Argentina Peso Holds 21% Below Its Ceiling on 5 October
MARKETS · ARGENTINA
Key Facts
- —The country Argentina, South America’s second-largest economy, run by President Javier Milei since December 2023. It is the IMF’s biggest borrower, and its peso floats inside an official band.
- —Why it matters Reserves are the war chest that keeps the peso calm. Argentina has burned through them before, most recently in the 2025 run on the currency.
- —Why now The IMF’s third programme review is still open after a 21 to 29 September mission. The central bank bought dollars in all five sessions last week.
- —What happened The peso held steady on Monday 5 October, with the reference rate at 1,519.25 pesos per dollar (BCRA). Gross reserves last closed at US$48.653 billion on Friday 2 October (BCRA via Ámbito).
- —The numbers On Monday 5 October the band ceiling is 1,924.62 pesos per dollar and the floor 722.28 (BCRA). Monday’s reference rate sits about 21% below the ceiling.
- —What it means for you Holders of Argentine bonds and US-listed shares watch reserves first. For visitors, the official and parallel rates ended Monday less than 1% apart (Ámbito).
- —Still open Whether the IMF signs off the third review, which unlocks the next disbursement, and whether faster buying lasts beyond one week.
- —Prediction markets Polymarket gives a year-end official rate below 1,600 pesos per dollar a 45% chance, and 1,600 to 1,699.99 a 43% chance (5 October, 5:15 p.m. ET).
Argentina’s peso held steady in Buenos Aires on Monday 5 October, with Argentina reserves last reported above US$48 billion. The central bank’s reference rate closed at 1,519.25 pesos per dollar, about 21% below the ceiling of its official band. For US investors in Argentine bonds and shares, those reserves are the cushion that keeps the peso calm.
Gross reserves closed at US$48.653 billion on Friday 2 October, the latest reported figure. The central bank had not published Monday’s purchase or reserve figures by 6 p.m. in Buenos Aires (5 p.m. ET).
A Week of Steady Buying
The Banco Central de la República Argentina (BCRA) bought dollars in all five sessions last week. Purchases ran from US$11 million on Monday to US$160 million on Wednesday, then US$93 million and US$35 million.
That made US$369 million for the week, the most since July, Ámbito and Infobae reported. The bank had bought only US$473 million in all of September, according to TN.
Purchases so far in 2026 reached US$14.696 billion, Ámbito and C5N reported. Infobae said the bank took about 4.9% of Friday’s spot dollar supply of US$718.4 million.
The buying also added pesos to the economy. TN put the injection at about 545 billion pesos (about US$358 million) over four sessions to 2 October.
Where Argentina Reserves Stand
The official BCRA series shows how quickly Argentina reserves can move. Gross reserves stood at US$50.79 billion on 3 September and slid to US$46.09 billion on 30 September.
They then recovered to US$48.65 billion by Friday, helped by purchases and a 0.3% rise in gold, BAE Negocios reported. The central bank has not explained the month-end dip in detail.
Gross reserves include money that is not freely usable, such as bank deposits held at the central bank. The IMF instead targets net reserves, a stricter measure that strips those out.
The government says it beat the net reserves target for the first half of 2026, set at minus US$8.6 billion, Infobae reported. Argentina had missed the end-December target and needed a waiver.
How the Dollar Band Works
Since lifting most currency controls in April 2025, Argentina lets the peso float between a floor and a ceiling. If the dollar hits the ceiling, the central bank sells dollars to defend it.
From 1 January 2026, both limits move each month by the latest official inflation figure, the BCRA says. October’s adjustment uses August’s 1.7% monthly reading.
The ceiling therefore climbs every business day, from 1,920.44 pesos per dollar on 1 October to 1,950.97 on 30 October. The floor drifts lower in step.
On Friday the wholesale dollar fell 4.50 pesos per dollar, or 0.3%, to close at 1,520, Infobae reported. The parallel “blue” dollar traded at 1,560 on Monday morning, El Cronista reported.
