Tax for Portuguese Workers in Ireland: Refunds Now, and Getting the Return Right

What being an EU citizen changes — and what it doesn't

You need no permit and no stamp, and you can start work as soon as you have a PPSN.

For Irish tax, that changes little. Residence here is decided by days: 183 or more in a tax year, or 280 across the current and previous year provided you were here more than 30 days in the current one. Citizenship isn't part of the test. You get the same credits, rate bands and reliefs as an Irish citizen — and the same obligation to claim them, because none apply automatically. Revenue's rules are on its tax residence page.

The difference that costs people most: Ireland has no annual reconciliation by default. There's no equivalent of filing your IRS return each spring as a matter of course. Ireland deducts PAYE in real time and then stops. If you're owed money, nobody calculates it and nobody sends it. You have four years to ask.

Your departure year is your biggest refund

Irish payroll spreads your tax credits and rate band evenly across twelve months, assuming you'll work all of them. Leave in June and you've earned in six — but your liability is calculated on your real annual income against a full year's credits.

Say you're on €52,000 — €4,333.33 a month — and you leave at the end of June, having earned €26,000 in Ireland.

What was deducted:

What you actually owed. Your €26,000 sits entirely inside the €44,000 standard rate band, so none of it should have attracted 40% tax at all:

Refund: €2,800 — before adding a single relief.

Split Year Treatment is what keeps it that way. If you take a job in Portugal for the rest of the year, that Portuguese employment income would otherwise come into the Irish computation as worldwide income. Split Year Treatment excludes post-departure employment income while leaving you the full year's credits. Since the Finance Act 2024, you self-assess and claim it in your Income Tax Return for the year of departure. The mechanics are in leaving Ireland and the refund you might be owed.

Note the word employment. It doesn't shelter Portuguese rental income, investment income or directorship income.

Before you go back: what Portugal is now offering

This is the part worth knowing early, because it constrains your timing.

The Non-Habitual Resident regime that many Portuguese emigrants planned around has closed to new applicants, following a transitional period that ended on 31 March 2025. Anyone already registered keeps their existing benefits for the remainder of their ten-year period.

Its replacement is IFICI — Incentivo Fiscal à Investigação Científica e Inovação, widely called NHR 2.0. It offers a flat 20% rate on qualifying Portuguese employment and professional income for up to ten years, but it is deliberately narrower: it targets scientific research, technology and other designated high-value sectors, with academic and professional criteria attached. Retirees and passive-income cases are no longer covered.

Two entry conditions matter enormously for someone sitting in Dublin:

• You must not have been Portuguese tax resident in the preceding five years. How long you've been away is part of the eligibility test, so the year you return is not a neutral choice.
• Having previously used the old NHR regime, or the Programa Regressar, disqualifies you. Regressar — the returning-resident scheme offering 50% relief on employment income — and IFICI are alternatives, not a sequence. Using one closes the other.

So a Portuguese professional in Dublin genuinely has a decision to make, and it has a date attached rather than just a destination.

We're describing the landscape, not advising on it. These are Portuguese regimes governed by Portuguese law, IFICI is new enough that administrative practice is still settling, and the details reported by different sources are not always consistent. Take this to a Portuguese contabilista before you commit to a return date — but take it to them early, because by the time you've booked the movers the five-year clock has already decided some of it for you.

What to claim while you're still here

Reliefs are worth your marginal rate — 40% for most people reading this — and all of them have to be claimed.

Pension and AVCs are the largest lever. Relief runs at your marginal rate on contributions up to an age-related percentage of earnings — 15% under 30, then 20%, 25%, 30%, 35%, and 40% from 60 — subject to an earnings cap of €115,000. A €5,000 contribution at the higher rate costs you €3,000. Relief applies to income tax only, not USC or PRSI. See AVC and pension tax relief.

The Rent Tax Credit — up to €1,000 a year from 2024, €500 for 2022 and 2023, doubled for jointly assessed couples. See the Rent Tax Credit guide.

Medical expenses at 20%, remote working relief as a deduction worth 40% to you, and joint assessment if your partner earns significantly less — Ireland taxes individuals, so this has to be elected.

The full list is in the top Irish tax deductions you could be missing.

If your package includes shares

RSUs are taxed twice, under two regimes. At vesting, market value is employment income taxed through payroll at your marginal rate with USC and PRSI. That value becomes your base cost, and growth after vesting is a capital gain at 33% on sale.

