Argentina’s Central Bank Ties the Peso Band to Inflation, Targets Reserve Rebuild

Key Points

1. From January 1, 2026, the peso’s band will move with monthly inflation, not a 1% crawl.
2. The central bank aims to buy $10 billion in reserves by end-2026; it is still more than $10 billion short of the IMF’s 2025 reserve goal.
3. The plan is a test of credibility: steady disinflation with reserves, or renewed dollar stress.

Argentina’s central bank says it will change the exchange-rate regime launched in April under a $20 billion IMF program. The shift starts January 1, 2026, and it is designed to make the managed peso band move faster when inflation does.

Today the band’s limits rise by 1% a month. With inflation higher—2.5% in November—that rule has implied a real strengthening of the peso. It can help the disinflation story, but it also makes the band harder to defend when reserves are scarce.

Reserve scarcity is the backdrop. Recent reporting estimates Argentina is more than $10 billion below the IMF’s 2025 reserve-accumulation target.

In October, worries about dwindling dollars and the durability of the band drove heavier hedging and fresh pressure on the peso. From 2026, the central bank says the band’s floor and ceiling will track the prior month’s inflation rather than a fixed crawl.

Alongside that, it plans a reserve-buying program in 2026 with a stated goal of $10 billion in purchases by end-2026. Coverage of the plan also points to a higher ceiling—up to $17 billion—if external inflows and domestic money demand cooperate.

Officials have framed the next phase as “remonetization,” with the monetary base projected to rise from roughly 4.2% of GDP to about 4.8% by December 2026. Central bank chief Santiago Bausili says the aim is to consolidate price stability and bring domestic inflation closer to international levels.

This matters beyond Argentina because reserve credibility shapes trade and financial spillovers. A stable framework supports imports of energy and industrial inputs and steadier demand from suppliers.

A failed framework tends to end in abrupt adjustment, which hits creditors, regional partners, and broader emerging-market sentiment.

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