New Rules from March 2026

Rent Increase Calculator

Calculate the maximum rent increase you can apply under Ireland's new CPI or 2% cap. Updated for the March 2026 national rent control rules.

Current Tenancy Details

%

As of early 2026, Irish CPI is approximately 1.5–2.0%. Check cso.ie for the current figure.

Your Maximum Allowed Increase

New Maximum Monthly Rent
€1,626
CPI cap applied (1.6% < 2%)
Current rent€1,600/mo
CPI rate1.6%
2% cap2.0%
Rate applied (lower of CPI or 2%)1.6%
Maximum increase per month€26
Maximum increase per year€307
Earliest you can apply this increase1 March 2026
Notice required90 days

How to Apply the Increase

1
Check the date. You can only review rent once every 12 months from the date it was last set.
2
Use the RTB's official form. Download the rent review notice from rtb.ie. You must use their standard form.
3
Give 90 days' notice. The tenant must receive the notice at least 90 days before the increase takes effect.
4
Notify the RTB on the same day. You must inform the RTB of the rent review on the same day you notify the tenant.
5
Keep records. Retain copies of all notices, RTB correspondence, and CPI data used in your calculation.
New apartments exemption: Apartments with a commencement notice on or after 10 June 2025 are exempt from the 2% cap. Rent increases in these properties are capped by CPI only (no 2% ceiling). This exemption is designed to encourage new apartment development.

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