The discovery of accounting inconsistencies has often marked the beginning of institutional crises in privately held companies. Now, one of the largest supermarket groups in Brazil’s Northeast is under investigation by the CVM, in a storyline that feels familiar to the retail sector: a R$ 1.1 billion error in inventory valuation. 

Owner of the Mateus, Camiño Supermercado, Mix Mateus, Eletro Mateus and Novo Atacarejo brands, the company had published a management report that overstated non-existent inventory and its COGS (Cost of Goods Sold). In other words, it artificially inflated its “assets” and profits. 

The CVM criticized the group, demanding explanations and pointing to a lack of transparency. The company confirmed the issue, describing it as a “one-time system error.” The net financial impact of the problem is 3.8%. 

“Accounting adjustments to inventory balances and operational issues related to inventory inefficiencies, however, are distinct matters,” the company stated. 

Despite the explanation, there is clear interconnection between the issues. If the company had to revise inventory while simultaneously reinforcing physical counts, that points to procedural weaknesses. 

“The episode involving Grupo Mateus, with the identification of an error of approximately R$ 1.1 billion in inventory valuation, cannot be treated as a simple routine accounting adjustment. When a publicly traded company informs the market of the need to restate its financial statements due to a relevant error in costing or measurement criteria, it immediately raises a legal and regulatory red flag, especially given the role of the Securities and Exchange Commission,” says Leonardo Roesler, corporate law specialist and partner at RCA Advogados. 

From a more critical standpoint, the billion-real “error” signals vulnerability in accounting, tax and operational procedures. 

In addition, questions raised during the complaint show that the company changed audit firms during the review cycles — something that is not necessarily a problem in itself, but does raise concerns. 

“The sensitive question now is whether the situation at Grupo Mateus is merely a major accounting error or indicative of something bigger. The honest answer at this point is that the existence of a billion-real adjustment, by itself, does not prove fraud, but it does reveal significant fragility in internal controls and costing systems. When a mistake of this magnitude is only identified after an in-depth review, the market interprets it as a sign that previous verification mechanisms were insufficient. Recent experience with major retail and financial companies in Brazil shows that some crises began with announcements about ‘inconsistencies’ or ‘reclassifications’ and, as investigations progressed, evolved into findings of deeper problems in governance, controls or even intentional misconduct,” Roesler explains.