From Brazil
By Marcelo Salamon
04.28.2026
Abstract: This article addresses the critical issue of predatory interest rates in Brazilian banking contracts and its impact on consumer financial health. It explores the legal framework provided by the Consumer Defense Code (CDC) and the Usury Law, highlighting basic consumer rights to transparency and fair contracting. Finally, the text offers practical guidance on how consumers can identify abusive practices, utilize administrative protection agencies like Procon and the Central Bank of Brazil, and seek legal remedies to challenge unfair financial terms.
Introduction
The issue of predatory interest rates in bank contracts is a major concern in the Brazilian economic landscape, especially given the increasing complexity of financial products. Consumers often face contractual terms that include excessive rates, raising serious questions about fairness and transparency in dealings with financial institutions. This phenomenon does not just harm an individual’s financial health; it negatively impacts the entire market by fueling a cycle of default and chronic debt.
Education and awareness regarding consumer rights are essential for individuals to protect themselves from financial exploitation. Brazilian laws, such as the Consumer Defense Code (CDC), provide a legal framework designed to curb abusive practices, including the imposition of exorbitant interest. However, many consumers remain unaware of these rights, leaving them vulnerable to the arbitrary actions of some institutions.
Furthermore, a lack of clarity in contract clauses and the use of technical jargon can make terms and conditions difficult to understand. Therefore, it is crucial for consumers to learn how to identify and challenge rates that may be considered excessive. Knowing your rights is the first step toward breaking down barriers that often seem insurmountable.
In this context, fostering financial literacy is imperative—promoting an understanding of banking practices and strengthening the consumer’s ability to negotiate. With this knowledge, individuals can feel empowered when dealing with banks and resist unfair practices.
Understanding Predatory Interest Rates
Predatory interest rates (often referred to as juros abusivos) are defined as interest rates that exceed legal limits established by Brazilian law or are deemed disproportionate to the loan amount or the type of financial transaction. This practice can significantly damage consumers, leading to excessive debt and compromising their financial stability. The legal definition is rooted in the Consumer Defense Code, which aims to protect citizens against harmful practices by financial institutions.
Common examples of predatory interest can be found in personal loans or financing agreements where the applied rates are significantly higher than market averages. Consumers must stay vigilant; financial institutions often fail to adequately disclose interest rates, leading to confusion and the acceptance of unfavorable terms. Additionally, practices such as interest capitalization (compounding) in periods of less than one year are often considered abusive and should be avoided, as they violate the principle of transparency.
It is also vital to distinguish between legal interest and predatory interest. Legal interest refers to rates within the limits set by legislation. In contrast, predatory interest exceeds these limits or is applied in a way that unfairly strips consumers of their purchasing power. Understanding these differences is crucial for consumers to claim their rights and ensure a more balanced relationship with banks.
Brazilian Laws Protecting the Consumer
Brazil has a robust set of laws designed to protect consumer rights, particularly regarding financial issues. The Consumer Defense Code (CDC), established by Law No. 8.078/1990, is the primary legal tool for consumer protection, ensuring transparency and equity in commercial relationships.
One of the most relevant sections is Article 6, which lists basic consumer rights. This includes the right to clear and adequate information about products and services, including payment terms and financial charges. This means bank contracts must present interest rates clearly, avoiding any misleading practices.
Another significant piece of legislation is the Usury Law (Decree No. 22.626/1933), which sets limits on interest charges for credit operations. Although considered dated by some, it is still applied to determine that contracts cannot stipulate excessive rates. Financial institutions must respect these boundaries, and consumers have the right to contest rates that surpass what is considered fair.
Beyond these laws, court precedents (jurisprudence) and banking ethics codes contribute to effective protection. Consumers are encouraged to stay informed and seek legal counsel whenever they suspect irregularities.
How to Protect Yourself and Seek Your Rights
To protect yourself from predatory interest in bank contracts, the first step is a thorough review of all financial documents. Pay close attention to clauses regarding interest rates, fees, and any “hidden” additional charges. We recommend reading every detail carefully and noting any questions before signing.
The Consumer Defense Code is your best tool for ensuring access to precise information. If you notice interest charges that seem disproportionate, consider seeking guidance from agencies like Procon, which can help mediate complaints with the bank.
Filing formal complaints through official platforms, such as the Central Bank of Brazil and Procon, is an essential step in documenting dissatisfaction. Often, a formal complaint canBRASIL. Lei nº 14.064, de 29 de setembro de 2020 (Lei Sansão). Altera o art. 32 da Lei nº 9.605, de 12 de fevereiro de 1998, para aumentar as penas cominadas ao crime de maus-tratos quando se tratar de cão ou gato. Diário Oficial da União, Brasília, DF, 30 set. 2020.
NETO, Pedro Oliveira Penha. A Proteção Animal na Legislação Penal Brasileira: Uma análise da evolução normativa e os reflexos da Lei Sansão. Revista Jurídica Luso-Brasileira (RJLB), Ano 8, nº 2, p. 741-784, 2022.
SALVADOR, Maiara Agda; TOPOROSKI, Elizeu Luiz; NINGELISKI, Adriane de Oliveira. Maus-tratos aos animais de companhia: uma reflexão a partir da Lei 14.064/2020 e a eficácia das sanções punitivas. Academia de Direito, v. 6, p. 3878-3902, 2024. trigger a contract review or a refund of overpaid amounts. If the issue isn’t resolved administratively, you may consider filing a lawsuit. Consulting a lawyer specializing in consumer rights is fundamental to determining the best legal strategy.
Ultimately, staying informed is your best defense. Consumers must not only know their rights but also act proactively to protect them, ensuring a fairer relationship with financial institutions.23.04.2026
References:
- BRAZIL. Decree No. 22.626, of October 7, 1933. Presidência da República. (The Usury Law, regulating interest rates in credit operations).
- BRAZIL. Law No. 8.078, of September 11, 1990. Presidência da República. (The Consumer Defense Code – CDC, establishing guidelines for consumer protection and financial transparency).
- CENTRAL BANK OF BRAZIL (BCB). Citizen Relationship and Financial Education Guidelines. Brasília, DF. Available for formal complaints and market interest rate averages tracking.
- PROCON. Consumer Protection and Defense Guidelines on Banking Abuse. State and Municipal Public Consumer Defense Registries.
