More than a decade after the massive anti-corruption investigation Operation Lava Jato, Brazil is in the throes of another groundbreaking scandal, this time involving a mid-size lender Banco Master and its high-profile CEO, Daniel Vorcaro. The rapidly expanding corruption scheme, dubbed by former Brazilian Finance Minister Fernando Haddad as likely the “biggest bank fraud in Brazilian history”, has touched the country’s high-ranking political and judicial class, financial institutions, and will have implications for Brazil’s upcoming presidential elections later this year in October. In this article, Richard Fogarty and Beatriz Bechelli examine the unfolding Banco Master scandal and highlight its significance for multinational corporations and investors operating in Brazil. They urge multinational companies and investors with interests in Brazil to closely monitor developments from this burgeoning investigation and proactively prepare for the likely aftershocks to the Brazilian financial, regulatory, and political systems and the inevitable scrutiny of regulatory and law enforcement entities outside of Brazil.
Slow burn before implosion
Banco Master’s collapse in November 2025 had been years in the making. The Brazilian Federal Police (“PF”) had been monitoring the bank for some time, as it experienced exponential growth by offering fixed-term deposits with above-market interest rates without verified liquidity. To simulate the bank’s solidity, Master reportedly carried out transactions with nonexistent assets and then sold those fake credits to Banco de Brasilia (“BRB”), a public bank in Brasília controlled by the Federal District government. BRB disbursed money without proper documentation and artificially raised Banco Master’s accounts.
Cracks within Master’s credit portfolio became more evident when, in September 2025, a proposed acquisition of a majority stake in Master by BRB was rejected by the Brazilian Central Bank, which some attributed to Master’s shaky liquidity figures. Scrutiny prompted by that proposed deal, estimated at BRL 2 billion (around USD 439 million), and the PF investigation into the bank (“Operation Compliance Zero”), later unearthed a web of political connections between the bank’s leadership, namely Vorcaro, and public officials of the highest ranks in Brazil’s executive, legislative, and judiciary – including at least two prominent members of the country’s Supreme Court, Alexandre de Moraes and Dias Toffoli.
A network of deceit
CEO Vorcaro’s connections to high-profile public servants, as the investigation came to uncover, went well beyond the bank’s financial operations. Vorcaro was originally arrested in November 2025, and again in early 2026 as law enforcement authorities named him as being at the helm of a “criminal network” involved in financial fraud, institutional corruption (primarily targeted at Central Bank officials), money laundering and potential ties to organized crime, attempts to hide the existence of financial assets, as well as serious attempts at intimidating witnesses and investigators.
While Vorcaro is now negotiating a plea deal with federal authorities, Operation Compliance Zero has continued to shake the country’s political and business class. The investigation’s second phase, launched on January 14, 2026, has authorized measures that have resulted in an estimated seizure of over BRL 5 billion (around USD 1 billion), as well as dozens of search and seizure warrants involving key players in Banco Master’s operational orbit, including Brazilian tycoon investor Nelson Tenure and Vorcaro’s brother-in-law, Fabiano Zettel. At least two other financial institutions from Master’s orbit have also been liquidated in the context of Compliance Zero: Will Bank and Banco Pleno. Notably, BRB’s former president, Paulo Henrique Costa, was also arrested on April 16, 2026 in connection with the Master scandal.
Credit fraud mechanics and potential ties to organized crime
Outside of BRB, the mechanics of Master’s scheme of utilizing above-market security deposit rates backed by inflated asset guarantees also significantly involved Sao Paulo-based fund manager Reag Trust Distribuidora de Títulos e Valores Mobiliários SA (“Reag”). It is estimated that between at least 2023 and 2024, Banco Master allegedly used Reag’s asset funds to mask the origin of fraudulent credit meant to inflate the bank’s value, among other illegal financial activity for the bank.
In addition to allegedly facilitating illicit transactions for Banco Master, Brazilian authorities have also investigated Reag for financial ties to Primeiro Comando da Capital (The First Capital Command, “PCC”), the Brazilian organized crime syndicate. Running parallel to Operation Compliance Zero, Brazil’s Operation Hidden Carbon (“Carbono Oculto”), led by the Brazilian Tax Authority and partner agencies, found in 2025 that investment funds controlled by Reag were used to launder money for the PCC, the most powerful drug trafficking faction in Brazil with over 2,000 estimated members and recorded activities in over 25 countries. To date, authorities have not formally charged Vorcaro and/or Banco Master of having direct connections to the PCC – but potential points of connection between the criminal organization and Vorcaro’s orbit have and will continue to emerge, posing serious compliance challenges for companies utilizing Brazil’s financial system.