Paying and filing are separate obligations. CGT on disposals from January to November is payable by 15 December of the same year; December disposals by 31 January. But the return — Form CG1 for a PAYE employee — isn't due until 31 October of the following year, and you must file it even when no tax is due, including years where the €1,270 annual exemption covered everything or you made a loss. Late filing carries a surcharge of 5% up to two months, 10% beyond.

This matters especially if you're leaving. Unvested equity, a final vest after your departure date, or shares sold from Portugal in the year you moved all need handling deliberately — and it's much easier while you still have access to your equity platform. The CGT mechanics are set out in crypto tax in Ireland; they're identical for shares.

Share options changed in 2024. Gains from 1 January 2024 are taxed through payroll. For exercises before that date, a Form RTSO1 and payment were due within 30 days of exercise, with interest at 0.0219% per day. 2022 and 2023 remain open years.

If you kept property in Portugal

Ireland and Portugal have a double taxation agreement, so the same income shouldn't be taxed twice — but relief operates on claim, not automatically.

If you rent out an apartment in Lisbon or Porto while Irish tax resident, that rental profit can be within the Irish net as well as the Portuguese one. A foreign tax credit is available for Portuguese tax paid, but you have to claim it and evidence it — ideally with documentation from the Portuguese tax authority — and it's capped at the Irish tax attributable to that income.

And the point that grows with time: after three consecutive years of Irish residence you become ordinarily resident from the start of year four, which brings disposals of assets wherever located within Irish CGT — including Portuguese property. That status continues for three years after you stop being resident, so returning to Portugal doesn't end it immediately. If you're planning to sell property around the time you move, the sequencing matters. See moving to Ireland: how cross-border taxes work.

If you have Irish employment income, share proceeds, Portuguese property and a return date in the same conversation, that's exactly what our VIP Premium service is for.

What you need before you claim

• Your PPSN and myAccount access.
• Your IBAN entered in your Revenue profile — refunds are paid by transfer only, and this is the single most common reason a refund stalls after someone has left.
• Your Employment Detail Summary for each year, from myAccount. Built from what employers reported directly, so you don't need old payslips.
• Your exact departure date, for the Split Year Treatment claim.
• Your full share scheme history — export it before you lose platform access.
• Portuguese rental accounts and evidence of Portuguese tax paid.
• Your RT number and landlord details for the years you rented here.

If you'd rather have all four open years handled properly before you go, our Tax Back service does the full review. No refund, no fee.

Four years, and one deadline

You can claim back four years. As of 2026 that's 2022, 2023, 2024 and 2025 — and 2022 closes permanently on 31 December 2026.

Do the whole review before you leave, not after. Once your Irish bank account closes and your documents are in a box in Porto, a claim that would have taken an evening becomes a project. myAccount works from anywhere; a closed Irish account does not.

Questions we get asked

When should I go back, from a tax point of view?

That's genuinely a question with a Portuguese answer and an Irish one. On the Irish side, leaving part-way through a year produces the largest refund and Split Year Treatment protects it. On the Portuguese side, IFICI requires five years of non-residence and is closed to anyone who has used NHR or Regressar. Those two clocks don't necessarily point at the same date — work it out before you commit, with a Portuguese adviser on the Portuguese half.

I'm registered under the old NHR. Does that still work?

Those already registered continue under their existing terms for the balance of the ten-year period. What's closed is new entry. But it also means you can't later switch into IFICI — the regimes are alternatives.

I rent out my flat in Portugal. Do I declare it in Ireland?

If you're Irish tax resident, yes — foreign rental income can be within scope here alongside Portugal. The treaty and a foreign tax credit prevent double taxation on the same profit, but the credit must be claimed, evidenced, and is capped at the Irish tax on that income. Split Year Treatment won't shelter it — that covers employment income only.

I have RSUs vesting after I leave Ireland. What happens?

It depends on where the duties relating to that vest were performed and on your residence position at the relevant times — which is why this needs looking at before you go rather than after. Vests straddling a move are one of the more common places people get an unwelcome surprise.

Can I still claim my Irish refund once I'm back in Portugal?

Yes, within four years of the end of each tax year, and myAccount works from anywhere. The practical obstacle is a closed Irish bank account, so update your payable details before you file.

If a return to Portugal is anywhere on your horizon, start with the date rather than the paperwork. The date determines what's still available to you on both sides.

Related reading

• Leaving Ireland and the refund you might be owed
• Moving to Ireland: how cross-border taxes work
• AVC and pension tax relief