Latin America's unfinished battle with inflation leaves the region exposed to the Iran shock

The Middle East conflict has landed on Latin America at an awkward moment. After two years of gradual progress bringing inflation under control, the region's central banks now face the prospect of that effort being undone not by a domestic shock, but by an oil price surge they have no power to prevent.

That is the central warning in a report on Latin American economies published this week by the Bank of Spain, as reported by Bloomberg Linea. While the region has absorbed the immediate financial market turbulence triggered by the US-Israeli attack on Iran better than in comparable episodes — currencies have stabilised, capital has not fled in volume, and growth forecasts have not yet been sharply revised — the inflation threat is proving more durable and more dangerous than the headline figures suggest.

The concern is structural. Core inflation, particularly in services, was already running at close to 4.5% across the region before the conflict began, even as headline rates appeared to be moderating. The combination of higher energy costs and weaker currencies since late February has now fed back into price expectations, with analysts revising their 2026 inflation forecasts to around 4% or above for much of the region. Countries had not completed their disinflation cycles, and the conflict has made completion less likely.

The practical consequence is a reversal of monetary policy expectations that had been building since late 2025. Market pricing now implies end-2026 policy rates roughly 0.8 percentage points higher than anticipated in Brazil, 0.6 points higher in Peru and 0.2 points higher in Mexico, according to Bank of Spain data. Several central banks that were preparing to ease, or had already begun doing so, have been forced to pause or reassess.

Brazil faces the sharpest squeeze. Its central bank had been approaching the start of a rate-cutting cycle after years of historically high borrowing costs, but persistent inflation now threatens to delay that pivot. The consequences for the corporate sector are significant: Fitch Ratings has separately identified Brazilian companies as carrying the weakest interest coverage ratios among major emerging markets, with interest payments consuming between 50 and 75% of EBITDA at some issuers. A prolonged period of tight monetary policy could push fragile balance sheets past their limits.

Mexico presents a different kind of problem. Its central bank delivered a rate cut early in the conflict, a move markets received as a dovish signal that may ultimately require correction if inflation expectations drift further. UBS flagged that Moody's is likely to revise its outlook on the Mexican sovereign this year, though investment-grade status itself is not seen as in jeopardy.

The region's net energy exporters — Brazil, Colombia, Argentina and Ecuador — have a partial cushion. Higher oil revenues have in some cases significantly exceeded the price assumptions baked into their fiscal budgets, creating room to fund measures that shield households from the worst of the energy price rise. In Mexico, the Bank of Spain noted, oil prices reached nearly 80% above the government's budgetary reference price at certain points since the conflict began. As IntelliNews has previously reported, Argentina stands to benefit most among the exporters, given that stronger oil revenues directly support its effort to rebuild foreign exchange reserves.

But for energy importers, Chile most visibly among the larger economies, the shock is unambiguously negative. Santiago recorded one of the sharpest currency depreciations in the region, and faces higher import costs with limited monetary room to respond.

Capital flows have held up, and the Bank of Spain noted that the region has not experienced the kind of abrupt outflows seen in previous episodes of global risk aversion. The institutional and macroeconomic frameworks built over the past decade are providing a buffer that did not exist in 2008 or even 2022. But that buffer has limits. Public debt levels in Brazil and Colombia, already elevated before the conflict began, face an elevated probability of rising further over the coming decade, narrowing precisely the fiscal room those countries would need if the shock deepens.