Ireland has a self-assessment tax system for most taxpayers outside PAYE employment. That means Revenue places the responsibility on you — not your employer — to know your obligations, file on time, and pay what is owed. PAYE employees have tax deducted at source by their employer, but even employees can have obligations around credits, additional income, and annual reviews.
Understanding compliance is not about memorising tax law. It is about knowing which deadlines apply to you, what forms to file, and what documents to keep. This Compliance Centre is designed to make that process straightforward — updated for Budget 2026 and the Finance Act 2025.
You must file a self-assessed income tax return (Form 11 via ROS) if you are:
PAYE employees with only employment income do not generally need to file a return — their tax is collected through the payroll system. However, PAYE employees can and should review their tax position annually to claim credits they are entitled to, such as the Rent Tax Credit, medical expenses relief, and remote working relief.
Before you can file or pay tax, you need to be registered with Revenue for the appropriate taxes. Self-employed individuals register for Income Tax (and PRSI). VAT registration is required if your annual turnover exceeds €40,000 (services) or €80,000 (goods). Employers must register for PAYE Modernisation before taking on their first employee. Companies register for Corporation Tax when incorporated.
Filing means submitting the correct tax return by the deadline. Late filing attracts an automatic surcharge — 5% within two months, 10% thereafter — applied to the tax payable, not the tax owed on a refund. Revenue's Online System (ROS) is the required platform for most business filers. PAYE employees use Revenue MyAccount.
Filing and paying are separate obligations. Even if you file on time, interest accrues at 0.0219% per day (approximately 8% per year) on any unpaid tax from the day after the due date. Preliminary Tax is the mechanism for self-assessed taxpayers to pay their estimated liability in advance — due by 31 October each year.
Revenue can request records dating back six years. Good record-keeping is not just a compliance requirement — it is the foundation of accurate tax returns, and it makes responding to a Revenue audit or query straightforward. Keep all invoices, bank statements, payslips, and receipts. For capital assets (property, shares), keep purchase and disposal records permanently until the asset is sold, then for six years thereafter.
The Irish tax calendar clusters around a few critical dates. The most significant is 31 October — the self-assessment deadline for both filing the Form 11 and paying Preliminary Tax for the current year. Missing this date triggers automatic surcharges. Revenue extends this deadline for ROS users each year, typically to mid-November, but the extension is not guaranteed and the exact date is announced in October.
For employers, the 23rd of each month is the standard ROS deadline for PAYE/PRSI. VAT returns are bimonthly, also due by the 23rd. Capital Gains Tax has two payment dates: 15 December for gains made January to November, and 31 January for December gains.
PAYE employees face a different calendar — the four-year time limit for claiming credits and refunds is the key date to watch. For tax year 2022, the deadline is 31 December 2026.
Irish tax penalties are largely avoidable with planning. Here is what matters most:
First-year self-employed individuals often do not realise they owe Preliminary Tax. In year one, you have no prior year liability to base the payment on — so Revenue expects 90% of your actual year one liability. Many new sole traders pay nothing in October and then face a large bill the following autumn covering two years of tax simultaneously. Plan for this from day one.
The VAT registration thresholds — €40,000 for services, €80,000 for goods — are monitored by Revenue. Once you cross them, you are legally required to register. Revenue can and does issue retrospective VAT assessments. Use the VAT Calculator on this site to monitor your position.
Hundreds of thousands of PAYE workers leave money on the table each year by not claiming credits they are entitled to. The Rent Tax Credit (up to €2,000 single / €4,000 married), medical expenses relief at 20%, and remote working relief (30% of heat, light and broadband costs for home office days) are the most commonly unclaimed. All are claimable through Revenue MyAccount in minutes.
All rental income is taxable. The allowable deductions (mortgage interest on a rental property, rates, insurance, repairs, property management fees, wear and tear on furniture) can significantly reduce the liability — but the income must be declared. Revenue receives data from the Residential Tenancies Board (RTB) and property websites. Undeclared rental income is actively investigated.
