Checked against Revenue sources on September 28, 2026.
Ireland split-year treatment is a moving-year tax record question. It is not a general shortcut for every kind of income, and it is not something a day-count app can decide for you.
Short answer: Revenue says split-year treatment can apply in a year of arrival or departure when the official conditions are met. It applies to employment income only. For moves after December 31, 2024, Revenue says split-year treatment may be claimed by filing an Income Tax Return, and Revenue's August 31, 2026 eBrief says 2025 Form 11 details are required where split-year treatment has been claimed against income.
Jetseen helps you track days - always consult a qualified tax professional for advice specific to your situation.
What is Ireland split-year treatment?
Revenue describes split-year treatment as a way to handle employment income in the year someone moves to or from Ireland.
For a year of arrival, Revenue says employment income earned abroad before the arrival date is ignored for Irish tax purposes when split-year treatment applies. Employment income from the arrival date is taxed in the normal way.
For a year of departure, Revenue says employment income earned abroad after the departure date is ignored for Irish tax purposes when split-year treatment applies. Employment income up to the departure date is taxed in the normal way.
That sounds simple until you have to prove the dates.
The useful record is not a vague note that says "moved in March." It is a clean timeline with the arrival date, departure date, employment period, and supporting documents.
When can arrival split-year treatment be requested?
Revenue says split-year treatment in the year of arrival can be requested where:
- you are resident in Ireland in that year
- you were not resident in Ireland in the previous year
- you will be resident in Ireland in the year after arrival
Revenue also says split-year treatment applies to employment income only.
For the arrival file, keep:
- date you arrived in Ireland
- date Irish employment started, if relevant
- dates of foreign employment before arrival
- country where the pre-arrival employment was performed
- travel records around the move
- employer documents or payroll records that show the income period
- advisor notes about whether the official conditions are met
Do not turn those notes into your own conclusion. Give them to a qualified tax professional.
When can departure split-year treatment be claimed?
Revenue says split-year treatment in the year of departure can be claimed where:
- you are resident in your year of departure
- you are not resident in Ireland the following year
Revenue says split-year treatment applies to employment income only. Revenue also says that, depending on the length of time you will spend abroad, you may need a statement from your employer or a copy of your employment contract.
For the departure file, keep:
- date you left Ireland
- date foreign work started, if relevant
- dates of Irish employment before departure
- country where post-departure employment was performed
- travel records around the move
- employer statement or employment contract, where relevant
- advisor notes about the following-year residence position
If there is one place people get sloppy, it is the gap between "left Ireland" and "started living somewhere else." Keep the dates plain.
What changed for moves after December 31, 2024?
Revenue's arrival and departure pages both say that if you moved after December 31, 2024, you may claim split-year treatment by filing an Income Tax Return.
The current filing detail matters because Revenue eBrief No. 127/26, published August 31, 2026, says that where split-year treatment has been claimed against income in 2025, details must be included on the return.
That does not mean everyone should claim it. It means the return record needs facts if a claim is made.
For a 2025 or later file, keep:
| Record | Why it matters |
|---|---|
| Arrival or departure date | It anchors the split-year period |
| Employment-income period | Revenue limits split-year treatment to employment income |
| Income Tax Return notes | Revenue says moves after December 31, 2024 can be handled through the return |
| Form 11 notes, if relevant | Revenue eBrief No. 127/26 flags split-year details for 2025 Form 11 |
| Employer statement or contract | Revenue names these for some departure cases |
If you are not sure which return route applies, stop and ask a qualified tax professional.
What does "employment income only" mean for your records?
It means the income category boundary should be visible in your file.
Revenue's public pages say split-year treatment applies to employment income only. The research pack also flags that the Revenue Tax and Duty Manual treats split-year treatment as an employment-income charging measure.
Do not mix every income source into one note.
Keep separate folders or tags for:
- employment income
- self-employment or freelance income
- investment income
- rental income
- pension income
- advisor conclusions
This guide does not say how those other income categories are taxed. The point is narrower: do not let the employment-income split-year record blur into a full tax-return theory.
What should you track if you moved to or from Ireland?
Start with the timeline.
| Field | What to keep |
|---|---|
| Ireland arrival date | Flight, ferry, booking, or calendar record |
| Ireland departure date | Travel record and destination country |
| Days in Ireland | Country-day log for the year |
| Days outside Ireland | Country-day log around the move |
| Employment period | Start and end dates, employer, location of work |
| Employer documents | Statement, contract, payroll notes, where relevant |
| Return details | Income Tax Return or Form 11 notes for advisor review |
| Professional advice | Keep conclusions separate from raw travel records |
The goal is not to make the tax decision yourself. The goal is to make the facts easy to check.
Where Jetseen fits
Jetseen can help you keep the day record clean before an advisor reviews the Irish tax position.
Use Jetseen to keep:
- Ireland arrival and departure dates
- country-by-country travel history
- employment-period notes
- documents connected to the move
- reminders for return or advisor deadlines
- CSV exports for a tax professional
Jetseen does not determine Irish split-year treatment, prepare Form 11, decide whether you should claim split-year treatment, calculate Irish tax due, or replace Revenue guidance or professional advice.
If Ireland is part of your moving year, Try Jetseen Free for 14 Days and keep the dates tidy before they become hard to reconstruct.
Related Jetseen guides
- Ireland 183-Day Tax Residency Rule: What Counts and What Does Not
- UK SRT Split-Year Treatment: Records To Keep Before Advisor Review
- Rolling Window vs Calendar Year: Why Day Counting Rules Are Different Everywhere
References
- 1RevenueSplit-year treatment in your year of arrival
- 2RevenueSplit-year treatment in your year of departure
- 3Revenue eBrief No. 127/26Income Tax return form 2025 - ROS Form 11
- 4Revenue Tax and Duty ManualSplit year residence - section 822 TCA 1997
Disclaimer: This article is for informational purposes only and does not constitute legal or tax advice. Tax residency rules change frequently. Consult a qualified tax professional for advice specific to your situation.
