Costco Wholesale has reported an 8.2% increase in net sales in the first quarter (Q1) of fiscal 2026, which ended on 23 November 2025. 

The US-based retailer reported net sales of $65.98bn for the period, up from $60.99bn in the same quarter of the previous year. 

Comparable sales increased 6.4% across the business.  

Net income increased from $1.79bn to $2bn, a 11.7% rise year-on-year. 

The company recorded gains of 5.9% in the US, 6.5% in Canada, and 8.8% in other international markets.  Online sales grew 20.5%. 

The quarter included a $72m tax benefit tied to stock-based compensation, while the previous year reflected a $100m benefit. 

Total revenue reached $67.31bn, comprising $1.33bn from membership fees.  

Operating income stood at $2.46bn, up from $2.20bn in 2024.  

Income before income taxes was reported at $2.58bn, accompanied by a $582m tax provision. 

At the close of the quarter, the company operated 923 warehouses worldwide.  

It included 633 locations in the US and Puerto Rico, 114 in Canada, 42 in Mexico, 37 in Japan, 29 in the UK, 20 in Korea, 15 in Australia, 14 in Taiwan, seven in China, five in Spain, three in France, two in Sweden and one each in Iceland and New Zealand.  

Costco also maintained e-commerce platforms in Australia, Canada, Japan, Korea, Mexico, Taiwan, the UK and the US.

In early December 2025, the retailer filed a lawsuit against US President Donald Trump's administration, seeking to pause tariff collections and recover import duties paid under recent global import taxes. 

The action added momentum to a wave of legal challenges triggered by sweeping tariff policies introduced in 2025.