Getting married or entering a civil partnership means Revenue has to decide how to tax the two of you, and joint vs separate assessment in Ireland is a choice that is easy to miss. Joint assessment is the default, and Revenue describes it as the option that benefits most couples. This post gives the 2026 bands, the Budget 2027 changes, three worked examples and the deadlines for switching.
Key takeaways for married couples and civil partners
- Joint assessment is the default, and Revenue describes it as the option that benefits most couples.
- For 2026 the married standard rate band is €53,000 with one income and up to €88,000 with two, because the increase for the second income is limited to the lower income or €35,000.
- Joint and separate assessment give the same total tax once unused credits and band are transferred. Separate treatment cost €1,800 more in our first example and €3,800 more in the sole-earner example.
- Separate assessment must be requested between 1 October of the previous year and 31 March; separate treatment within the tax year, and neither can be backdated.
- For 2027 the figures rise to €55,500, up to €93,000, and a married credit of €4,250.
What is the difference between joint and separate assessment in Ireland?
Under joint assessment, Revenue taxes your combined income and you can share credits and the rate band. Under separate assessment, each of you files and is taxed as a single person but can still transfer unused credits and band. Under separate treatment, you are taxed as two single people with no transfers.
| Option | How you are taxed | Credits and band | When to ask |
|---|---|---|---|
| Joint assessment | Combined income; one assessable spouse files | Most credits and the band can be shared | Election before 31 December of the tax year |
| Separate assessment | Two returns, each taxed as a single person | Unused credits and band can be transferred | 1 October to 31 March |
| Separate treatment | Each taxed as a single person | No transfers at all | Within the tax year, through MyEnquiries |
If you make no choice, the spouse or civil partner with the higher income becomes the assessable spouse, who files the return and pays any tax due. You can nominate either of you on or before 31 March in the year it should apply, as Revenue explains on its joint assessment page.
What are the tax bands and credits for married couples in 2026 and 2027?
In 2026 a married couple with one income pays 20% on the first €53,000, and with two incomes on up to €88,000, then 40% on the rest. The married tax credit is €4,000. Budget 2027 lifts these to €55,500, up to €93,000 and €4,250 for 2027.
| Item | 2026 | 2027 |
|---|---|---|
| Single person, 20% band | €44,000 | €46,500 |
| Married, one income, 20% band | €53,000 | €55,500 |
| Married, two incomes, 20% band (maximum) | €88,000 | €93,000 |
| Increase for second income: lower income or | €35,000 | €37,500 |
| Married or civil partner tax credit | €4,000 | €4,250 |
| Employee tax credit (each) | €2,000 | €2,125 |
These are the tax brackets in Ireland for 2026 as set out by Revenue and Citizens Information, with the Budget 2027 announcements alongside. The increase for a second income cannot be transferred between you, and neither can the employee credit. USC and PRSI are charged on each person’s own income, so marital status does not change them; our post on income tax credits covers the rest of the credits.
Which saves a couple more: joint assessment, separate assessment or separate treatment?
Joint and separate assessment give the same total tax once unused credits and band are transferred. Separate treatment was not cheaper in any of the three examples below, and it cost more whenever one partner earned less than €44,000. The extra cost was €0, €1,800 and €3,800.
The examples use 2026 rates, the €4,000 married credit under joint assessment, and a €2,000 personal credit plus a €2,000 employee credit for each person under separate treatment.
| Incomes | Joint | Separate assessment | Separate treatment | Extra cost |
|---|---|---|---|---|
| €70,000 and €30,000 | €15,400 | €15,400 | €17,200 | €1,800 |
| €60,000 and €50,000 | €18,400 | €18,400 | €18,400 | €0 |
| €70,000 and no income | €11,400 | €11,400 | €15,200 | €3,800 |
In the first row the partner on €30,000 leaves €14,000 of the €44,000 band unused. Under separate treatment that band is lost. Under joint or separate assessment up to €9,000 of it moves to the higher earner, saving €1,800 at the 40% rate. In the second row both earn more than €44,000, so there is nothing to move. In the third, the lost band and the unused personal credit add up to €3,800.
