NT Rent Increase Rules: Notice Periods, Limits and the Rent Bidding Ban

How Often Rent Can Increase

Under the Residential Tenancies Act 1999, rent cannot be increased more than once every six months. The landlord must give the tenant at least 30 days' written notice before the increase takes effect. The tenancy agreement must provide for the increase and state its amount or method of calculation.

Written Notice Is Mandatory

A rent increase is only valid if the landlord provides written notice specifying the new amount and the date it takes effect. Verbal notice does not count. If the landlord raises the rent without proper written notice, the tenant is not obliged to pay the higher amount until correct notice has been given and the notice period has elapsed.

The Rent Bidding Ban

Since 2 January 2024, the Tranche 2 reforms to the Residential Tenancies Act 1999 have made it illegal for landlords and agents to:

• Solicit or invite rent bids from prospective tenants
• Conduct rent auctions
• Advertise a property without a fixed, specified rental amount

Every rental advertisement must show a fixed dollar figure. Advertising a price range, inviting offers, or listing a property as "rent negotiable" is an offence.

This ban applies across all advertising channels — online listings, print advertisements, window cards and social media. Agents who facilitate rent bidding on a landlord's behalf also face penalties.

Advance Rent

The rules on advance rent are straightforward: a landlord cannot require more than one month's rent in advance. This is separate from the security deposit (bond), which is capped at four weeks' rent.

Requiring a tenant to pay three or six months' rent upfront — a practice that exists in some other jurisdictions — is not permitted under NT law.

What This Means in Practice

The rent increase rules are not complicated, but getting them wrong is expensive in tenant goodwill and tribunal risk. The most common mistakes are:

• Increasing rent before six months have passed since the last increase
• Giving less than 30 days' written notice
• Advertising a new tenancy with "offers above" language

Each of these can be challenged by the tenant. The safest approach is to set a clear rent amount at the start of the tenancy, schedule any increases at proper intervals with the full notice period, and keep copies of every notice served.

For a full walkthrough of the rent rules alongside the other obligations that apply to NT landlords, the NT Rental Minimum Standards guide covers the framework in step-by-step order.

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