2026 Pay and File dates at a glance
Why are there two different deadlines?
Ireland's self-assessment system has a standard Pay and File date of 31 October. For 2026, Revenue has confirmed an extension to Wednesday 18 November 2026 for qualifying customers using the Revenue Online Service (ROS).
The later date is not simply an extra filing window for everyone. Revenue's 2026 extension states that, where payment is due, the customer must use ROS to both file the 2025 Form 11 and make the appropriate payment. Where only one of those actions is completed through ROS, the standard 31 October date applies.
What do you have to do under Pay and File?
By the applicable deadline, a self-assessed taxpayer generally has three linked obligations:
- file the 2025 Income Tax Return (Form 11);
- pay any balance of Income Tax due for 2025; and
- pay Preliminary Tax for 2026.
This is why the deadline can involve more than simply pressing submit on a tax return. A person can have a 2025 balancing liability and a separate 2026 Preliminary Tax requirement at the same time.
Who may need to file a Form 11?
Form 11 is the annual Income Tax return used by people within self-assessment. Revenue says you should register for self-assessment where, for example, you are self-employed or your main income is rental, investment, foreign or other non-PAYE income.
Revenue also states that a PAYE taxpayer must register for self-assessment where taxable non-PAYE income exceeds €5,000, or gross non-PAYE income exceeds €30,000. Proprietary directors are also generally chargeable persons and are required to file Form 11.
If your non-PAYE income is below the self-assessment thresholds, you may instead be able to declare it through a PAYE Income Tax Return in myAccount. The correct return depends on your individual facts.
Does the 18 November extension apply if I use ROS?
Using ROS is central to the extension, but the key point is the combination of filing and payment. Revenue eBrief 034/26 states that the 18 November date applies to customers who file their 2025 Form 11 and make the appropriate payment through ROS for:
- the Income Tax balance due for 2025; and
- Preliminary Tax for 2026.
If you are relying on the extension, do not assume that filing electronically while making the relevant payment outside ROS will preserve the later date.
What happens if the return is filed late?
Revenue can apply a surcharge to a late self-assessment return. Revenue's current guidance states that a return filed less than two months late may attract a surcharge of 5% of the tax due, capped at €12,695. Where the return is more than two months late, the surcharge may be 10% of the tax due, capped at €63,485.
Late or insufficient tax payments can also give rise to interest. The consequences depend on the payment involved, so a late filing position should be reviewed rather than assuming the only cost is the return surcharge.
What should you prepare before filing?
A straightforward filing is much easier if the information is assembled before opening the return. Depending on your circumstances, this may include:
- self-employment accounts or income and expense records;
- rental income and deductible expense details;
- PAYE income and pension information;
- foreign income, investment income and relevant foreign tax details;
- pension contributions and other relief claims;
- details of disposals that may need to be reported; and
- the information needed to calculate a reasonable 2026 Preliminary Tax payment.
Do not leave information gathering until the final day. A missing rental statement, foreign income figure or pension certificate can turn a simple return into a last-minute filing problem.
31 October or 18 November — which date should you work to?
If you are not certain that you satisfy the ROS extension conditions, the safer working assumption is 31 October 2026. If you are filing and making the appropriate payment through ROS, the confirmed extended date is 18 November 2026.
In practice, it is sensible to prepare the return well before either date. That gives time to check the tax computation, consider Preliminary Tax and resolve missing information before payment is due.
Need help reviewing your 2025 Irish tax position?
TaxComply's Personal Tax Review is designed to make the process straightforward. We review the information you provide, identify the relevant Irish tax issues and explain the next steps in plain English.
Frequently asked questions
What is the Irish tax return deadline in 2026?
The standard Pay and File deadline for the 2025 Form 11 is 31 October 2026. Revenue has extended the deadline to 18 November 2026 for qualifying customers who use ROS to both file and make the appropriate payment.
What tax year is being filed in 2026?
The Form 11 filed in 2026 is the Income Tax return for the year ended 31 December 2025.
Is the 18 November 2026 deadline automatic?
No. Revenue states that the extension applies where the customer both files the 2025 Form 11 and makes the appropriate Income Tax balance and 2026 Preliminary Tax payment through ROS.
Do I need to pay Preliminary Tax as well as file the return?
Under Pay and File, a self-assessed taxpayer generally files the previous year return, pays any balance for that year and pays Preliminary Tax for the current year.
Is the Capital Gains Tax payment deadline also 18 November?
No. Capital Gains Tax has separate payment rules and dates. The Pay and File extension discussed here relates to the self-assessment Income Tax filing and payment obligations described by Revenue.
This guide is general information and is not a substitute for advice on your individual circumstances. Tax rules and Revenue guidance can change.