CPI Rent Increase Calculator

Name: Australian CPI All Groups index numbers (8 capital cities + weighted average)
Creator: Australian Bureau of Statistics
License: https://creativecommons.org/licenses/by/4.0/

Updated 5 July 2026 from the latest ABS release

Work out a CPI-linked rent adjustment in seconds, using official Australian Bureau of Statistics figures for every capital city and the national weighted average. Free, no signup, always current.

How the CPI rent increase calculation works

A CPI rent review adjusts the rent in line with inflation between two points in time. The maths is three steps:

1
Find the two index numbers. Take the All Groups CPI for the city your lease names, at the current review period and at the previous review (or lease start).
2
Divide. The new index divided by the old index gives the escalation factor.
3
Multiply. Current rent times the escalation factor equals the new rent.

new rent = current rent × (CPI at review ÷ CPI at previous review)

For example: annual rent of $50,000 reviewed over the year to March Quarter 2026 using the national weighted average moved +4.09%, giving a new rent of $52,047.08.

The CPI data this calculator uses

The figures on this page come from the ABS Consumer Price Index, Australia (catalogue 6401.0), All Groups index numbers for the eight capital cities and the weighted average of the eight capitals. Quarterly figures are what most lease clauses reference. Since November 2025 the ABS publishes CPI monthly, and the quarterly series continues as the average of the three monthly indexes.

Index numbers are on the September 2025 = 100.0 reference base introduced in January 2026, including every historical period in the tables below. Older figures therefore sit lower than sources that quoted the previous 2011-12 = 100 base. Re-referencing changes the level of the numbers, not the percentage movements, so calculations are unaffected.

