NZ Landlord Rent Increase Checklist: Every Step Before You Serve Notice

Serving a rent increase notice in New Zealand without checking every box first is how landlords end up with an invalid notice — and a tenant who's legally entitled to keep paying the old rent.

Here's the compliance checklist, step by step, grounded in the Residential Tenancies Act 1986 (rules as at October 2026).

Pre-Notice Verification

Before you draft anything, confirm these three things:

Tenancy type. Is it periodic or fixed-term? If fixed-term, check whether your written agreement contains an explicit rent review clause (Schedule 1, Provision A or B). No clause means no increase until the fixed term ends — Section 24(1)(g) is absolute on this.

12-month rule. At least 365 days must have passed since the tenancy started (for a first increase) or since the last increase took effect (for a subsequent one). The clock runs from the effective date, not the date you served the notice. Pull your rent history log and verify the exact anniversary before going further.

Market benchmark. Check the MBIE Market Rent tool for your suburb's lower quartile, median, and upper quartile weekly figures. The quartiles are context, not a legal cutoff; a tenant can apply to the Tenancy Tribunal if the rent substantially exceeds market rent for comparable local properties.

Notice Preparation

Use Form T190. The current version is revision T190 03/25, available from tenancy.govt.nz. It's not strictly mandatory to use this form, but it pre-fills every field Section 24 requires — landlord and tenant names, property address, current rent, new rent, and the exact effective date.

State the dollar amount. The notice must show the new weekly (or fortnightly) rent in dollars and cents. Don't write "market rent" or a percentage — the legislation requires a specific figure.

Pick your effective date. This is the date the new rent actually becomes payable. It must fall on or after both the 12-month anniversary and the day after your 60-calendar-day notice period ends (including service buffer days).

Service and Buffer Days

Choose your delivery method and add buffer days:

• Hand delivery: 0 buffer days (deemed received immediately)
• Email (if the tenancy agreement permits electronic service): 0 days if sent before 5pm on a working day; +1 working day if sent after 5pm
• Letterbox or door attachment: +2 working days
• Post (NZ Post): +4 working days

Count 60 calendar days starting the day after deemed receipt. The earliest effective date is the day after the 60-day period ends.

Working days exclude weekends and public holidays (including provincial anniversary days). Calendar days include everything. The distinction matters enormously around Easter, Christmas, and Matariki.

Post-Service Administration

Log the service. Record the delivery method, the date and time of dispatch, and any tracking or read-receipt evidence. This is your proof if the tenant challenges validity.

Bond top-up. If the new rent pushes the maximum permitted bond (4 weeks' rent) above the bond currently held, you can request a top-up. Lodge the additional amount via the MBIE Bond Hub within 23 working days of receiving it from the tenant.

Advance rent. You still can't hold more than 2 weeks' rent in advance. If the tenant prepaid at the old rate, adjust the next payment cycle so the new amount applies from the effective date without breaching the limit.

Update your records. Rent ledgers must be retained for 7 years under Section 30 of the RTA.

What Happens If You Get It Wrong

An invalid notice doesn't just delay the increase — it's void. The tenant has no obligation to pay the higher rent. If you've already collected the difference, you may need to refund it, and the Tenancy Tribunal can order exemplary damages for unlawful acts under Schedule 1A.

The most common mistakes: serving within 12 months of the last effective date, forgetting to add buffer working days to the service calculation, and attempting to increase rent on a fixed-term tenancy with no review clause.

The NZ Rent Increases guide walks through each verification step with worked date calculations and fillable worksheets — including a service buffer calculator and a rent increase history log that does the 12-month check for you.

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