principal-contractor guidance requires notification of relevant contracts and payments, provision of deduction details, submission of deduction summaries and payment of tax withheld.
The principal must use the deduction authorisation issued by Revenue. It should not guess the rate or pay before completing the required notification. Revenue currently uses 0%, 20% and 35% rates based on the subcontractor's compliance position. Mistakes can produce tax, interest and penalties, so set up the ROS workflow before the first subcontractor payment.
RCT is not a substitute for PAYE
A written subcontractor agreement does not decide whether a worker is genuinely self-employed. Revenue says the principal must consider the real arrangement, including personal service, control and all the surrounding facts. Incorrectly treating an employee as an RCT subcontractor can leave the company liable for PAYE, PRSI, USC, interest and penalties.
Review employment status before onboarding each person. Employees should go through payroll and receive the workplace protections that apply to them. Independent subcontractors should have a real business arrangement, suitable insurance, tax details and responsibility consistent with the contract.
Construction VAT and reverse charge
Revenue states that construction services include building, extension, alteration, demolition, electrical, plumbing, plastering, heating, painting, roofing and flooring work. Supplies that are not within the RCT reverse-charge system follow the applicable normal VAT rules; for example, a builder supplying an extension directly to a private customer normally charges and accounts for VAT.
Where a subcontractor supplies construction services to a principal contractor and RCT applies, the principal generally accounts for VAT under the reverse charge. The principal pays on a VAT-exclusive basis and accounts for VAT on the full VAT-exclusive consideration, including any RCT withheld. Revenue's construction VAT guidance should be checked for the current rate and treatment of each contract.
Safe Pass and workplace safety
The Health and Safety Authority states that Safe Pass applies to craft and general construction workers, apprentices, working chargehands and specified on-site roles. Safe Pass is a one-day awareness programme and is renewed every four years. It does not replace the employer's duty to provide the information, instruction, training and supervision needed for the actual work.
Before work starts, assess project risks, prepare the required safety documentation, confirm competence, provide equipment and training, and understand the client, designer, contractor, PSDP and PSCS roles where relevant. Use the HSA's Safe Pass guidance and obtain competent safety advice for each site.
Insurance, contracts and cash flow
Discuss public liability, employers' liability, contractors-all-risks, tools, vehicles and professional indemnity with a broker familiar with the work. Required cover depends on the trade, project and contract. Check exclusions, subcontractor conditions, height or excavation limits and notification duties instead of relying only on the policy headline.
Construction cash flow is vulnerable to retentions, variations, delayed certification, material deposits and RCT deductions. Price the full labour, materials, plant, waste, insurance, tax and finance costs. Written variation and payment procedures reduce disputes, but project-specific contracts should be reviewed professionally.
Construction-company launch checklist
- Define the trades, customer types and principal/subcontractor roles.
- Choose the company name, officers, shares and Irish registered office.
- Complete identity requirements and incorporate the LTD.
- Register beneficial ownership and the applicable Revenue taxes.
- Set up ROS, RCT notifications and VAT invoicing before relevant payments.
- Confirm employee versus subcontractor status and register payroll where needed.
- Arrange appropriate insurance, safety systems and site competence.
- Use written contracts, variations and payment controls.
- Implement job costing, bookkeeping and compliance calendars.
Form the company before the first contract is signed
The legal entity, Revenue registration and site systems should agree from the beginning. StartCompany.ie can prepare the Irish LTD and selected post-incorporation services while the company's accountant, solicitor and safety advisers cover its projects. Compare formation packages or tell us where the directors live so we can identify the suitable route.