Few things make a renter's heart sink like an email with the subject line "Notice of Rent Increase". With rents climbing across the country, plenty of Australians are wondering whether the number on that notice is actually legal — or whether their landlord is simply chancing it.
The good news is that every state and territory has firm rules about how and when rent can go up. A landlord can't just decide on a whim that you owe more next month. This guide breaks down what's lawful, what isn't, and exactly what to do if you think your increase is unfair.
How often can rent legally go up?
The single most important rule is frequency. In almost every Australian jurisdiction, rent can only be increased once every 12 months for most ongoing (periodic) and fixed-term agreements signed in recent years. This is a major protection that came into force progressively across states to stop repeated mid-year hikes.
- NSW: Rent can be raised once every 12 months, regardless of whether your lease is fixed-term or periodic. NSW Fair Trading oversees the rules.
- Victoria: Once every 12 months, with the Residential Tenancies Act enforced by Consumer Affairs Victoria.
- Queensland: The Residential Tenancies Authority (RTA) limits increases to once every 12 months, and the increase rule now attaches to the property, not just the tenancy.
- Western Australia: Once every 12 months under reforms overseen by the Department of Energy, Mines, Industry Regulation and Safety (Consumer Protection).
If your landlord tries to raise the rent twice in a year, that's a clear red flag worth challenging.
Can rent go up during a fixed-term lease?
Generally, no — not unless your lease specifically allows it. During a fixed-term agreement, rent can only be increased if the lease contains a clause setting out the increase or the exact method for calculating it. If there's no such clause, your rent is locked in for the term.
This is exactly why reading your lease before you sign matters so much. A vague clause like "rent may be reviewed periodically" is not enough in most states; the increase amount or formula usually has to be clearly specified for it to be enforceable.
Watch the notice period. Across most states, landlords must give at least 60 days' written notice of a rent increase. If you receive a notice demanding more rent in two or three weeks, it almost certainly isn't valid — and you don't have to pay the higher amount until proper notice has run its course.
What counts as an "excessive" increase?
Frequency and notice are black-and-white. The amount is greyer — there's no national cap on how much rent can rise. However, every state lets you challenge an increase you believe is excessive by taking it to the relevant tribunal:
- NSW: The NSW Civil and Administrative Tribunal (NCAT)
- Victoria: The Victorian Civil and Administrative Tribunal (VCAT)
- Queensland: The Queensland Civil and Administrative Tribunal (QCAT)
- WA: The Magistrates Court
When deciding whether a rise is excessive, the tribunal weighs up the rent charged for comparable properties in the area, the condition of the premises, any outstanding repairs, and the value of anything provided with the property. If your kitchen has been broken for six months and the landlord wants 20% more, that's a strong case.
How to challenge an increase
- Don't ignore the notice — act before the deadline to apply to your tribunal.
- Gather evidence: screenshots of comparable rentals nearby, photos of any disrepair, and records of unresolved maintenance requests.
- Lodge an application with the relevant tribunal (often a small or no fee).
- Keep paying your current rent while the matter is decided, unless ordered otherwise.
Make sure the notice is valid
For a rent increase to be enforceable, it almost always must be in writing, state the new amount and the date it takes effect, and give the full required notice period. A text message saying "rent's going up" or a verbal warning at an inspection generally doesn't cut it. If the paperwork is wrong, the increase can be invalid — so always check the details against your state's requirements with NSW Fair Trading, Consumer Affairs Victoria, the RTA or your local Consumer Protection body.
A rent increase isn't automatically something you have to accept. Check that it's the right frequency, that you've been given proper written notice, and that the amount is reasonable for your area and the condition of the place. If something feels off, the tribunals exist precisely to keep landlords honest.
Knowing the property — and the people managing it — before you sign is your best defence against nasty surprises later. Search your address on Rentr to read honest reviews from past tenants, see how a rental and its landlord really stack up, and rent with confidence.