On Monday the wholesale dollar closed unchanged at 1,520, its widest gap below the ceiling this year, Ámbito reported. The BCRA reference rate eased to 1,519.25, and the blue dollar ended at 1,550.
The IMF Review and the 2027 Test
The International Monetary Fund approved a US$20 billion, 48-month loan in April 2025. About US$15.8 billion has been paid out after two reviews. Our explainer, Argentina’s IMF Programme Explained: The US$20 Billion Loan, Reserves and What Comes Next, sets out the terms.
A technical mission visited Buenos Aires from 21 to 29 September for the third review. On 1 October the IMF’s communications director, Julie Kozack, said discussions “will continue in the coming weeks”, according to the Fund’s briefing transcript.
To build Argentina reserves further, Economy Minister Luis Caputo last week projected purchases of US$19.438 billion by December, Infobae reported. He linked a bigger war chest to the run-up to the 2027 presidential election.
There is a stabiliser and a risk here. Faster buying and a distant ceiling calm markets, yet country risk stays high (Argentina Country Risk Hits 635 as IMF Backs Programme).
Savers also keep buying dollars at a fast pace, which absorbs much of the export surplus. Our earlier report, Argentina Central Bank Buys US$369 Million in a Week, covered that tension.
What It Means for You
For US investors, reserves are the first test of whether Argentina can pay its dollar bonds and keep the peso steady. Rising reserves and a distant band ceiling tend to support Argentine bonds and US-listed shares.
For travellers, a calm official rate keeps card payments and cash exchange close in cost. The official retail rate at Banco Nación and the parallel rate ended Monday less than 1% apart, Ámbito reported.
The risk is a repeat of September, when gross reserves fell by about US$4.7 billion between 3 and 30 September, BCRA data show.
What Is Not Known
It is not yet known whether the IMF will reach a staff-level agreement in October or attach a waiver. The size and timing of the next disbursement also await a board vote.
It is also unclear whether Argentina reserves keep rising once one-off corporate and provincial dollar inflows fade. September inflation, due this month from INDEC, the national statistics office,, will set November’s band adjustment.
What Prediction Markets Say
On Polymarket, bets on “Argentina Official USD Exchange Rate end of 2026? (Higher Brackets)” priced a year-end rate below 1,600 pesos per dollar at 45% at 5:15 p.m. ET on 5 October. The 1,600 to 1,699.99 bracket stood at 43%.
The market is thin, with about US$22,000 traded and wide gaps between buy and sell prices. Neither bracket moved by more than three points during Monday.
Why we show this: prediction markets turn real-money bets into a live probability that moves within minutes of the news, which is why investors, campaigns and newsrooms in the United States now follow them closely. We show them next to polls and official results, never instead of them.
How much are Argentina’s reserves today?
Gross reserves closed at US$48.653 billion on Friday 2 October 2026, according to central bank figures reported by Ámbito and BAE Negocios. Monday’s figure had not been published by the evening.
What is Argentina’s dollar band?
It is the range in which the peso floats. On 5 October 2026 the floor was 722.28 and the ceiling 1,924.62 pesos per dollar. Both move monthly with the latest inflation figure.
When will the IMF finish Argentina’s third review?
No date is set. The IMF said on 1 October that talks would continue in the coming weeks. Any staff-level deal still needs Executive Board approval.
Sources: BCRA, Régimen de bandas cambiarias (October 2026 table); BCRA statistics API, reserves and reference rate; Infobae, 5 October 2026; Ámbito, 5 October 2026; BAE Negocios, 2 October 2026; TN, 5 October 2026; El Cronista, 5 October 2026; IMF, press briefing transcript, 1 October 2026.
This article was produced by The Rio Times’ automated newsroom system. How we use AI · Report an error · Editorial responsibility: Matthias Camenzind, Editor-in-Chief
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