Quarterly index, All Groups CPI

Quarterly index, All Groups CPI
Period	Sydney	Melbourne	Brisbane	Adelaide	Perth	Hobart	Darwin	Canberra	Australia
March Quarter 2026	101.81	101.79	101.42	101.79	101.41	101.86	101.27	101.71	101.7
December Quarter 2025	100.38	100.36	100.38	100.43	99.89	100.65	100.33	100.41	100.32
September Quarter 2025	99.91	99.66	99.48	99.64	99.72	99.55	99.66	99.86	99.73
June Quarter 2025	98.47	98.48	98.16	98.52	98.52	98.1	98.57	98.36	98.43
March Quarter 2025	97.82	98.11	97.37	97.72	96.63	97.62	97.78	98.08	97.7
December Quarter 2024	97.03	97.29	95.54	97.21	96.14	96.89	97.12	97.13	96.81
September Quarter 2024	97.1	97.15	94.99	97.32	95.47	95.39	97.19	97.1	96.62
June Quarter 2024	96.63	96.51	95.78	96.79	95.89	96.46	97.05	96.82	96.41
March Quarter 2024	95.6	95.89	94.88	95.57	93.96	96.28	96.14	95.94	95.41
December Quarter 2023	94.72	94.94	93.81	94.86	93.4	95.37	95.52	95.06	94.53
September Quarter 2023	94.33	94.35	93.35	94.24	92.01	94.69	95.05	94.64	93.94
June Quarter 2023	93.03	93.14	92.67	92.69	91.67	93.84	94.18	93.91	92.87
March Quarter 2023	92.19	92.55	91.73	91.6	90.93	93.43	93.15	92.91	92.08
December Quarter 2022	90.92	91.41	90.01	90.51	90.11	92.33	91.97	91.6	90.85
September Quarter 2022	89.33	89.99	88.72	88.98	86.99	91	91.16	90.56	89.2
June Quarter 2022	87.3	88.16	87.16	86.72	87.43	88.95	89.45	88.9	87.59
March Quarter 2022	85.88	86.64	85.41	84.9	85.97	87.43	87.64	87.48	86.05
December Quarter 2021	84.45	84.7	83.54	83.33	83.26	85.7	85.85	85.58	84.23
September Quarter 2021	83.48	83.75	82.25	82.11	82.07	83.84	85.17	84.74	83.17
June Quarter 2021	82.89	83.07	81.25	81.52	81.43	83.54	83.97	83.63	82.47
March Quarter 2021	82.33	82.85	80.56	81.14	79.86	82.61	83.07	82.99	81.87
December Quarter 2020	81.97	82.6	80.06	80.6	78.77	81.99	80.96	82.29	81.4
September Quarter 2020	81.1	81.42	79.17	80.08	79.52	81.41	80.47	81.67	80.67
June Quarter 2020	79.63	80.69	77.4	79.33	78.13	80.6	79.14	79.8	79.44
March Quarter 2020	81.54	82.15	79.21	80.12	79.1	81.74	81.19	81.75	81
December Quarter 2019	81.34	81.56	79.23	79.86	78.85	81.35	80.99	81.39	80.7
September Quarter 2019	80.91	80.85	78.68	79.27	78.47	80.02	80.84	80.87	80.15
June Quarter 2019	80.48	80.38	78.19	78.7	78.08	79.58	80.6	80.31	79.7
March Quarter 2019	79.97	80.02	77.72	78.25	77.49	79.08	79.99	80.07	79.23
December Quarter 2018	80.04	79.95	77.68	78.2	77.57	79.23	80.62	80.03	79.24
September Quarter 2018	79.64	79.53	77.28	77.77	77.2	78.26	80.46	79.45	78.83
June Quarter 2018	79.19	79.34	76.91	77.6	76.82	77.76	79.96	79.01	78.49
March Quarter 2018	78.89	79.05	76.62	77.24	76.65	77.5	79.7	78.66	78.21
December Quarter 2017	78.68	78.33	76.51	76.95	76.64	76.91	79.68	78.06	77.87
September Quarter 2017	78.15	77.79	75.89	76.39	76.3	76.17	79.49	77.53	77.35
June Quarter 2017	77.54	77.45	75.61	75.57	75.96	75.96	79.01	76.85	76.88
March Quarter 2017	77.33	77.32	75.31	75.5	75.96	75.91	78.8	76.86	76.73
December Quarter 2016	77.05	76.66	75.09	75.21	75.99	75.34	78.86	76.34	76.38
September Quarter 2016	76.65	76.13	74.72	75.04	75.7	74.72	78.94	75.93	75.98
June Quarter 2016	75.88	75.77	74.27	74.39	75.45	74.17	78.68	75.26	75.45
March Quarter 2016	75.47	75.44	73.91	74.04	75.24	74.21	78.43	75.13	75.12
December Quarter 2015	75.63	75.5	73.93	74.29	75.71	74.32	79.17	75.03	75.27
September Quarter 2015	75.44	75.06	73.66	74.1	75.38	73.7	78.92	74.84	74.98
June Quarter 2015	75.24	74.72	73.21	73.91	75.11	73.27	78.63	74.76	74.69
March Quarter 2015	74.55	74.21	72.7	73.54	74.67	73.24	78.64	74.42	74.16
December Quarter 2014	74.18	74.14	72.74	73.5	74.6	73.04	78.82	74.5	74.02
September Quarter 2014	74.05	73.98	72.57	73.26	74.54	72.91	78.68	74.42	73.88
June Quarter 2014	73.63	73.89	72.1	73.01	74.17	72.85	78.5	74.17	73.57
March Quarter 2014	73.35	73.45	71.69	72.71	73.63	72.57	77.99	74	73.2
December Quarter 2013	72.89	73.08	71.26	72.24	73.1	72.24	77.38	73.69	72.77
September Quarter 2013	72.46	72.51	70.7	71.75	72.62	71.57	76.6	72.98	72.25
