Finance & property Australia
Rent Increase Calculator Australia
When a landlord announces a rent rise, the numbers can be hard to compare because rent is quoted weekly but paid in different ways. Enter your current rent and the increase to see the new rent each week, fortnight and month, and what the rise costs you over a year.
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New rent each week
โNew rent each fortnight
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New rent each month
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Extra each week
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Extra over a year
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Increase as a percentage
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The working
General information, not legal advice. General information and estimates only, not financial or tax advice. Rates, thresholds and rules change, so check the figures for your situation and speak to a registered adviser before you act.
How do I calculate a rent increase?
Multiply the weekly rent by one plus the percentage rise. A 5% rise on $650 a week gives $682.50 a week, $1,365.00 a fortnight and $2,957.50 a month, an extra $1,690 a year. Monthly rent is the weekly rent times 52 divided by 12, not times four.
What you can do about an increase
Read the notice carefully: check the date, the amount, how much notice you were given and that it is allowed under your lease and local rules. If the rise seems high, compare with similar rentals nearby and ask the landlord or agent to explain it. Negotiating, even for a smaller rise, is common.
If you cannot reach agreement, tenancy authorities in each place can explain your options for disputing a rise.
Planning for the rise
Work out the new rent as a share of your income. A common guide is to keep housing at or below about 30% of gross income, though in expensive areas many households pay more. Use the budget calculator to see where the extra rent comes from.
To plan your whole budget, use the budget calculator.
How this is calculated
The rule, step by step, so you can check any figure by hand.
new weekly rent = current rent ร (1 + increase รท 100), or current rent + the dollar amountfortnightly rent = weekly ร 2monthly rent = weekly ร 52 รท 12extra over a year = (new weekly โ current weekly) ร 52increase % = (new โ current) รท current ร 100
Rent is usually quoted weekly, but many people budget monthly. A month is 4.33 weeks on average, not four, which is why paying four weeks each month falls short by about a week's rent over a year. The tool converts with 52 divided by 12 so the monthly figure matches a full year of rent.
In most states, rent can be increased only once in a 12 month period and the landlord must give written notice, commonly 60 days. The rules differ by state and territory, including whether a fixed-term lease allows an increase, so check your state's tenancy authority before you agree to or dispute one.
A worked example
Weekly rent of $650 with a 5% increase.
- New weekly rent$682.50
- New fortnightly rent$1,365.00
- New monthly rent$2,957.50
- Extra each week$32.50
- Extra over a year$1,690
$682.50 a week, $1,690 more a year.
Check the notice period before the increase takes effect.
Rules differ by place
Tenancy law is made by each state and territory, so the notice period, how often rent can rise and the way to dispute an increase all depend on where you rent.
What it leaves out
Rates, utilities and other charges that may change with the rent are not included. This tool does not tell you whether an increase is lawful.
What this calculator does not do
- Percentage or dollar increase
- Rent converted at 52 weeks a year
- Does not check the lawfulness of a rise
- General information, not legal advice
Common questions
How is monthly rent worked out from weekly rent?
Weekly rent times 52 divided by 12.
How often can rent go up?
Usually once every 12 months, with written notice; check your local rules.
How much notice is required?
Commonly 60 days in writing.
Can I dispute a rent increase?
Often yes; your tenancy authority explains how.
What is a fair increase?
It depends on the local market; compare similar rentals.
Where these numbers come from
- MoneySmart โ renting Independent guidance on renting and tenancy rights
Method last reviewed 2026-10-28 This calculator uses fixed rules rather than rates that change, and its method is re-checked against the sources above at least once a year. Out of date? Tell us and we will fix it.
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