Even generous returns cannot overcome investor anxiety
Em um momento em que o Brasil oferece rendimentos que superaram os picos da crise institucional de 2016, o mercado ainda recusa parte dos títulos públicos indexados à inflação — um sinal de que a generosidade dos juros não é suficiente para apagar a desconfiança sobre a trajetória fiscal do país. Na manhã de terça-feira, o Tesouro Nacional realizou dois leilões: um bem-sucedido para títulos pós-fixados, outro marcado pela demanda insuficiente para as NTN-Bs, com apenas 88,5% do volume ofertado encontrando compradores. O que está em jogo não é apenas uma leilão fraco, mas a pergunta mais antiga das finanças públicas: até que ponto um governo pode gastar além do que arrecada antes que os credores exijam um prêmio que ele não pode pagar?
- Mesmo com rendimentos de IPCA+8,53% — superiores aos exigidos durante o impeachment de Dilma Rousseff — investidores recusaram parte significativa dos títulos públicos ofertados pelo Tesouro.
- No segmento de curto prazo, a demanda colapsou para apenas 70% do volume disponível, revelando que a aversão ao risco supera a atração de retornos historicamente elevados.
- A pressão vem de múltiplas frentes: déficits primários persistentes, expectativas de inflação acima da meta, juros americanos em alta e riscos climáticos ligados ao El Niño comprimem qualquer margem de alívio.
- O Copom não deve cortar juros nas próximas duas reuniões, e o mercado já precifica um cenário de taxas elevadas por mais tempo, encarecendo progressivamente o financiamento da dívida pública.
- O governo ainda consegue se financiar — o leilão de títulos pós-fixados foi integralmente absorvido —, mas o custo cresce e o apetite por instrumentos de longo prazo protegidos da inflação está secando.
Na manhã de terça-feira, o Tesouro Nacional foi ao mercado com uma proposta que, em outros tempos, teria atraído filas de compradores: títulos indexados à inflação pagando mais de 8,5 pontos percentuais acima do IPCA, rendimento superior ao exigido durante a crise do impeachment de 2016. Mesmo assim, os investidores ficaram de lado.
Os dois leilões do dia contaram histórias opostas. Os títulos pós-fixados, atrelados à Selic, foram absorvidos integralmente — R$ 23,8 bilhões negociados sem sobras. Já as NTN-Bs, instrumentos preferidos de quem poupa no longo prazo, encontraram demanda para apenas 88,5% do volume ofertado. No vencimento mais curto, com os maiores rendimentos, apenas 70% dos papéis encontraram compradores.
João Gabriel Abdouni, analista de renda fixa da EQI Research, apontou o nó central: o crescimento dos gastos públicos combinado com déficits primários persistentes corrói a confiança na sustentabilidade das finanças do país. Investidores já não questionam apenas se os juros vão cair — questionam se o governo conseguirá honrar sua dívida sem recorrer à inflação ou a alguma forma de reestruturação.
O cenário externo amplifica a pressão doméstica. O Federal Reserve americano deve elevar juros até dezembro. O petróleo subiu por tensões geopolíticas. O El Niño ameaça a produção agrícola. E o boletim Focus daquele mesmo dia projetou inflação de 5,1% para 2026, acima do teto da meta do Banco Central — afastando qualquer perspectiva de corte de juros pelo Copom nas próximas reuniões.
O resultado é um mercado que precifica risco crescente ao longo de toda a curva de juros. O governo ainda consegue se financiar, mas a cada leilão o custo sobe um degrau. Se a demanda fraca por títulos longos se consolidar como padrão, o Tesouro poderá enfrentar condições ainda mais adversas nos próximos dias.
Brazil's government tried to sell Treasury bonds on Tuesday morning, offering yields that would have seemed extraordinary just a few years ago. The inflation-linked securities came with a sweetener of 8.5 percentage points above inflation—a rate that exceeded what investors demanded during the country's 2016 institutional crisis, when President Dilma Rousseff faced impeachment. Yet even at these levels, buyers stayed away.
