It is the reference stabilization coefficient (Coeficiente de Estabilización de Referencia) that Argentina's Central Bank publishes every day. It follows the inflation INDEC's CPI measures with a lag, and adjusts loans, bonds and some leases.

Is adjusting by CER the same as by UVA?

Almost, but not quite. The UVA follows the CER, though not exactly: on a quarterly adjustment the gap is usually under a tenth of a point. Use the index your lease names.

How do I work out a CER increase?

Divide the CER on the adjustment date by the CER on the day the period started and multiply the rent by that number. The calculator does it for you with the Central Bank's data and shows the math of each adjustment.

Argentina rent calculator by CER

What you pay today and what you will pay at the next increase, with the Central Bank's reference stabilization coefficient.

Arentof thatstartedin ,withincreasesevery anda lease,usingtheCER.

Today

$620,424

+5.8% since Nov 2026

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Next increase · Feb 2027

projected $655,168+5.6%

Monthly CER change

Optimistic14.2% a yearMarket21.4% a yearSteady24.4% a yearPessimistic32.8% a year

1.8%

Nov 2026%

Source: BCRA up to Nov 1, 2026. Market: the inflation expected by the BCRA REM; the other scenarios start from the latest published figure.

Increases

+54.3% over the whole lease

Feb 2026
$500,000
Lease start
May 2026
$545,500
+9.1%
Aug 2026
$586,413
+7.5%
Nov 2026Today
$620,424
+5.8%
Feb 2027
projected $655,168
+5.6%
May 2027
projected $691,858
+5.6%
Aug 2027
projected $730,602
+5.6%
Nov 2027
projected $771,515
+5.6%

The CER increase formula

The CER is a daily coefficient: the increase is the value on the adjustment date divided by the value on the day the period started.

Rent in force times CER on the adjustment date divided by CER at the start of the period, equals New rent

CER over the last 12 months

Value on the 1st of each month, based February 2, 2002 = 1. The values are the ones the Central Bank publishes.

Date	CER	Monthly change
November 1, 2026	863.32	1.8%
October 1, 2026	847.76	1.9%
September 1, 2026	832.33	2%
August 1, 2026	815.93	2%
July 1, 2026	799.76	2.3%
June 1, 2026	781.83	3%
May 1, 2026	758.96	3.1%
April 1, 2026	735.99	3%
March 1, 2026	714.26	2.7%
February 1, 2026	695.39	2.7%
January 1, 2026	677.34	2.4%
December 1, 2025	661.18	2.2%

Which law governs your lease

A lease follows the rule in force on the day it was signed, even if the law changes later. Law 27,551 leases have already ended and Law 27,737 leases end before the end of 2026: almost every lease running today follows Decree 70/2023, which sets no index and no minimum frequency.

Signed	Rule	Index	Adjustment
July 1, 2020 to October 17, 2023	Law 27,551	Central Bank ICL	Yearly
October 18 to December 28, 2023	Law 27,737	Casa Propia coefficient	Every 6 months or more
Since December 29, 2023	Decree 70/2023	Whatever the parties agree, usually CPI	Whatever the parties agree

How the CER increase is worked out

Each adjustment multiplies the rent in force by the CER on the adjustment date divided by the CER on the day the period started: the start of the lease or the previous adjustment.

The Central Bank publishes the CER every day and it follows INDEC CPI inflation with a lag. We read it from the official BCRA API and take the value of the 1st of each month, the date most leases adjust on. If an adjustment falls on a date not published yet, we repeat the latest monthly change; you can pick another scenario, such as what the market expects in the BCRA REM survey.

If your lease started on another day of the month, the result may differ by a few tenths: the CER moves a little every day. Each increase is rounded to one decimal before it is applied, as the market does.

Frequently asked questions

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It is the reference stabilization coefficient (Coeficiente de Estabilización de Referencia) that Argentina's Central Bank publishes every day. It follows the inflation INDEC's CPI measures with a lag, and adjusts loans, bonds and some leases.
Almost, but not quite. The UVA follows the CER, though not exactly: on a quarterly adjustment the gap is usually under a tenth of a point. Use the index your lease names.
Divide the CER on the adjustment date by the CER on the day the period started and multiply the rent by that number. The calculator does it for you with the Central Bank's data and shows the math of each adjustment.