Rent Calculator · 2% or CPI
Ireland rent increase calculator
For most private tenancies the national rent cap uses the lower of 2% and CPI per year. New apartments and student-specific accommodation commenced on or after 10 June 2025 follow CPI only, with no 2% ceiling. People still search RPZ — this is the same calculator. Type the rent you charge today and, if you have looked it up, the CSO CPI figure.
Last updated 19 September 2026
- From 1 March 2026 the State uses a national cap. RPZ remains how many landlords search.
- Open rtb.ie for current rent-increase rules. Stay compliant with RTB rules.
- Logged-in landlords can store a draft increase under Rent increases.
Questions
Is this the RPZ calculator?
People still search RPZ. From 1 March 2026 Ireland uses a national rent cap — generally the lower of 2% or CPI. New apartments and student-specific accommodation commenced on or after 10 June 2025 follow CPI only. Confirm current rules on rtb.ie.
What date format should I use?
Day / month / year (dd/mm/yyyy), for example 19/09/2026. The optional start date is used only to hint 90 calendar days for a notice.
Next: tenant portal · RTB tools · calculator walkthrough
Questions: support@smartrent.ie
Store the draft on the tenancy file.
Run the calculator now, then start a 14-day trial to keep notices and RTB dates together.
Start 14-Day Free Trial
No credit card required · Full access · Cancel anytime