Flávio Bolsonaro, a leading contender in Brazil’s upcoming presidential runoff, has positioned fiscal discipline at the forefront of his campaign, promising significant budget cuts aimed at curbing the country’s rising debt and borrowing costs. The 45-year-old senator, son of former president Jair Bolsonaro, took a narrow lead in the first round of voting and now faces left-wing incumbent Luiz Inácio Lula da Silva in the second round set for later this month.

Bolsonaro’s campaign pledges include trimming government spending by 1.5 percent of GDP—around $40 billion—starting from January if elected, through measures such as tax reductions, bureaucracy cuts, and efforts to combat corruption. Public debt in Brazil, Latin America’s largest economy, has risen to roughly 83 percent of GDP under Lula’s administration, prompting concerns from economists about sustainability. Brazil’s budget deficit remains one of the highest among G20 nations, with elevated interest rates currently reaching 13.75 percent as the central bank works to contain inflation.

While Bolsonaro’s fiscal targets are less aggressive than those proposed by Argentina’s Javier Milei, his commitment to retrenchment has been met with cautious optimism by investors. Following the first-round results, Brazilian stocks and the real currency appreciated. Some analysts suggest that if Bolsonaro wins, the resulting boost in market confidence could lead to lower interest rates, thereby easing fiscal pressures over time.

Bolsonaro has indicated plans to reduce the number of government ministries and clamp down on public-sector perks and social security fraud. However, detailed strategies for achieving the ambitious spending cuts remain sparse. Analysts warn that delivering such cuts could prove politically difficult amid a slowing economy and rigid budget structure, where approximately 90 percent is allocated to mandatory expenses like wages and social security. The government’s debt interest payments significantly widen the budget gap, pushing the overall deficit to an estimated 8.9 percent of GDP in 2026, despite a near-balanced primary budget.

The senator’s campaign also proposes rolling back recent tax increases implemented under Lula, alongside the implementation of a yet-to-be-defined debt-to-GDP target that could enforce fiscal discipline. Support for Bolsonaro’s economic agenda was bolstered by strong right-wing performances in recent legislative elections, with his Liberal Party emerging as the largest bloc in Congress, potentially enabling majorities in both houses with allied conservative and centrist groups.

Potential cost-saving measures include targeting excessively high public-sector salaries that exceed constitutional limits and reforms linked to pension and benefit calculations tied to minimum wage increases. Yet these efforts are expected to face resistance from vested interests and require parliamentary approval, particularly for initiatives such as privatizations and tax code revisions.

Some analysts express caution over Bolsonaro’s ability to meet his full fiscal goals, while acknowledging that he could still succeed in passing a new fiscal framework with congressional backing. However, lawmakers’ growing discretionary spending on local projects may complicate efforts to enforce tight budget controls.

Critics from Lula’s Workers’ Party warn that Bolsonaro’s austerity approach could undermine social programs, including school meal initiatives and free medicine provision, which have already faced funding constraints. The campaign’s financial intermediaries stress that Bolsonaro aims to preserve welfare schemes, emphasizing a so-called “compassionate rightwing” stance that avoids placing the adjustment burden on the poorest populations.

Nonetheless, advisors caution that without coordinated fiscal adjustments, Brazil risks a more severe financial crisis, potentially triggered by unregulated market reactions that could plunge the country into a deep recession. The choice, they say, is between implementing tough but controlled reforms or facing destabilizing economic fallout.