Oil shock exposes Brazil's fiscal trap as geopolitical risk floods markets.

Oil surged nearly 10% on Monday after the United States and Iran resumed exchanges of missile and drone strikes, with Tehran declaring the closure of the Strait of Hormuz — and no emerging economy has felt the shock in a more complex and contradictory way than Brazil this week.

The Ibovespa slid 1.20% and the dollar closed the session up 0.48% at R$5.131, reversing part of the currency relief accumulated in the second half of the prior week. Nearly the entire term structure of the yield curve is once again trading above 14%, according to Valor Econômico, in a move that the credit market wasted no time in pricing: the optimism that had followed the deceleration of the IPCA to 0.16% in June — versus 0.58% in May — evaporated within hours. The lesson is that Brazil, a net oil exporter, cannot shield the real when global risk aversion dominates capital flows, even if theoretically more favorable terms of trade might suggest otherwise.

Middle East geopolitics finds Brazil in a particularly vulnerable fiscal position. The market for NTN-Bs — bonds indexed to the IPCA — is operating, according to portfolio managers cited by Brazil Journal, in conditions bordering on dysfunctional: real yields have reached in 2026 their highest levels since the Dilma government, with average premiums of 7.6% per year and peaks above 8%, but without a marginal buyer in sufficient volume to absorb the issuances the Treasury needs to carry out. With the nominal deficit again approaching 9% of GDP, the Treasury has resorted to a two-pronged approach: consuming its liquidity cushion to redeem maturities and replacing NTN-Bs with LFTs indexed to the Selic, deepening the debt's vulnerability to monetary policy at a moment when the Central Bank has signaled caution. The oil spike, by re-anchoring longer-term inflation expectations, has made any meaningful monetary easing in the coming months even less likely.

The government of President Lula is today facing a rare accumulation of external and internal pressures on the fiscal agenda. On the trade front, Brasília has ruled out the possibility of an agreement with Washington before Wednesday, when the United States is expected to announce whether it will impose new tariffs under Section 301. The government refuses to negotiate Pix and ethanol as concessions, according to Folha de S.Paulo, and would rather wait for the American decision before calibrating a response based on the Reciprocity Law. The exposure is considerable: a study by SP Negócios mapped that a 25% tariff would hit 93% of the export basket of the municipality of São Paulo to the United States, including manufactured products, chemicals, and industrial goods. Despite that, Lula publicly declared that "there will be no tariff hike" — a phrase he repeated twice before journalists in São José dos Campos, in a reading that the government itself, behind the scenes, does not share.

On the domestic front, fiscal pressures are piling up in layers. The tax on dividends — one of the economic team's central bets to balance the books in 2026 — collected only R$1.54 billion through May, equivalent to 5.13% of the R$29.9 billion projected for the full year. The phenomenon has an explanation: for the first time since the start of the historical series in 2020, Interest on Equity (JCP) exceeded dividends in the distribution of earnings by companies listed on the B3, accounting for 54.3% of the total R$126.7 billion paid to shareholders in the first half. Companies migrated to JCP as a distribution vehicle precisely because the dividend tax made the instrument comparatively more efficient — in a legal arbitrage that erodes the revenue base the government thought it had built.

Complementary Law No. 224/2025, in force since January 2026, added another layer of uncertainty to the tax environment by promoting a linear reduction of federal tax benefits. In response, the CNI asked Finance Minister Dario Durigan for the IPI burden to serve as a benchmark for two years for the new Selective Tax — the so-called "sin tax." The Finance Ministry signaled it would accept only half that period, according to Folha. In parallel, the energy trading sector is going through an unprecedented crisis, with debts and judicial recoveries exceeding R$6 billion involving at least 11 companies — a combined reflection of the rise in interest rates and the structural inflexibility of distributed generation.

On the agricultural side, Mosaic, the American multinational whose shares trade on the NYSE, halted or scaled back operations at seven of its 15 fertilizer production and blending units in Brazil after sulfur prices rose — an input whose prices reacted to the deteriorating scenario in the Middle East. The company's decision is a concern for agribusiness at a moment when El Niño — with a 63% probability of reaching very strong intensity between November and January, according to the U.S. Climate Prediction Center — is already threatening to delay grain planting and reduce harvests in the Center-West and Northeast. Itaú BBA's Visão Agro report warns that the margin between global soybean production and consumption has been virtually erased, making any production shortfall much more impactful than in previous cycles.

The immediate outlook centers on three risk vectors: the American decision on tariffs on Wednesday, whose outcome will set the tone for trade negotiations through the remainder of the election year; the vote on the Freight MP in the Senate, with truckers' stoppages already recorded at the ports of Santos and Salvador and the measure's expiration deadline falling on Thursday; and the trajectory of government bond yields following Monday's repricing, in a market that remains without a consistent marginal buyer for inflation-linked debt. On each of these events, the Central Bank will watch with particular attention any move that re-anchors long-term expectations — and this week's Focus survey has already shown a slight deterioration in inflation projections for more distant horizons.

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