June Quarter 2013	71.63	71.54	69.84	70.82	71.78	70.9	75.94	72.51	71.38
March Quarter 2013	71.3	71.43	69.49	70.69	71.35	70.63	75.31	72.14	71.11
December Quarter 2012	71.04	71.14	69.45	70.63	71	70.43	74.06	72.01	70.87
September Quarter 2012	70.97	70.83	69.25	70.4	70.86	70.13	74.1	71.75	70.69
June Quarter 2012	69.77	70.01	68.46	69.33	70.08	69.65	73.16	71.01	69.74
March Quarter 2012	69.36	69.68	68.07	69.11	69.73	69.91	72.52	70.57	69.38
December Quarter 2011	69.3	69.67	67.96	69.17	69.56	69.73	72.28	70.83	69.34
September Quarter 2011	69.35	69.62	68.07	69.2	69.46	69.65	72.56	70.64	69.34
June Quarter 2011	68.86	69.19	67.85	68.53	69.28	69.08	72.02	70.19	68.93
March Quarter 2011	68.22	68.72	67.2	67.86	68.39	68.46	71.33	69.45	68.3
December Quarter 2010	67.13	67.55	66.35	66.76	67.6	67.58	70.54	68.42	67.26
September Quarter 2010	66.9	67.16	66.02	66.55	67.57	67.5	70.59	68.12	67
June Quarter 2010	66.37	66.79	65.36	65.97	67.27	66.81	69.85	67.67	66.52
March Quarter 2010	66.12	66.37	64.87	65.49	66.66	66.55	69.29	67.43	66.12
December Quarter 2009	65.59	65.55	64.4	65.1	65.91	66.05	68.92	66.99	65.51
September Quarter 2009	65.19	65.16	64.18	64.86	65.53	65.63	69	66.73	65.16
June Quarter 2009	64.49	64.79	63.31	64.18	65.01	64.88	67.68	66.15	64.55
March Quarter 2009	64.23	64.56	62.95	63.83	64.46	64.5	66.94	65.74	64.23
December Quarter 2008	64.19	64.41	62.82	63.81	64.56	64.35	66.91	65.52	64.16
September Quarter 2008	64.34	64.76	62.94	63.99	64.73	64.49	67.19	65.8	64.37
June Quarter 2008	63.65	64.01	62.06	63.19	64.13	63.77	66.03	64.79	63.63
March Quarter 2008	62.69	63.26	61.02	62.37	63.09	63.14	65.08	64.02	62.72
December Quarter 2007	61.85	62.43	60.24	61.5	62.22	62.32	64.5	63.15	61.89
September Quarter 2007	61.33	61.82	59.61	60.87	61.73	61.82	64.3	62.53	61.32
June Quarter 2007	61.02	61.31	59.05	60.42	61.36	61.62	63.53	62.06	60.9
March Quarter 2007	60.34	60.62	58.23	59.71	60.49	60.85	62.64	61.22	60.16
December Quarter 2006	60.43	60.47	58	59.84	60.4	60.55	62.65	61.13	60.11
September Quarter 2006	60.55	60.55	58.06	60.06	60.17	60.72	62.32	61.28	60.18
June Quarter 2006	59.99	60.12	57.56	59.4	59.51	60.28	61.27	60.85	59.65
March Quarter 2006	59.02	59.29	56.57	58.63	58.44	59.58	60.24	59.77	58.72
December Quarter 2005	58.56	58.77	56.06	58.08	57.88	59.12	59.72	59.26	58.22
September Quarter 2005	58.35	58.53	55.63	57.83	57.41	58.78	59.41	58.79	57.92
June Quarter 2005	57.78	57.88	55.28	57.24	56.81	58.26	58.78	58.06	57.35
March Quarter 2005	57.46	57.66	54.98	56.9	56.07	57.95	58.28	57.75	57.01
December Quarter 2004	57.14	57.25	54.54	56.56	55.64	57.44	57.94	57.45	56.63
September Quarter 2004	56.7	56.83	54.13	56.17	55.15	56.78	57.82	57.15	56.2
June Quarter 2004	56.41	56.68	53.92	56.01	54.78	56.51	57.34	56.87	55.97
March Quarter 2004	56.22	56.55	53.6	55.67	54.2	55.99	57.07	56.51	55.71
December Quarter 2003	55.67	55.98	53.16	55.09	54.05	55.6	56.86	56.11	55.22
September Quarter 2003	55.24	55.88	52.81	54.82	53.83	55.25	56.58	55.74	54.93
June Quarter 2003	55.14	55.51	52.28	54.4	53.36	55.13	56.65	55.24	54.62
March Quarter 2003	55.12	55.53	52.25	54.5	53.38	54.82	56.45	55.25	54.62
December Quarter 2002	54.46	54.76	51.57	53.34	52.99	54.04	55.94	54.67	53.92
September Quarter 2002	54.12	54.31	51.3	52.9	52.74	53.83	55.61	54.23	53.56
June Quarter 2002	53.83	53.92	50.91	52.42	52.26	53.65	55.44	53.9	53.2
March Quarter 2002	53.47	53.6	50.53	51.91	51.91	52.92	54.95	53.27	52.82
December Quarter 2001	52.97	53.1	50.07	51.5	51.52	52.42	54.8	52.98	52.35
September Quarter 2001	52.51	52.65	49.46	51.01	51.07	51.99	54.42	52.33	51.87
June Quarter 2001	52.36	52.4	49.38	50.91	51.02	52.23	54.27	52.4	51.73
March Quarter 2001	51.96	52.07	48.89	50.55	50.34	51.72	53.67	51.9	51.3
December Quarter 2000	51.27	51.53	48.49	49.95	50.02	51.36	53.65	51.5	50.76
September Quarter 2000	51.03	51.36	48.38	49.89	49.94	51.41	53.36	51.32	50.59
June Quarter 2000	49.25	49.48	46.57	48.09	48.17	49.5	51.61	49.43	48.77
March Quarter 2000	48.79	49.15	46.25	47.8	47.83	49.05	51.09	49.04	48.4

