RPZ Rent Increase Calculator
Work out the maximum legal rent you can charge inside a Rent Pressure Zone. Free, instant, and based on the Residential Tenancies Board formula. Built for landlords, agents and tenants in Ireland.
Rent can be reviewed once every 12 months. Enter the gap since the last review.
The RPZ cap is the lower of inflation (HICP) or 2% per year. Adjust if a different rate applies to your tenancy.
This tool gives an estimate based on the standard RTB pro-rata formula: New Rent = Current Rent × (1 + cap × months ÷ 12). It is not legal advice. Always verify against the official RTB RPZ calculator and current legislation before issuing a rent review notice.
Three things every landlord must get right
The cap
Inside a Rent Pressure Zone, a rent increase is limited to the lower of general inflation (HICP) or 2% per year. The pro-rata formula spreads that cap across the months since the rent was last set.
The frequency
Rent can only be reviewed once in any 12 month period, and a valid written notice of at least 90 days must be served to the tenant before the new rent takes effect.
The proof
The rent review notice must show how the new rent was calculated and confirm the property is in an RPZ. Get the figure wrong and the notice is invalid, exposing you to RTB disputes.
RPZ calculator FAQ
How is the maximum RPZ rent increase calculated?
The Residential Tenancies Board uses a pro-rata formula. The new rent equals the current rent multiplied by (1 + (cap × number of months since the rent was last set ÷ 12)). The cap is the lower of HICP inflation or 2% per annum.
What is the current RPZ cap in Ireland?
Since December 2021, rent increases in a Rent Pressure Zone are capped at the lower of inflation (the Harmonised Index of Consumer Prices) or 2% per year. This calculator defaults to 2% and lets you adjust it if a lower inflation figure applies to your review period.
How often can rent be increased in an RPZ?
Rent can only be reviewed once every 12 months. A valid written rent review notice must be served, giving the tenant at least 90 days before the new rent applies.
How do I check if a property is in a Rent Pressure Zone?
Use the official RTB Rent Pressure Zone checker by entering the Eircode or local electoral area. Most of Dublin, Cork, Galway, Limerick and many commuter towns are designated RPZs.
Is this RPZ calculator official?
No. This is a free estimating tool from Rentalize that applies the standard RTB formula. Always confirm your figure with the official RTB RPZ calculator and current legislation before issuing a notice.
Stop calculating rent reviews by hand
Rentalize automates RPZ compliant rent reviews, notice generation and audit trails across your whole portfolio, so every increase is correct and defensible.
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