MercadoLibre’s top-line growth once masked deteriorating unit economics, but recent quarterly disclosures reveal a sharp squeeze on core e-commerce margins. In Q4 2025, the company reported a gross margin of 44.0%, down from 48.2% in Q4 2024. Management attributes this decline to higher logistics and fulfillment costs, which rose 22% year-over-year as fuel surcharges and third-party carrier fees surged across key markets such as Brazil and Argentina. With free-shipping thresholds lowered to maintain order volume, the company’s contribution margin fell to 9.5%, its lowest level in three years, raising concerns about sustainable profitability in the face of ongoing cost inflation.

MercadoPago, the firm’s fintech arm, continues to incur losses despite rapid revenue expansion. In the full year 2025, payment volumes grew 35% to $54 billion, yet adjusted EBITDA for the segment remained negative 3.2% of revenue, compared with a negative 1.8% a year earlier. Rising credit-loss provisions—up 50% from 2024—have eroded earnings as consumer delinquencies tick up in higher-risk markets. Initiatives such as instant credit and QR-code acceptance have driven adoption, but each incremental dollar of payment volume has become more expensive to process. Unless loss rates stabilize below 2.5%, fintech could continue to drag on consolidated margins.

MercadoLibre’s leadership in Latin American e-commerce is under threat from macroeconomic volatility. Inflation in Brazil accelerated to 4.8% in December 2025, driving consumers toward discount platforms like Shopee and local marketplaces. Meanwhile, the Brazilian real and Argentine peso both depreciated by more than 12% against the U.S. dollar over the past twelve months, increasing the local-currency cost of imported electronics and footwear. In Mexico, consumer confidence remains near a two-year low, and GDP growth forecasts have been revised downward to 1.5% for 2026. These trends suggest that discretionary online spending could stall, limiting MercadoLibre’s addressable market and further pressuring margins as competition escalates.