CPI Rent Increase Calculator (Australia)
Accurately determine your next rent increase by comparing index points from the Australian Bureau of Statistics (ABS) CPI release.
Lease Details
Total annual increase: $0
Rent Projection Trend
Based on actual ABS quarterly indices
Projection Note: Future values are estimated using the average annual CPI growth for Sydney over the most recent 5 years of ABS data. Real outcomes depend on future quarterly releases.
What is a CPI Rent Review?
A CPI Review is a common mechanism in Australian commercial leases to ensure that the rent paid by a tenant keeps pace with inflation. Instead of a fixed percentage increase (like 4%), the rent is adjusted relative to the Consumer Price Index (CPI) published quarterly by the Australian Bureau of Statistics (ABS).
In your lease document, look for the 'Rent Review' clause. It will specify which index to use (usually 'All Groups' for your state capital) and the comparison dates.
The Calculation Formula
New Rent = Current Rent × (New Index ÷ Old Index)
Example: If your rent is $50,000 and the CPI moved from 120.0 to 126.0 (a 5% increase), your new rent would be $52,500.
State-by-State Rules for CPI Rent Reviews
CPI rent increases in Victoria
In Victoria, rent review mechanisms in retail and commercial leases are governed by the Retail Leases Act 2003. If a lease specifies a CPI-based rent review, the landlord must use the Consumer Price Index (All Groups) for Melbourne as published by the ABS. Crucially, the Act prohibits "double-dipping" or using multiple review methods in a single year, ensuring CPI is the sole escalator when active.
CPI rent increases in NSW
In New South Wales, CPI-based rent reviews are common in both commercial and retail leases, the latter regulated by the Retail Leases Act 1994. Reviews must use the Sydney-specific ABS CPI index. NSW law permits "no-ratchet" clauses, which prevent rent from falling if the CPI decreases, but any calculation must be accurate and transparent to be legally binding.
Expert GuideCPI Rent Reviews Explained
Read our in-depth professional guide breaking down capital city ABS quarterly indices, rent adjustment formulas, and how to spot ratchet clause traps.