Milei Rolls Out a New Peso Trading-Band Regime as Inflation Hits a Seven-Year Low

Two and a half years into Javier Milei's presidency, Argentina's economic story has shifted from one of crisis-era shock therapy to one of mid-cycle calibration. On 2 January 2026, the government launched a new monetary framework designed to address the structural weaknesses of its predecessors while consolidating the inflation gains of the past two years.

How the new band works

The framework adjusts the peso's trading bands in line with inflation. The exchange rate band expands at the rate of inflation prevailing two months earlier — 2.5% in January 2026, set at 2.8% for February. That mechanical link is intended to provide predictable peso depreciation while accumulating central bank reserves and allowing the government to keep importing the discipline of an FX anchor without the rigidity of a hard peg.

The architecture is unusual. Most countries with inflation problems either fix the exchange rate to import discipline (and risk a balance-of-payments crisis when reserves run out) or float fully (and accept the volatility). Argentina's new band is a third path: a moving anchor that depreciates predictably but slowly, with the central bank using the corridor to build reserves.

The numbers

Annual inflation decreased to 31.8% by November 2025 — the lowest level in more than seven years. Argentina's economy grew 4.4% in 2025, bouncing back from a 1.7% contraction in 2024, driven by private consumption (+7.9%), exports (+7.6%) and a 16.4% surge in investment. By the standards of recent Argentine history, those are extraordinary results.

The risks

Three structural fragilities remain. First, the debt wall. Argentina faces maturities exceeding $19 billion in 2026, and the critical question is whether the government can refinance with private investors and international institutions on tolerable terms. Second, reserves: building them remains slow, and any shock to commodity exports or capital flows could re-expose the framework. Third, politics: 2026 mid-term elections will test whether the political coalition behind reform survives a year in which growth normalises and inflation falls less dramatically than in 2024-25.

The reform pipeline

Beyond monetary policy, Milei's 2026 agenda includes congressional approval of the national budget, new regulations to allow mining in glacier areas, and labour, tax and criminal code reforms. The mining proposal in particular has generated international attention given Argentina's lithium and copper potential — and equally significant domestic opposition from environmental groups.

The broader picture

Argentina's recovery has confounded predictions made when Milei took office in late 2023. The shock therapy worked faster than its critics expected and slower than its supporters hoped. The 2026 monetary framework is the first major piece of post-shock institutional design — an attempt to lock in the gains and prevent the country from reverting to the cycle of inflation, crisis and stabilisation that has defined its recent history.

Whether it holds depends on the debt rollovers, the reserve build, and the political durability of a still-controversial president. The runway is real, but it is not long.