How do I calculate a rent increase?

To apply a percentage rise, multiply the current rent by one plus the percentage as a decimal. A 5% rise on $500 is 500 times 1.05, which is $525. To find the percentage, divide the change by the old rent and multiply by 100.

Is the rent figure weekly or monthly?

Rent in New Zealand is usually quoted per week. This calculator works with whatever period you enter and also shows the annual cost change, so you can see the full impact of an increase over a year.

Rent Increase Calculator

Work out a rent increase two ways. Enter your current rent and a percentage to get the new rent, or enter the old and new rent to find the percentage and dollar change. The calculator also shows the extra cost over a year. In New Zealand rent can rise at most once every 12 months with 60 days notice.

Apply a percentage increase

Current rent (per week)

Increase

new weekly rent

Extra per week$0

Extra per year$0

Find the percentage from old and new rent

Old rent

New rent

The rules in brief

Under the Residential Tenancies Act, rent for a periodic tenancy can be increased only once in any 12 month period, and the landlord must give at least 60 days written notice. This calculator handles the maths, but always check the latest rules with Tenancy Services and your agreement.

Worked example

A 5% increase on $550 a week is $27.50, taking the rent to $577.50. Over a year that is about $1,430 more. Going from $550 to $590 is a $40 rise, which is about a 7.3% increase.

Related calculators

Rent Affordability Calculator: rent you can afford.
Rent vs Buy Calculator: renting versus buying.
Flatting Costs Calculator: split flat costs.
Percentage Increase Calculator: any percentage rise.

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