Background
Elifas Garcia de Sousa brought an action seeking a declaration that a debt did not exist and compensation for moral damages. He alleged that deductions from his retirement benefits arose from a loan agreement he had not made. The disputed agreement refinanced an earlier loan for R$1,241.50, payable in 84 installments of R$29.20; 34 installments totaling R$992.80 had reportedly already been deducted.
The trial court rejected the claims. It found that the transaction documents showed R$1,007.41 was used to discharge outstanding installments on the earlier loan and R$234.09 was deposited into Sousa’s account, and that the signature resembled those on his identification documents. The state appellate court affirmed. After the Superior Tribunal de Justiça’s reporting justice denied relief on the special appeal, Sousa filed an internal appeal, arguing that the bank had not proved the challenged signature’s authenticity and that dispensing with handwriting analysis denied him a proper opportunity to present his case.
The Court’s Holding
The Fourth Panel unanimously denied the internal appeal. It reaffirmed STJ Repetitive Theme 1,061: when a consumer challenges the authenticity of a signature on a banking contract submitted by the financial institution, the institution bears the burden of proving authenticity. That rule, however, does not invariably require handwriting analysis. A bank may satisfy its burden through other suitable evidence.
The lower courts reasonably found the existing evidence sufficient, including the transfer of funds into Sousa’s account, the use of part of the proceeds to discharge the earlier contract, the similarity between the disputed signature and signatures on his identification documents, and the absence of indications of fraud. Because the trial court gave reasons for finding handwriting analysis unnecessary, there was no denial of the right to present evidence. The STJ also found no failure to address Sousa’s arguments: an adverse ruling is not equivalent to an unreasoned judgment. Reconsidering whether the evidence was sufficient or whether expert analysis was indispensable would require reexamining facts and evidence, which STJ Súmula 7 bars in a special appeal; Súmula 83 also applied because the lower court’s ruling accorded with STJ precedent.
Key Takeaways
- Under STJ Theme 1,061, a financial institution bears the burden of proving a banking-contract signature’s authenticity once the consumer challenges it.
- Handwriting analysis is not mandatory when other suitable evidence sufficiently establishes the transaction and the court gives reasons for declining further proof.
- The STJ will not use a special appeal to reassess the sufficiency of the evidentiary record or the necessity of additional expert evidence.
Why It Matters
The decision clarifies that Theme 1,061 assigns the burden of proof but does not prescribe a single method of satisfying it. Evidence tracing the transaction’s proceeds and connecting the challenged agreement to an existing financial relationship may establish a valid contract without handwriting analysis.
For appellate practitioners, the ruling also underscores the distinction between a legal challenge to the allocation of the burden of proof and a fact-dependent challenge to whether that burden was met. The latter ordinarily cannot be revisited by the STJ under Súmula 7.