Lula’s Record Veto Rejections Force Executive to STF, Heightening Brazil Political Risk

President Luiz Inácio Lula da Silva’s administration has suffered a record number of legislative defeats, with Congress overturning nearly half of his presidential vetoes, a systemic trend that is driving the Executive branch to rely on the Supreme Federal Court (STF) to settle political disputes. In the first three years of the administration, Congress analyzed 87 presidential vetoes, rejecting 43 of them—a record defeat rate near 49%. This level of institutional tension has directly resulted in the judicialization of politics, where the Executive attempts to suspend or reverse legislation through the courts after failing in the legislature, thereby increasing regulatory uncertainty for investors who track the Brazil stock market and the Real.

This unprecedented gridlock has pushed the administration to systematically seek judicial intervention, transferring critical policy decisions from the legislative process into the less predictable domain of the judiciary. The mechanism creates a direct overhang of political risk, as STF rulings are often harder to anticipate than a legislative vote and can result in sudden, sweeping reversals of established law or policy. Two major areas critical to investor sentiment have been subjected to this process: the Marco Temporal (a law restricting Indigenous land demarcation) and the extension of the payroll tax exemption (desoneração da folha). The Executive vetoed both bills, saw the vetoes overturned by Congress, and subsequently moved to challenge or suspend their effects via the STF.

The immediate impact is a lack of clear-cut policy direction, which complicates business planning, especially for companies exposed to fiscal or regulatory changes. The sudden shift in policy regarding the payroll tax exemption, which affects thousands of companies across 17 sectors, demonstrates how the institutional conflict directly impacts the corporate tax burden and cash flow. For the broader market, this environment of high political risk and institutional instability typically weighs on the Brazilian real (USD/BRL) and contributes to volatility for assets like the Ibovespa (B3 stocks) and the broader Brazil ETF (EWZ).

Investors must now factor STF intervention into regulatory assessments, acknowledging that a legislative victory for Congress does not necessarily represent the final word on a policy. The institutional friction suggests that the administration’s coalition in Congress remains insufficient to protect key executive priorities, leaving the judicial branch as the ultimate arbiter of major policy, ranging from environmental and land use laws to core fiscal measures. What to watch next is the outcome of pending STF challenges, particularly those with major fiscal implications, as these rulings will continue to test the boundaries of institutional power and determine the stability of Brazil's regulatory landscape.