Marriage Tax Calculator Ireland 2026
Compare Single Treatment, Separate Assessment, and Joint Assessment side-by-side. Calculate your exact household tax savings, rate band transfers, and credit pooling.
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Couple Details & Incomes
Disclaimer: This calculator provides estimates only and does not constitute professional tax advice. Figures are based on Revenue.ie guidelines for tax year 2026. Individual circumstances vary — always consult a qualified tax advisor for advice specific to your situation.
Revenue.ie Statutory Rates
Calculations strictly align with the Finance Act 2025/2026 and official rate schedules published by the Irish Revenue Commissioners.
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Formulas designed and verified by a qualified Chartered Accountant (ACA) for Marriage Tax Calculator.
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Elected Joint Assessment will save your household €1,800 per year (€150/month) in income tax.
Side-by-Side Tax Comparison (2026 Statutory Rules)
| Tax Category | Single Treatment | Joint Assessment | Difference |
|---|---|---|---|
| Standard Rate Band (20%) | €64,000 | €73,000 | +€9,000 band |
| Income Tax (Net of Credits) | €17,200 | €15,400 | -€1,800 |
| USC (Individual statutory rate) | €2,250 | €2,250 | €0 (No change) |
| PRSI (Class A/S statutory rate) | €3,791 | €3,791 | €0 (No change) |
| Total Household Tax | €23,242 | €21,442 | -€1,800 |
| Net Take-Home Pay | €71,758 | €73,558 | +€1,800 |
How the Revenue Band & Credit Transfer Operates
Under Section 1019 of the Taxes Consolidation Act 1997, Revenue permits the higher earner to access up to €9,000 of additional standard rate band (taxed at 20% instead of 40%), resulting in up to €1,800 in direct tax relief (20% differential on €9,000).
Up to €9,000 transferred to higher earner. The remaining €35,000 second-earner band is non-transferable.
Pooled between spouses. If one partner does not have enough income tax to absorb €2,000, the remainder offsets the other spouse's tax.
How to Elect Joint Assessment on Revenue myAccount
- Log into Revenue myAccount at revenue.ie.
- Go to "Manage My Record" > "Civil Status" and declare your marriage or civil partnership.
- Select "Joint Assessment" and nominate the assessable spouse.
- Revenue will immediately update both tax credit certificates (RPNs) electronically for your employers.
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Understand Your Tax Better
Marriage Only Cuts Your Tax When Your Incomes Are Uneven
This is the part most couples get wrong. Getting married does not reduce your tax by itself. What Joint Assessment does is let one spouse use part of the other's unused standard rate band and credits. If neither has anything spare, nothing moves and nothing is saved.
A single person pays 20% on the first €44,000 and 40% above it. Under Joint Assessment the higher earner's band can rise to €53,000, a transfer of up to €9,000, while the lower earner keeps a band of up to €35,000 capped at what they actually earn. The most that can sit in the 20% band across a couple is €88,000.
| Couple's incomes | Saved per year | Why |
|---|---|---|
| €75,000 and €20,000 | €1,800 | Unused band transfers to the higher earner |
| €50,000 and €0 | €3,200 | Band and the full married credit both transfer |
| €60,000 and €60,000 | €0 | Both already use their full band and credits |
The single-earner case saves most because two things transfer at once: the band, and the full married personal credit of €4,000 that would otherwise be wasted. Two equal earners on €60,000 each save nothing at all, because both already use their entire band and credits.
Your Three Assessment Options
Joint Assessment
You are treated as one tax unit and one spouse is nominated as the assessable spouse, receiving the credits and bands. This is the default once Revenue knows you are married, and it is the option that captures any available saving. You file one return between you.
Separate Assessment
Credits and bands are divided between you and you are each assessed on your own income, but any unused portion is transferred to the other spouse after the year ends. The couple's total liability works out the same as Joint Assessment. Some couples prefer it because each person's affairs stay separate.
Single Treatment
You are each taxed as though you were not married, with no transfers at all. This is the only option that can genuinely leave money on the table, and it is worth checking you have not been left on it by accident after marrying.
The Home Carer Credit and Key Dates
If one spouse stays at home to care for a child or a dependent relative, a jointly assessed couple can also claim the Home Carer Tax Credit, worth €1,950 in 2026. The carer's own income must be €7,200 or less for the full credit, with a reduced credit up to €11,100. Carer's Allowance is not counted in that income test.
The deadline to elect for a different assessment basis so that it applies to the current tax year. Miss it and your election takes effect the following year.
You are taxed as single people for that year, but you can claim a refund of the difference if joint treatment would have been cheaper, apportioned from the date of marriage.
If you have been on the wrong basis, the usual four-year rule applies, so you can review back to 2022 and reclaim what you overpaid.
Read more in our guides to marriage tax credits and the Home Carer Credit.
Frequently Asked Questions
How does Joint Assessment work for married couples in Ireland?
Under Joint Assessment (TCA 1997 Section 1019), a married couple or civil partners are treated as a single tax unit. The primary earner can receive a standard rate band of up to €53,000 (an increase of €9,000 over the single band of €44,000). The second spouse retains an additional band of up to €35,000 (capped at their earnings), giving a maximum joint 20% band of €88,000. In addition, unused Personal Tax Credits (€4,000 married credit) transfer automatically between spouses.
Do both spouses save tax if they both earn over €44,000?
No. If both spouses earn €44,000 or more, both are already utilising the full 20% standard rate band and personal credits. Joint Assessment yields €0 additional tax savings compared to single treatment. The tax benefit only arises when one spouse earns under the standard rate cutoff or stays at home.
How much is the Home Carer Tax Credit in Ireland for 2026?
The Home Carer Tax Credit is €1,950 for 2026. It is available to jointly assessed married couples where one spouse cares for a dependent person (such as a child or elderly relative) and the carer's personal income is €7,200 or less. A reduced credit is available if income is between €7,200 and €11,100.
How do we switch to Joint Assessment with Revenue?
You can elect for Joint Assessment by logging into Revenue myAccount, navigating to 'Manage Your Tax 2026' or 'My Profile', and updating your civil status to Married. You nominate one spouse as the assessable spouse. Elections must be submitted before 31 March of the tax year to apply for that year.
What happens in the year we get married?
For the year of marriage you are both taxed as single people. If being jointly assessed for that year would have produced a lower bill, you can claim the difference back as a Year of Marriage refund, apportioned from the date of marriage to the end of the year. From the following year onwards, Joint Assessment applies if you elect for it.
Is Joint Assessment always the best option?
Not always, but it is rarely worse. If both spouses earn above the standard rate band there is no difference. Separate Assessment splits credits and bands between you while keeping the couple's overall liability the same as Joint Assessment, and some couples prefer it for privacy. Single Treatment, where you are taxed as two unconnected individuals, is the option that can genuinely cost you money.