Short-term let hosts in Ireland can't claim the tax relief built for long-term landlords, and that catches a lot of Airbnb and self-catering hosts out every filing season. Here's what's actually deductible, what isn't, and why the answer depends on how you run the let, not just what platform you use.
TL;DR
- Short-term let tax relief in Ireland doesn't include Rent-a-Room Relief — that €14,000 exemption covers long-term lodgers, not Airbnb-style guests.
- Hosts can still deduct real costs: cleaning, utilities, management fees and 12.5% annual wear-and-tear on furniture.
- Whether you're taxed under Case I (trade) or Case IV (occasional income) depends on the service level you provide guests.
- Registering with Fáilte Ireland's Short-Term Letting Register is a separate legal requirement in 2026, not a tax relief question.
Why this matters
A lot of hosts assume that because they're letting out a spare room or a self-catering cottage, the same rules that cover a lodger apply. They don't. Revenue treats short-term guest arrangements — the kind booked through a platform or direct, for a few nights at a time — differently from a long-term tenancy or a lodger staying under Rent-a-Room terms, and the gap between the two catches people every year in 2026.
If you're managing a short-let property yourself, this is one of the areas where a wrong assumption costs real money at filing time. Sos Stays runs commission-based short-let management for landlords across the Boyne Valley, Louth, Meath and the Mourne/Wexford coast, and the tax question is one of the first things owners ask before handing over the keys to a management arrangement.
Can short-term let hosts claim tax relief in Ireland?
No, not the relief most people are thinking of. Rent-a-Room Relief — the scheme that shelters up to €14,000 a year from tax — was designed for people taking in a lodger or student for the academic year, not for guests booking a weekend through an app. Revenue's position, confirmed through guidance and case determinations, is that short-term guest accommodation is a separate arrangement from a genuine long-term letting, even if it happens in the same house.
| Relief or treatment | Applies to short-term guest lets? | Applies to long-term lettings? | |---|---|---| | Rent-a-Room Relief (€14,000) | No | Yes, for lettings of 29+ days | | Case I trading deductions | Yes, if run as a business | Not typically — usually Case V | | Case IV occasional-income deductions | Yes, if not a trade | Not applicable | | Wear-and-tear allowance (12.5%/year) | Yes | Yes |
That table is the whole answer in one place: short-term hosts lose the headline relief but keep normal expense deductions either way.
Rent-a-Room Relief: the €14,000 exemption that excludes short lets
Rent-a-Room Relief lets someone earn up to €14,000 tax-free from letting a room (or rooms) in their own home, as long as the arrangement runs for 29 days or more per letting. A short-term guest booked for three nights through a platform doesn't meet that test, no matter how the room is advertised. If any part of your income comes from bookings shorter than 29 days, that portion sits outside Rent-a-Room Relief entirely, even in a year where you also host a genuine long-term lodger under the same roof.
Case I trading income: deduct real costs if you run it like a business
If you're providing hotel-style extras — breakfast, cleaning between every guest, key handover, active management of multiple bookings a month — Revenue is more likely to view the letting as a trade, taxed under Case I. That's not automatically bad news: Case I lets you deduct the full range of ordinary running costs against income, including cleaning and linen, utilities apportioned to guest use, platform and advertising fees, management commission, and the 12.5% annual wear-and-tear allowance on furniture and equipment. Run correctly, the trading route often nets a lower tax bill than people expect once real costs are counted.
Case IV occasional income: fewer deductions, simpler paperwork
If the letting is genuinely occasional — a handful of weeks a year, no real business structure behind it — the income usually falls under Case IV, taxed as miscellaneous income at your marginal rate along with USC and PRSI. You can still deduct costs directly tied to earning that income, but the treatment of bigger items like mortgage interest is less generous than under a proper trade. Most hosts letting one property occasionally sit here, and the paperwork is simpler, just less flexible on deductions.
Why the tax treatment varies
- Whether you provide hotel-like services (breakfast, daily cleaning, reception) or just hand over the keys
- How many properties you let and how often bookings turn over
- Whether it's a room in your own home or a separate self-catering unit
- Whether letting is occasional (a few weeks a year) or close to continuous
- Your registration status with Fáilte Ireland's Short-Term Letting Register
- Local authority planning classification, particularly in Rent Pressure Zones
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Do I pay tax on Airbnb income under €5,000 a year?
Yes — there's no minimum threshold before short-term guest income becomes taxable in Ireland. Unlike the €14,000 Rent-a-Room exemption, which only covers separate long-term lodger arrangements, every euro from short-term guest lettings must be declared, even a single weekend booking.
Can I claim my mortgage interest against short-term let income?
Mortgage interest is deductible as an ordinary business expense if your letting is taxed under Case I as a trade, but the position is less generous if it's taxed as occasional Case IV income. Get a qualified accountant to check which category applies before filing your 2026 return — it changes what you can offset.
Do I need to register before I can claim any deductions?
Registering with Fáilte Ireland's Short-Term Letting Register is a separate legal requirement, not a condition for claiming expenses. Operating an unregistered short let in 2026 risks its own penalties, on top of whatever tax position applies to your income.
None of this replaces an actual conversation with an accountant. Tax law shifts, your other income affects your marginal rate, and PRSI class can change the maths — the categories above are the framework, not a substitute for someone looking at your own return.
One last thing
The detail that trips people up most isn't the tax rate — it's Principal Private Residence relief. If you've let out what was your own home on a short-term basis, even for part of the year, you can lose full PPR relief on any gain when you eventually sell, at the 33% Capital Gains Tax rate. It's a bigger number than most hosts expect, and it only shows up years later at sale, long after the short-let income has been spent.