The scandal and the polls: the lead-up to upcoming elections
The Banco Master scandal has taken center-stage in public discourse in the lead-up to an already highly-polarized presidential election. Incumbent President Lula (The Worker’s Party – PT) and Flavio Bolsonaro (Liberal Party – PL), the son of former President Jair Bolsonaro, have been statistically even in recent polling in Brazil – with Flavio slightly edging ahead in a potential runoff election as of April 16, 2026, according to some projections.
Polling has indicated that the Master scandal has begun to sway voters’ priorities for the upcoming cycle. A Quaest polling survey from early 2026 found corruption as the second-highest ranking concern for voters in Brazil. Quaest has also found a 7-percent drop in voters’ trust in the country’s Supreme Court compared to last year’s results, which media outlets have inferred relates to the involvement of Supreme Court justices Alexandre de Moraes and Dias Toffoli in Operation Compliance Zero investigations.
While disapproval ratings for both Lula and Flavio Bolsonaro remain relatively high in recent polling results, it is possible that potential frustrations around developments from the Banco Master scandal will work in favor of right-wing leaning candidates. Following Lava Jato and Jair Bolsonaro’s September 2025 sentencing for a coup attempt after Brazil’s 2022 election, some right-leaning politicians have become more vocal in their critiques of Brazil’s judicial structure, and will likely seek to leverage public opinion connected to Operation Compliance Zero’s links to the Supreme Court.
Private sector compliance challenges
While Brazilian public institutions have borne the brunt of Banco Master’s collapse and aftershocks in the past months, the magnitude of the scandal is poised to touch prominent players within Brazil’s private sector and will likely have ripple effects for multinational companies and investors with interests in Brazil. Already credit card giant Mastercard has been impacted. Will Bank, a Master subsidiary, utilized Mastercard as a payment network before going into liquidation in late 2025. Mastercard has reportedly footed the bill for over BRL 5 billion (around USD 1 billion) in outstanding customer credit card debts and has started to shed its shares of BRB – which it had seized as collateral from Will Bank - to offset the outstanding payments.
The Master scandal is also likely to push reforms to legislation and tighten regulatory oversight of national financial systems. In addition, political shifts stemming from the Compliance Zero investigation ahead of the October presidential and congressional elections will inevitably add pressures to the volatile equilibrium of risk and opportunity for foreign companies in the country. Indeed, the risk perceptions tied to the Brazilian market as a whole could change.
Finally, while it is unclear how Operation Compliance Zero will conclude, the ramifications of the scandal related to PCC’s criminal networks within the banking system may pose significant compliance risks for companies operating in Brazil, already the US government is estimated to be in the late stages of finalizing an order to designate PCC a foreign terrorist organization (“FTO”). Therefore, US and other foreign companies operating in this landscape face increased risks of secondary investigations by national and international regulators and law enforcement agencies, which may face pressures to launch their own independent investigations and disciplinary measures in the face of suspected wrongdoing.
Preparation and prioritization
While planning in the face of ongoing investigations can be speculative, companies and their external advisors should commit to deploying reasonable mitigation strategies to navigate the consequences of the Master collapse and subsequent fallout from the ongoing Operation Compliance Zero investigation.
One such strategy is strengthening companies’ own compliance controls. Assessing current vulnerability points through a fine-tooth comb can arm internal legal and compliance teams and external counsel to adapt to sector- and region-specific operational and compliance risks within the country. This may become particularly important, as noted above, if Brazil-specific FTO designations materialize in parallel to Operation Compliance Zero.
Another recommendation is to prioritize thorough, context-specific due diligence and vetting of third parties and commercial partners on the ground. Equipping teams with actionable understandings of the networks and track record of their counterparts in the country (including political connections and potential exposure concerns, funding streams, and operational integrity) can contribute to more resilient operations in the face of regulatory turmoil.
Finally, it is imperative to engage with external partners with proven capabilities in navigating Brazil’s complex and evolving regulatory, political, and legal landscape. With the true scale of the scandal still unclear but certainly expanding, impacts of the investigations themselves or their aftermath are poised to be far-reaching for those operating in the country. As it was with Operation Lava Jato, whose degree of institutional reach and influence may feel familiar to those navigating the Master case so far, teams committed to proactively monitoring on-the-ground shifts, investigating potential exposures to the scandal and related parties and, lastly, implementing robust internal compliance systems, will be better equipped to navigate expected turmoil from the case over the next few months and potentially well beyond.