Self-employed taxpayers can claim a wide range of legitimate business expenses — travel, equipment, professional fees, marketing, training. But the deduction is only valid if you have documentary evidence (receipts, invoices) at the time of a Revenue audit. Claiming expenses without records is the most common audit exposure for sole traders.
Capital Gains Tax is paid in two instalments — 15 December and 31 January. Many investors and landlords confuse the CGT payment dates with the income tax return deadline. CGT is paid first; the return is filed with the Form 11 or CG1 by the following October.
All Irish tax law is published by Revenue and the Office of the Attorney General. Key sources:
A surcharge applies to the tax payable: 5% (maximum €12,695) if you file within two months of the deadline, or 10% (maximum €63,485) if you file more than two months late. Interest also accrues at 0.0219% per day on any unpaid tax. The surcharge is based on the income tax, USC and PRSI owed — not on any refund due.
Most PAYE employees with only employment income do not need to file a return — their tax is collected through payroll. However, you must file if you have non-PAYE income over €5,000 (rent, freelance, dividends). You should also use Revenue MyAccount annually to claim credits like the Rent Tax Credit, medical expenses, and remote working relief — these are not automatically applied.
Preliminary Tax is your advance payment of income tax, USC and PRSI for 2026, paid by 31 October 2026. You can pay: (a) 90% of your estimated 2026 tax liability, or (b) 100% of your final 2025 liability. Option (b) is safer if your 2026 income is higher than 2025. Use our Preliminary Tax Calculator to estimate the amount.
You must register for VAT when your annual turnover exceeds €40,000 (services) or €80,000 (goods). You can register voluntarily below these thresholds — useful if your clients are VAT-registered businesses who can reclaim the VAT you charge. Register via Revenue Online System (ROS) before you breach the threshold. Retrospective VAT can apply from when you should have registered.
Revenue can audit up to six years back, so the minimum retention period for most records is six years. For capital assets (property, shares), keep acquisition and disposal records for six years after the date of disposal. Employment records must be kept for seven years under employment law. Company records must be kept for six years under the Companies Act 2014 (seven if required by the company's articles).
The surcharge (5% or 10% of tax owed) applies when you file late — it is a penalty for failing to file on time. Interest (0.0219% per day) applies to unpaid tax regardless of when you file — it runs from the day after the payment due date until the date you pay. Both can apply simultaneously if you file late and pay late. Filing on time eliminates the surcharge; paying on time eliminates the interest.
The Compliance Health Score is a self-assessment tool on this page. Answer a few yes/no questions about your current compliance status, and the score gives you a quick picture of where you stand — Excellent (90+), Good (70-89), Needs Attention (50-69), or High Risk (below 50). It does not access any Revenue systems — it is purely based on your answers and is not stored anywhere except your own browser.
Yes — you can claim the Rent Tax Credit even if you pay rent in cash, provided the tenancy is registered with the Residential Tenancies Board (RTB) and you are paying rent to a private landlord. You will need the landlord’s name, address, and PPS number to complete the claim via Revenue MyAccount. The credit is worth up to €2,000 per year (single) or €4,000 (married/civil partners).
This Compliance Centre stores your profile selection and health score answers in your browser’s local storage only. No data is sent to any server. Clearing your browser data will reset all settings. We do not collect, transmit, or share any information entered on this page.
This tool provides general information about Irish tax compliance obligations based on publicly available Revenue guidance and the Finance Act 2025. It does not constitute tax advice. Every taxpayer’s situation is different. Rates, thresholds, and deadlines may change — always verify with Revenue directly or consult a qualified tax professional before making decisions based on the information displayed here.
For personalised compliance advice, the team at d’Emilia Accounting specialises in Irish tax compliance for self-employed individuals, PAYE workers, and small businesses.