If I have to give NOT in the future, I will 100% challenge my own notice.
If every LL needs to challenge their own rent review, the RTB will need to get even bigger
You may not be allowed to. The RTB stopped accepting self-referrals this year.
The Act hasn’t changed. s.76 lets either party refer “any matter relating to the tenancy”, and s.78 lists the validity of a notice of termination among the matters that can be referred. Landlords have used that for years to get a notice tested before acting on it, and the RTB has issued determination orders on exactly that basis.
During 2026 that stopped. Landlords who have tried it this year have had their referrals refused (I've heard from several sources, so happy thats policy now)
So the one tool a careful landlord had for catching a defective notice before it cost him a year has been withdrawn by the RTB, with no statutory basis as far as I can see.
If you sent them an arrears notice with 1560 as the amount, would that be a valid notice in both cases?
On the notice, yes, probably. On the money, you’d likely lose it.
Too high is fatal. TR0001393 (EUR 10 over) and TR0525-008744 (EUR 50 over, where the Tribunal added that
EUR 1 a month “on its own” would have been enough to make the notice invalid).
Too low has been treated as harmless: TR0001549 and TR0001530, and in TR0001674 the tenant’s own representative accepted that the true figure was higher than the letter said. So your EUR 1,560 letter should survive whether the increase was valid or not.
The problem is the EUR 480 you left out. Nobody has tested that exact point, but TR0823-006554 (Galway) is close enough to worry about. A landlord let his tenant pay reduced rent during Covid, informally, as a kindness. When the tenant was back in work and paying in full, the landlord claimed the EUR 1,836 shortfall. The Tribunal refused it:
”The Applicant Landlord was not entitled to agree to one thing, have the Respondent Tenant act on foot of it, and then resile from that.”
That was an informal arrangement never put in writing. A warning letter from you stating that the arrears are EUR 1,560 is a written statement of what you say is owed, and the tenant acts on it by paying that sum. By the same reasoning, the EUR 480 is gone. Note too that the Galway landlord was being decent, and that is what cost him.
Go the other way and the increase itself is the problem. A signed lease at the higher rent doesn’t cure a missing review notice (TR0001404), and 18 months of the tenant paying it doesn’t either (TR0001584).
So: state the full figure and risk the NOT; state the old figure and lose the money. It’s getting close to a rule that the rent can never safely be increased at all.
On challenging your own increases every year - as aove in my reply to
@DannyBoyD . The RTB has stopped taking those referrals.
How long before every single historical rent increase including unchallenged ones are systematically examined for flaws and landlords are hauled in?
It’s already happening, just not in the way you’d expect. There’s no inspector going through old reviews. The audit happens when the landlord brings his own arrears or termination case. In TR0525-008744, a 2021 review that the tenants had paid for two and a half years without complaint was examined in a 2025 arrears case and struck down, taking the notice of termination. Every arrears case is a review of the entire rent history, and the landlord is the one who starts it.
The new forms are all up now, and they’re far more prescriptive than anything before them. Accommodation providers are being led to the slaughter, and what strikes me is how quiet it is. Nothing in the media. No complaint I can find from anyone with a voice.
The institutional landlords must know. They’ll have worked out that the RTB’s calculator uses the wrong base month for every rent set since 1 March, so it measures 10 or 11 months of inflation for every 12-month review, and that it rounds the 2% cap down to whole months, which the Act doesn’t do. Yet they’re standing by too. I’m not sure why.
EDIT: Issue with hyperlinks in initial post, so reposted without them
All cases can be found here:
rtb.ie