Brazil's finance ministry scrapped a planned domestic bond auction on Monday, halting the sale of NTN-B inflation‑linked securities originally set for Tuesday. The decision follows a volatile reaction to the central bank’s surprise 25 basis points rate cut and a warning that inflation pressures have worsened. Investors, rattled by the mixed signals, saw yields on CPI‑linked bonds spike.

To steady the market, the central bank intervened in the spot foreign‑exchange market, selling dollars and unwinding part of its FX‑swap line. The operation, known as a “casadão,” aims to keep the local dollar‑interest rate, cupom cambial, from climbing and to support the real’s carry trade. Swap‑rate futures fell while the real modestly outperformed regional peers.

Yield on the May 2029 NTN-B now sits at 8.81%, up more than 80 basis points since the month’s start, reflecting the sell‑off. Treasury officials hinted the cancellation could precede a buy‑back program, but fiscal and political headwinds remain. For investors, the move offers temporary liquidity relief but does not resolve Brazil’s deeper structural challenges.