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Man Receives R$ 50,000 by Mistake, Refuses to Return It, and Court Imposes Exemplary Penalty that Now Applies to Wrong PIX Transactions

Written by Alisson Ficher
Published on 13/11/2025 at 15:49
Updated on 13/11/2025 at 15:50
Decisão do TJMT obriga devolução de R$ 50 mil enviados por engano e aplica indenização, reforçando regras para erros em transferências e PIX.
Decisão do TJMT obriga devolução de R$ 50 mil enviados por engano e aplica indenização, reforçando regras para erros em transferências e PIX.
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A Case of Duplicate Transfer Led the TJMT to Determine Immediate Refund, Monetary Correction, and Compensation, Reinforcing Principles of Good Faith and Impact Also on Errors in Operations via PIX.

A man who received R$ 50 thousand in duplicate via bank transfer was ordered to return the amount, plus correction and interest, as well as to pay R$ 10 thousand for moral damages.

The decision is from the Second Chamber of Private Law of the Court of Justice of Mato Grosso (TJMT) and was based on the principles of objective good faith and the prohibition of unjust enrichment.

The original title contains a typographical error (“for incorrect PIX”), maintained as per editorial instructions.

Duplicate Transfer Generated Judicial Dispute

The case involves process 1022601-23.2021.8.11.0015, related to a loan agreement that provided for payments via transfer.

On the stipulated date, the debtor made the correct transfer, but an operational failure resulted in sending the same amount from another account.

Documents presented in the process, such as statements, receipts, and notarial records, as registered by the court, demonstrated that there was duplicate credit and that the recipient was aware of the mistake.

However, the beneficiary reported that he would keep the amount to offset a supposed debt between the parties.

The Chamber dismissed this justification due to the lack of contractual provision allowing this type of compensation.

According to the ruling, retaining an amount received without legitimate cause violates objective good faith, a principle that guides contractual relationships.

The rapporteur, Judge Maria Helena Gargaglione Póvoas, highlighted that keeping the amount, even after notification about the error, characterizes unjust enrichment, which motivated the determination for restitution.

The understanding of the panel was unanimous in establishing the refund, with adjustment by IPCA and interest by Selic rate, counted from the date of the undue transfer.

Moral Damages Analyzed by TJMT

The conviction included compensation for moral damage.

According to the court, the recipient’s resistance in returning the amount led the author to seek the Judiciary, which, according to the panel, exceeded what is considered common inconveniences in payment situations.

In the vote, the rapporteur noted that there was wear and tear resulting from the repeated and unjustified refusal, as the documents evidenced the error in the bank operation.

As a result, compensation of R$ 10 thousand was established, adjusted by IPCA and with interest from the date of citation.

Criteria Defined for Correction and Interest

The decision establishes that the principal amount must be updated by IPCA and receive Selic rate interest from the date of the duplicate transfer.

The compensation for moral damages follows the same indices, but with interest counted from the citation.

According to civil law specialists consulted by courts in similar decisions, this combination of indices is applied to preserve the real value of the debt and reflect the period of undue retention.

Evidence Considered in the Judgment

The set of evidence included bank statements, transfer receipts, and notarial records of conversations between the parties.

These elements were cited in the process as decisive in proving the duplication and the recipient’s awareness of the error.

With this evidence, the Chamber concluded that the refusal lacked contractual or legal foundation.

Case Relation with PIX Errors

Although the case deals with a traditional bank transfer, recent court decisions have applied a similar understanding for operations via PIX, as it has equivalent operational nature.

According to the Central Bank, the Special Mechanism for Refund (MED) was created to allow for temporary blocking of amounts in situations of fraud or failure, including undue sending.

Specialists explain that MED does not resolve all cases but provides a tool to expedite the analysis of transactions that should not have occurred, according to definitions by the authority itself.

Financial institutions recommend that, in case of incorrect sending, users immediately report the incident in the bank’s app and gather proof of the operation, as well as file a police report when recommended.

Principles Reaffirmed by the Judgment

The TJMT reinforced, in the ruling, that objective good faith and the prohibition of unjust enrichment govern financial operations and contracts.

The court highlighted that the return of amounts received unduly is a legal requirement, regardless of the payment method or the recipient’s intention.

Contract law specialists point out that this understanding has been consistently maintained in different courts across the country when there is evidence of error and unjustified retention.

Practical Guidelines for Financial Operations

The case serves as a reference for users of bank transfers and PIX.

Lawyers consulted in similar decisions assert that the safest conduct, both for those sending and receiving unduly, is to act transparently and document all communications.

For incorrect sends, guidance includes notifying the bank, keeping proof, and seeking legal advice if the amount is not returned.

For those receiving, specialists recommend immediate return, as retention without legitimate cause tends to generate liability.

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Alisson Ficher

Jornalista formado desde 2017 e atuante na área desde 2015, com seis anos de experiência em revista impressa, passagens por canais de TV aberta e mais de 12 mil publicações online. Especialista em política, empregos, economia, cursos, entre outros temas e também editor do portal CPG. Registro profissional: 0087134/SP. Se você tiver alguma dúvida, quiser reportar um erro ou sugerir uma pauta sobre os temas tratados no site, entre em contato pelo e-mail: alisson.hficher@outlook.com. Não aceitamos currículos!

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