The average cost of Brazil's federal public debt rose to 12.68% per year in June [1].
This increase signals a growing fiscal burden on the Brazilian government, as high interest rates now outweigh public spending as the primary driver of debt growth. The current rate represents the highest level recorded since September 2016, when the cost peaked at 12.75% per year [1].
Economists suggest that the cost of servicing this debt is creating a significant bottleneck for the national economy. Dario Durigan said that high interest rates discourage private investment and put pressure on public debt [2]. This dynamic complicates the government's ability to manage its fiscal trajectory while maintaining economic growth.
The financial impact of these rates has been substantial. An economist cited by IstoÉ Dinheiro said that interest payments by the Union consumed nearly R$ 1 trillion in 2025 [4]. These payments represented more than 30% of primary spending during that period [4].
To mitigate these pressures, the Central Bank has utilized specific financial instruments. In 2023, the average balance of voluntary deposits managed by the Central Bank reached R$ 195.8 billion [3]. This mechanism is intended to help reduce the overall public debt burden.
Despite these efforts, analysts note that the current interest rate environment continues to dominate the fiscal landscape. The cost of borrowing remains a critical vulnerability for the federal government as it balances the need for monetary stability against the rising cost of its own obligations [1], [4].
“The average cost of Brazil's federal public debt rose to 12.68% per year in June.”
The surge in debt servicing costs indicates that Brazil is trapped in a cycle where monetary policy intended to fight inflation is simultaneously inflating the cost of government borrowing. Because interest payments are now consuming a massive portion of the primary budget, the government has less fiscal space to invest in infrastructure or social programs without further increasing its debt load.