Revenue warns that separate treatment may mean a couple pays more tax overall if either of you cannot use all your credits, reliefs or rate band. Any married couple tax calculator in Ireland should therefore be run on all three bases before you decide.
When does separate assessment make sense?
Separate assessment makes sense when you want your own return and your own tax payments but still want unused credits and band to move between you. It does not reduce the total tax. It can suit couples where one spouse is self-employed or where finances are kept apart.
Revenue’s own example shows that separate assessment alone does not change the calculation, because the saving comes from moving unused band. If you both work on PAYE and share finances, joint assessment is simpler and gives the same answer.
How does this play out for two Dublin salaries or a Kerry farm and a PAYE job?
Two Dublin salaries that each top €44,000 use their full bands, so the choice makes no difference to the tax. It only starts to matter when incomes are uneven. Dublin couples who want the figures checked can speak to a tax advisor in Dublin without leaving the house.
A Kerry couple where one partner farms or runs a shop as a sole trader and the other is on PAYE is still taxed under joint assessment. Revenue allows most of the self-employed partner’s tax to be paid through credits transferred from the PAYE partner, but the employee credit itself cannot move. If you are in Kerry, an accountant in Kerry can work through this fully online with you, and the rules are the same nationwide.
How do you change your assessment basis?
- Sign in to myAccount, open My Profile and update your civil status. For separate assessment your spouse must then confirm the change in their own myAccount.
- Alternatively, send a request through MyEnquiries in myAccount and upload any supporting documents.
- Mind the dates: a joint assessment election before 31 December of the tax year, separate assessment between 1 October and 31 March, and separate treatment within the tax year.
- To transfer rate band under separate assessment, complete an Income Tax Return (Form 12) in myAccount and send the request.
- Check your new Tax Credit Certificate once Revenue has processed it.
Revenue sets out how separate assessment and separate treatment work, with its own worked examples.
Should you do this yourself or get help?
A couple who both work on PAYE can usually manage this in myAccount in an evening. Help is worth having when one of you is self-employed, you have rental income, or you are changing basis part-way through a year. Your tax returns then carry both incomes, and an error in the allocation can leave you paying more than you need to or owing a balance.
Our guide to PAYE tax in Ireland explains how credits reach your payslip, and Fuchsia Bell, chartered accountants in Castlemaine, Co. Kerry, run by Gero O’Connor, prepares the income tax return when the PAYE system is not enough.
Frequently Asked Questions
Is joint assessment better than separate assessment?
Neither lowers the total tax on its own. Joint assessment is the default and Revenue says it benefits most couples. Separate assessment gives the same tax once you transfer unused credits and band, but keeps two returns. Choose it for administrative reasons, not to save tax.
Can I switch from joint to separate assessment mid-year?
You can ask, but the dates are fixed. Separate assessment must be requested between 1 October of the previous year and 31 March of the year it applies, and separate treatment within the tax year. Neither can be backdated, and both stay in place until someone asks to change.
What is the married tax credit in 2026?
The married couple or civil partnership tax credit is €4,000 in 2026, and Budget 2027 raises it to €4,250 for 2027. Each working spouse also gets their own €2,000 employee credit in 2026, which cannot be transferred to the other spouse.
Who is the assessable spouse?
The assessable spouse files the return and pays any tax due under joint assessment. If you do not choose, the spouse or civil partner with the higher income is treated as the assessable person. You can nominate either of you on or before 31 March in the year the choice should apply.
Can I claim the Home Carer Tax Credit with the increased rate band?
No. Revenue says you cannot claim the Home Carer Tax Credit and the increased standard rate band together, so you have to pick whichever is worth more to your household. If you are not sure which that is, contact Revenue before you claim either.
Where one of you has just started working for yourself, or you are switching basis part-way through a year, a chartered accountant can run the figures both ways before you ask Revenue for anything, which costs less than a year of overpaid tax.