Monthly index, All Groups CPI

Monthly index, All Groups CPI
Period	Sydney	Melbourne	Brisbane	Adelaide	Perth	Hobart	Darwin	Canberra	Australia
May 2026	102.31	101.63	101.95	102.67	102.35	102.48	102.16	102.21	102.09
April 2026	102.87	102.58	102.66	103.38	102.89	103.33	102.73	102.71	102.8
March 2026	102.41	102.57	102.14	102.7	102.45	102.82	102.08	102.25	102.44
February 2026	101.4	101.36	101.05	101.41	101.21	101.46	100.91	101.42	101.31
January 2026	101.61	101.45	101.08	101.27	100.57	101.28	100.83	101.46	101.33
December 2025	101.19	100.98	100.98	101	100.29	101.17	100.71	100.97	100.97
November 2025	100.06	100.07	99.96	100.17	99.56	100.32	100.11	100.26	100.01
October 2025	99.89	100.01	100.21	100.11	99.82	100.46	100.18	99.99	99.99
September 2025	100	100	100	100	100	100	100	100	100
August 2025	99.69	99.54	99.23	99.52	99.65	99.44	99.47	99.56	99.55
July 2025	100.05	99.45	99.21	99.4	99.52	99.2	99.52	100.01	99.63
June 2025	98.34	98.48	97.96	98.3	98.49	98.16	98.36	98.25	98.34
May 2025	98.16	98.23	97.98	98.31	98.46	97.6	98.35	98.23	98.2
April 2025	98.72	98.73	98.17	98.84	98.99	98.41	98.6	98.77	98.68
March 2025	98.09	98.03	97.53	97.93	97.9	97.87	97.98	98.16	97.96
February 2025	97.69	98.1	97.44	98.1	96.45	97.52	97.82	97.97	97.67
January 2025	97.76	98.25	96.94	97.86	95.86	97.73	97.76	97.94	97.58
December 2024	97.57	97.95	96.02	97.77	96.1	97.47	97.69	97.78	97.31
November 2024	96.73	97.2	95.11	96.96	96.81	96.81	97	97.05	96.68
October 2024	96.46	96.83	95.23	96.5	95.69	96.53	96.58	96.74	96.32
September 2024	96.75	97.4	95.06	97.06	95.2	95.45	97.21	97.06	96.54
August 2024	97.04	97.12	94.79	97.01	95.12	95.27	96.92	97.01	96.49
July 2024	97.25	97.19	94.69	97.72	96.18	95.67	97.42	97.54	96.77
June 2024	96.73	96.81	95.75	96.58	95.96	96.44	97.37	96.85	96.52
May 2024	96.09	96.51	95.42	96.63	96	96.38	96.89	96.67	96.17
April 2024	96.69	96.51	95.49	96.91	95.88	96.64	96.91	96.95	96.4

