Rent-a-room relief lets you earn up to €14,000 a year, tax-free, letting a room in your own home. Stay under that figure and income tax, USC, and PRSI all disappear entirely on the money. Go even €1 over it, and the entire amount becomes taxable, not just the excess. Yes, you still have to declare the income on your annual tax return even while it’s fully exempt, a step a surprising amount of online guidance skips or gets wrong.
The €14,000 figure is gross income, not profit. Meals, utilities, laundry, anything the person paying you hands over counts toward it, and none of your own costs, furnishing, wear and tear, insurance, can be deducted against it the way they could under standard rental taxation.
What Actually Counts Toward the €14,000 Limit
Every euro received for the arrangement counts, not just the headline rent figure. A lodger paying €1,000 a month in rent plus €100 a month toward bills and groceries is generating €13,200 a year toward the limit, not €12,000. Declaring the full gross figure, not just the rent portion, on the annual tax returns filing is where people most often understate what actually counts.
The Cliff Edge, Illustrated
The all-or-nothing structure makes the difference between staying just under and going just over dramatically larger than the amount involved would suggest.
| €1,100/month | €1,200/month | |
| Annual gross income | €13,200 | €14,400 |
| Under or over the €14,000 limit | Under | Over |
| Tax treatment | Fully exempt | Fully taxable |
| Approximate tax at combined ~52% | €0 | ≈ €7,500 |
An extra €1,200 a year in rent, charging just €100 more a month, triggers roughly €7,500 in tax once income tax, USC, and PRSI at their combined higher rates are counted. Something with this exact cliff-edge shape is a genuine case for having the figures checked through a proper income tax return review before setting the monthly rate, not after the first year’s income is already locked in.
You Still Have to Declare It, Even Tax-Free
Some guidance online suggests that staying under €14,000 means nothing needs to be done at all. That’s not accurate. Revenue requires the income to be included on the annual return and the relief actively elected, even though the amount owed comes to zero. Treating rent-a-room income as something that never needs mentioning, simply because no tax is due on it, is a real gap between what people assume and what’s actually required.
What Qualifies as a Room, and What Doesn’t
The letting has to run at least 28 consecutive days to qualify, which rules out short-term, Airbnb-style stays under the scheme, with narrow exceptions for arrangements like student accommodation. A self-contained unit, a converted garage or basement with its own entrance, can still qualify provided it’s physically attached to the main house. A fully detached unit doesn’t. Keeping clean, ordinary bookkeeping records of what’s actually received each month, even though none of it is deductible under this scheme, makes the annual declaration considerably easier to get right.
A Second Payment Stream Can Run Alongside It
The Accommodation Recognition Payment scheme, which pays homeowners for housing certain international protection applicants, was reduced from €600 to €400 a month from 1 September 2026, and is currently due to run until 31 March 2027. Payments under this scheme are exempt from income tax, USC, and PRSI in their own right, and someone meeting the conditions for both schemes at once can generally combine them, though the specific expat tax and residency conditions attached to each scheme should be checked separately rather than assumed to line up automatically.
If You’re Renting Rather Than Owning
Property ownership isn’t required. Someone renting their own home can sublet a room under the same rules, provided their lease actually permits it, which makes the scheme relevant to a freelancer or consultants tenant looking for extra income from a spare room without triggering a full landlord tax position on income that never touches the €14,000 mark.
When It Stops Making Sense
Once expected income is clearly going to exceed €14,000 for the year, the exemption stops being the better option, since the alternative, standard rental taxation, allows mortgage interest, repairs, and other genuine costs to be deducted against the income instead of taxing the full gross amount. Running the numbers both ways before committing to a monthly rate, rather than after receipts have already crossed the threshold, is exactly the kind of check our tax services cover for homeowners weighing this decision.
Frequently Asked Questions
Can I split the €14,000 threshold if my spouse and I jointly own the home?
Yes. Where more than one person is entitled to the rental income, the threshold and the relief are divided between them rather than each getting the full €14,000 separately.
Can I rent a room to my own adult child under this scheme?
No. Renting to a spouse, civil partner, or child is specifically excluded, though other family members such as siblings, parents, or cousins are permitted.
Does rent-a-room income affect my mortgage interest tax credit?
No. Revenue has confirmed that earning income under rent-a-room relief doesn’t affect eligibility for the Mortgage Interest Tax Credit.
What happens if I accidentally exceeded the limit in a previous year and paid tax on it unnecessarily?
There’s generally a four-year window to claim relief retroactively on rent-a-room income that was taxed in a previous year where the exemption should have applied.
Does the person renting the room lose their own Rent Tax Credit?
No. Revenue has clarified that a homeowner using rent-a-room relief doesn’t prevent the tenant from claiming their own Rent Tax Credit on the rent they pay.
Getting the Declaration Right, Not Just the Threshold
The €14,000 figure gets most of the attention, but the more common mistake is simpler: assuming that staying under it means nothing needs to be filed at all. A fuller picture of how online chartered accountants work with homeowners on this exact declaration is covered on geroconnor.info.
