If you're renting with HAP (the Housing Assistance Payment) and your landlord says the rent is going up, the first thing to know is this: they can't just pick a number. Since 1 March 2026, every private tenancy in Ireland — HAP included — is under a national rent cap, and a big share of "increases" tenants are asked to pay are actually invalid. Here's exactly what's allowed, what it means for your HAP payment, and how to push back if it's wrong.
Quick facts
- Cap
- 2% a year, or inflation — whichever is lower
- How often
- Once every 12 months, max
- Notice
- 90 days, sent to you AND the RTB the same day
- If it's wrong
- It's invalid — dispute it with the RTB, free
Can a landlord increase rent on a HAP tenancy?
Yes, but only within the law. Since 1 March 2026 a national rent cap limits increases on every private tenancy — including HAP — to 2% a year or the rate of inflation, whichever is lower. Rent can be reviewed only once every 12 months, and you must get at least 90 days' notice, sent to you and the RTB on the same day, or the increase is invalid.
The old system of Rent Pressure Zones (where the cap only applied in designated areas) was abolished on 1 March 2026 and replaced with this single nationwide cap. So it no longer matters where in the country you rent — the same limit protects you.
How much can my HAP rent go up in 2026?
The cap is the lower of 2% or general inflation (HICP). With inflation running above 2% in early 2026, the 2% figure applies — so on €1,500 rent, the most it can rise in a year is about €30 a month. The one exception is newly built apartments completed on or after 10 June 2025, which can rise in line with CPI instead.
What happens to my HAP payment if the rent goes up?
Your own contribution — the differential rent you pay the local authority — is based on your household income, not the landlord's rent, so a rent rise doesn't automatically change what you pay. But tell your local authority. The HAP payment to the landlord has area rent limits, and if the new rent goes above them you may have to pay the difference as a top-up — unless the council applies its discretionary flexibility.
That flexibility is real and worth asking about: local authorities can lift the standard HAP rent limit by up to 35% on a case-by-case basis where you can't find somewhere suitable within the normal limit, and the Dublin region (and a few others) can go up to 50% for households presenting as homeless under Homeless HAP. Don't assume you're stuck with a top-up before you've asked.
What if the increase is invalid or too high?
You can dispute it — and you don't pay an invalid increase. A rent rise that breaks the 2%/inflation cap, comes sooner than 12 months, or wasn't notified correctly (90 days, sent to you and the RTB the same day) is not valid. Raise a dispute with the Residential Tenancies Board (RTB), and get free advice from Threshold or Citizens Information first.
Check the notice
Was it in writing, at least 90 days before the new rent, and sent to both you and the RTB on the same day? If not, it's invalid.
Check the amount and timing
Is the rise 2% or less (unless a new-build), and has it been at least 12 months since the last review? Use our Rent Increase Checker.
Get free advice
Contact Threshold or Citizens Information — they deal with this every day and it costs nothing.
Dispute it with the RTB
If it's wrong, open a dispute with the Residential Tenancies Board. Also tell your local authority so your HAP stays correct.
Common questions
Does the cap apply to HAP tenancies too?
My landlord wants a cash top-up above the HAP limit — is that allowed?
Can my landlord evict me instead of following the cap?
How do I know if my home is an exempt new-build?
Check the official sources
This guide is general information, not legal advice. Rent rules and HAP limits change and vary by local authority — always confirm the current position with the RTB, Citizens Information or Threshold before you act.
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