Income tax in Ireland is administered by the Revenue Commissioners, usually shortened to Revenue. Most employees pay through the PAYE system, where tax is deducted from wages before they are paid. People with other income may need to register for self-assessment and file an annual return. This guide explains the basics.
How is income tax collected in Ireland?
For most workers, income tax is collected at source through Pay As You Earn (PAYE). Your employer deducts income tax, along with related charges such as PRSI and the Universal Social Charge, from each paycheck and pays it to Revenue on your behalf. This means many employees never have to make a separate payment for tax on their salary.
PAYE also covers occupational pensions paid through a former employer or pension provider. Because deductions happen automatically, a purely PAYE taxpayer often has little to do beyond checking that their credits and reliefs are recorded correctly through Revenue's online service, myAccount.
Your take-home pay under PAYE reflects your personal tax credits and rate bands, which Revenue applies through your employer. Reviewing these each year is worthwhile, because a change in your circumstances — marriage, a new job, or claiming a relief you are entitled to — can affect the amount deducted. Keeping your details current with Revenue helps ensure the right amount is taken over the year rather than leaving a balance to settle later.
Who must file a self-assessment return?
Self-assessment means you calculate and report your own income, rather than relying only on deductions at source. In Ireland, whether you file depends largely on the type and amount of income you have outside PAYE.
Revenue distinguishes between two main return forms:
- Form 11 is generally used by people with significant non-PAYE income, including many self-employed individuals, company directors, and those with substantial rental or investment income. It is a full self-assessment return.
- Form 12 is generally used by PAYE taxpayers who have smaller amounts of additional income and are not treated as chargeable persons under self-assessment.
Revenue sets specific income thresholds that determine which form applies and whether you are a chargeable person. Because those figures can change, confirm the current thresholds directly with Revenue before deciding how to register or file.
What are the key deadlines?
Ireland operates a combined "Pay and File" system for self-assessment. Under it, you both file your return for the previous year and pay any balance due, and often a preliminary payment toward the current year, by the same annual deadline.
The Pay and File deadline falls in the autumn, with a paper deadline and a later extended date for those who both file and pay through Revenue's Online Service (ROS). The exact dates are set by Revenue each year, so check the current year's deadline on the Revenue website rather than relying on a fixed date. Missing the deadline can lead to surcharges and interest.
If you are registered for self-assessment, it is sensible to keep records of your income and any allowable expenses throughout the year rather than gathering them at the last minute. Good record-keeping makes filing through ROS more straightforward and gives you time to confirm any figures with Revenue or a qualified professional before the deadline arrives.
Key points at a glance
| Topic | What to know |
|---|---|
| Authority | Revenue Commissioners (Revenue) |
| Employee system | PAYE — tax deducted at source |
| Self-employed/other income | Self-assessment via Form 11 |
| Smaller extra income (PAYE) | Often reported via Form 12 |
| Online services | myAccount and ROS |
| Filing model | Pay and File, once a year in autumn |
Confirm the current rates, credits, thresholds, and deadlines with Revenue, as these are reviewed regularly.
Where to get help
If your situation is unclear — for example, you have mixed income, work across borders, or are unsure whether you are a chargeable person — it can help to speak with a qualified professional. You can find recognized professional bodies for Ireland to identify accredited practitioners.
Sources
Revenue Commissioners (Revenue), the national tax authority of Ireland — including guidance on PAYE, self-assessment, Form 11, Form 12, and Pay and File deadlines. Always verify current figures and dates on the official Revenue website.