Landlord calculator
Rent increase notice period checker
Check the minimum notice period required for a rent increase in Northern Ireland. Based on the Private Tenancies Act and current NI tenancy rules.
The date the current tenancy began
When you will give the tenant written notice
How often the tenant pays rent
Leave blank if this would be the first increase
Minimum notice period
28 days (monthly tenancy)
Earliest effective date
5 August 2026
Rent increases in Northern Ireland must be communicated in writing. The notice period shown is a minimum guide based on payment frequency — always verify against your tenancy agreement and the latest Private Tenancies Act guidance.
How this calculator works
Enter your tenancy start date, how often rent is paid, and the date you plan to serve notice. The calculator checks whether you're within the initial term and calculates the minimum notice period required.
Before you use this tool
In Northern Ireland, landlords must give tenants proper notice before increasing rent. The notice period depends on how often rent is paid and whether the tenancy is within its initial term.
This calculator is for general information only and does not constitute legal, tax, or financial advice. Rules and rates can change — always check the latest guidance from HMRC, the Department for Communities, or a qualified adviser before acting.
Related guides
Learn more about the rules behind this calculator.
Frequently asked questions
Common questions about rent increase notice period checker.
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