60 days' notice
A common misconception is 90 days - that is actually the no-cause periodic-tenancy termination period reinstated by the 2024 Amendment. Rent increases are unchanged: 60 days written notice, no more than once every 12 months.
Earliest valid date, if you serve notice today
27 November 2026
This is the earliest date, exactly 60 days from today - RTA rent-increase notices do not carry an extra buffer day.
Legal reference: s.24 Residential Tenancies Act 1986.
Source: Residential Tenancies Act 1986, as amended by the Residential Tenancies Amendment Act 2024. This is general information, not legal advice - check tenancy.govt.nz or a lawyer for your specific situation.