Source: Australian Bureau of Statistics, Consumer Price Index, Australia. Index reference base September 2025 = 100.0.

CPI rent reviews and your lease

Which index applies is a matter of lease wording. Many leases name the All Groups CPI for a specific capital city; many others use the weighted average of the eight capital cities. Check the definitions clause before you calculate, the difference between cities can be material in any given year.

Leases drafted before late 2025 almost always reference the quarterly series. That series continues, so a monthly-CPI lease clause remains rare. If your lease simply says "CPI", the quarterly All Groups figure for the named city is the conventional reading.

CPI clauses often travel with companions: a cap (the increase cannot exceed a fixed percentage), a collar (a minimum increase), or a ratchet (rent never decreases). Retail lease legislation in each state and territory can also restrict how and how often rent can be reviewed. This page is general information, not legal or financial advice; for a specific lease, read the clause or ask your adviser.

Frequently asked questions

What is a CPI rent review?

A CPI rent review is a lease mechanism that adjusts rent in line with the Consumer Price Index, so the rent keeps pace with inflation rather than being renegotiated. The lease specifies which index applies and how often the review happens, most commonly annually.

How is a CPI rent increase calculated?

Divide the CPI index number at the review date by the index number at the previous review (or lease start), then multiply the current rent by the result. This calculator does exactly that, using official ABS index numbers.

Which CPI figure does my lease use, my city's or the national average?

Read the lease's definitions clause. Leases commonly name either the All Groups CPI for the nearest capital city or the weighted average of the eight capital cities (the national figure). If the lease is silent, the weighted average is the most common fallback in practice.

Should I use quarterly or monthly CPI?

Use whichever series the lease references. Almost all leases reference the quarterly series, which the ABS still publishes (calculated since December 2025 as the average of the three monthly indexes). The monthly series only begins at April 2024, so it cannot serve older comparisons anyway.

Can rent go down if CPI falls?

Arithmetically yes, and this calculator will show a decrease honestly. In practice many leases contain a ratchet clause providing that rent does not fall at a review. Check the lease before applying a reduction.

Is there a cap on CPI rent increases?

Only if the lease says so. Some leases cap CPI increases at a fixed percentage, some set a minimum (a collar), and retail lease legislation in some states regulates review methods. There is no general statutory cap on commercial CPI reviews in Australia.

How up to date are the figures on this page?

They reflect the most recent ABS release. The "updated" date near the top of the page shows which release the current figures come from.

Why do the index numbers restart near 100 in 2025?

The ABS re-referenced the CPI in January 2026 so that September 2025 = 100.0 (the old base was 2011-12 = 100). Only the level of the numbers changed, not the percentage movements, so rent calculations are unaffected. Never mix numbers from the old and new bases in one calculation.

Where does the data come from?

From the Australian Bureau of Statistics, Consumer Price Index, Australia (catalogue 6401.0): Table 17 for the quarterly series and Table 1 for the monthly series, All Groups index numbers, published on the ABS website.

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The calculators on this site are provided for general information only. Results are estimates based on published ABS data, do not account for the terms of any specific lease, and do not constitute financial, legal or valuation advice.