The Treasury held two separate auctions that day. The first, for floating-rate bonds tied to the central bank's benchmark interest rate, cleared completely. Investors snapped up R$ 23.8 billion worth. But the inflation-linked bonds—the NTN-Bs that many Brazilians use for long-term savings—told a different story. Only 88.5 percent of what the government offered found buyers. In the shortest-maturity segment, where yields were highest, demand collapsed to just 70 percent. The Treasury had dangled IPCA+8.53% for bonds maturing in 2031, with R$ 151 million on offer. Most of it went unsold.
This gap between supply and demand signals something deeper than a bad auction day. It reflects a market gripped by risk aversion, where even generous returns cannot overcome investor anxiety about Brazil's fiscal trajectory. The yields themselves had already climbed to levels not seen since late May, hovering above 7.8 percent on the longer-dated IPCA+ bonds. That threshold carries historical weight—it marks the peak of the 2016 crisis, one of the sharpest fiscal emergencies in recent Brazilian memory.
The numbers from the auction floor tell the story in miniature. The 2032 inflation-linked bond, which had offered IPCA+8.36% the day before, came back at IPCA+8.32%—a slight retreat. The 2040 bond fell from IPCA+7.71% to IPCA+7.67%. Even the fixed-rate bonds, which had offered 14.92% for 2029 maturity, dipped to 14.89%. These small moves mask a larger tremor: investors are repricing risk upward across the entire curve.
João Gabriel Abdouni, a fixed-income analyst at EQI Research, identified the root cause with precision. The government's spending has grown while primary deficits persist—the gap between what Brazil takes in and what it spends before accounting for interest payments. This combination has eroded confidence in the long-term health of public finances. Investors, he explained, now question whether the government can sustain its debt load without eventually inflating away the problem or defaulting outright.
Multiple pressures converge to keep yields elevated. The central bank's monetary policy committee, known as Copom, is no longer expected to cut interest rates at its next two meetings. Across the Atlantic, markets have already priced in rate increases from the U.S. Federal Reserve through December. Oil prices have spiked due to geopolitical tensions. Brazil faces the prospect of severe weather linked to El Niño. And inflation expectations have drifted higher—the Focus survey released that same day projected 5.1 percent inflation for 2026, above the central bank's target ceiling. With inflation running hot and fiscal concerns mounting, there is little room for the government to lower borrowing costs.
The auction's weak demand for inflation-linked bonds suggests that the market has begun to price in a scenario where rates stay high for longer. Investors are demanding compensation not just for inflation, but for the risk that Brazil's fiscal position will deteriorate further. The government can still borrow—the floating-rate auction proved that—but the cost of doing so is climbing, and the appetite for longer-dated, inflation-protected instruments is drying up. If this pattern continues, the Treasury may face even steeper borrowing costs in the days ahead.
Notable Quotes
Rising government spending and recurring primary and nominal deficits have amplified investor concerns about the long-term sustainability of public finances.— João Gabriel Abdouni, fixed-income analyst at EQI Research
The Hearth Conversation Another angle on the story
Why would investors pass up 8.5% above inflation? That sounds like a real return.
It does on paper. But the market is asking whether that return is enough to compensate for the risk that Brazil's government can't sustain its debt. When fiscal concerns spike, even generous yields don't attract buyers.
The article mentions this was the yield level during the 2016 crisis. Does that mean we're back in crisis territory?
Not quite the same, but the comparison is telling. It means investors see similar risks now—questions about whether the government can manage its spending and deficits without eventually inflating or defaulting. The fact that yields had to climb this high just to attract partial demand suggests the anxiety is real.
The short-term bonds sold only 70%. Why would those be harder to sell than longer ones?
Counterintuitively, the short-term bonds offered the highest yields—IPCA+8.53%. You'd think that would draw buyers. But it signals to the market that the government expects rates to stay elevated for a while. Investors may be hesitant because they think they'll get better terms if they wait.
What about the floating-rate bonds that sold out completely?
Those are different animals. They're tied to the central bank's benchmark rate, which moves with policy. Investors know what they're getting because the rate adjusts automatically. There's less uncertainty. The inflation-linked bonds require a judgment call about long-term fiscal health—that's where the doubt crept in.
So what happens next if demand stays weak?
The government still needs to borrow. If investors keep demanding higher yields, the cost of servicing Brazil's debt rises, which makes the fiscal problem worse. It becomes a vicious cycle—worse fiscal outlook pushes yields higher, which makes borrowing more expensive, which worsens the outlook further.