Costco’s September net revenue reached $30.02 billion, and e-commerce sales increased 19%.

Costco announced its September 2026 sales results for the period ended October 4, 2026. Net revenue rose 13.0% year over year to $30.02 billion, while e-commerce sales increased 19.0%. Global comparable sales rose 11.4% year over year, or 7.6% excluding the effects of gasoline prices and foreign exchange rate changes. Labor Day fell one week later in the United States and Canada than last year, contributing slightly more than 50 basis points to the increases in both total sales and comparable sales for September.