Rent-a-Room Relief Calculator Ireland

How the Rent-a-Room Relief Scheme Works

Ireland's Rent-a-Room Relief scheme allows homeowners to earn up to €14,000 per year tax-free by renting a room in their principal private residence. Introduced to encourage homeowners to use spare rooms and ease the rental housing shortage, the scheme exempts qualifying income from income tax, USC (Universal Social Charge), and PRSI entirely. The relief applies only when you live in the property yourself — it cannot be used for buy-to-let properties or holiday homes. Income counted towards the threshold includes rent plus any contributions your tenant makes for utilities, food, or other services. As of the 2026 tax year, the threshold remains at €14,000. Last updated: March 2026 based on Revenue Commissioners published rates.

The Cliff-Edge Rule: Why the Threshold Matters

The most important feature of the Rent-a-Room scheme is its all-or-nothing design. If your total rental income is €14,000 or less, the entire amount is exempt — you pay zero tax. However, if your income exceeds €14,000 by even one euro, the entire amount becomes taxable, not just the excess. This cliff-edge means that earning €14,001 could cost you more in tax than you gain from the extra euro. A higher-rate taxpayer (40% income tax + 4% USC + 4% PRSI = 48% combined) would pay approximately €6,720 in tax on €14,001 of income, leaving a net of roughly €7,281 — far less than the €14,000 kept under the relief. When you exceed €14,000, you can deduct allowable rental expenses before calculating tax, which changes the break-even point depending on your expense level.

Rent-a-Room Relief vs Standard Rental Taxation

Standard rental income in Ireland is taxed as Case V income under Schedule D. You can deduct allowable expenses including mortgage interest (subject to restrictions), repairs, insurance, management fees, and wear-and-tear capital allowances. The net rental profit is then subject to income tax at your marginal rate (20% or 40%), USC at your applicable rate, and PRSI at 4%. For landlords with significant expenses, standard taxation can sometimes produce a lower tax bill than Rent-a-Room if income slightly exceeds €14,000. The break-even calculation depends on your marginal tax rate, USC rate, and total allowable expenses — this calculator shows both scenarios side by side so you can make an informed decision.

Who Qualifies for Rent-a-Room Relief

To qualify for Rent-a-Room Relief you must: (1) be the owner or tenant of the property; (2) use the property as your principal private residence during the letting period; (3) let a room (or rooms) within that residence; and (4) keep total income at or below €14,000. Short-term lettings through platforms such as Airbnb can qualify provided the above conditions are met, but Revenue monitors such arrangements closely. You cannot claim relief on a room in a property that is not your main home. PAYE workers whose Rent-a-Room income stays within €14,000 do not need to file a tax return — the income is automatically exempt. If income exceeds the threshold, you must register for self-assessment and file Form 11.