The headline number and what sits beneath it
Costco reported net sales of 23.12 billion dollars for the four weeks ended August 2, 2026, up 10.7 percent from 20.89 billion dollars a year earlier. Total company comparable sales rose 8.9 percent on a reported basis, or 6.6 percent excluding gasoline price inflation and foreign exchange effects, both solid figures for a company operating 933 warehouses worldwide and already comparing against a strong prior year. Over the first 48 weeks of fiscal 2026, net sales reached 273.55 billion dollars, up 10.1 percent.
Buried inside that release is a figure that outpaces every other metric Costco reported: digitally-enabled comparable sales grew 17.7 percent in July alone, and 21.2 percent across the 48-week fiscal year to date. That is roughly triple the total company comparable sales growth rate, and it means an increasing share of Costco's growth is coming from the parts of the business that look nothing like its traditional warehouse model, even as warehouses remain where the overwhelming majority of revenue is actually recognized.
A membership retailer leaning harder on ecommerce
Costco has spent years being cited as the retailer least dependent on ecommerce, built on a model where members drive to a warehouse specifically to buy in bulk, an experience that seemed resistant to the shift toward digital shopping happening across the rest of retail. This quarter's digital growth rate undercuts that narrative. A business growing its digital comparable sales at nearly triple the rate of its overall comparable sales is a business where digital is no longer a side channel, regardless of how the company's public messaging still centers the warehouse experience.
The company does not break out what share of total revenue digital represents, which limits how far this trend can be quantified from the outside. What is clear is the direction: digital growth accelerating well ahead of warehouse growth for two consecutive reporting periods signals a structural shift in how members are choosing to transact with Costco, not a temporary blip tied to one month's promotions or product mix. The fact that the 48-week fiscal year figure, 21.2 percent, runs even higher than the single-month July figure of 17.7 percent suggests this is an accelerating trend rather than a one-time spike, which is the pattern that should get a retail strategy team's attention faster than any single month's number.
Reading digital growth as a leading indicator
Costco's digital comparable sales growth is worth reading as a leading indicator rather than a curiosity, because it is happening inside a customer base with unusually high loyalty and unusually low price sensitivity relative to most retail. If members who already have every incentive to drive to a warehouse are increasingly choosing to transact digitally instead, that is a stronger signal about where consumer behavior is heading than the same shift would be at a retailer whose customers have always shopped online out of convenience rather than choice.
It also raises a fair question about fulfillment economics. Costco has historically kept delivery and ecommerce fulfillment costs down by leaning on a lean warehouse model rather than the dense last-mile infrastructure Amazon and Walmart have built, and sustaining a 17 to 21 percent digital growth rate over multiple quarters will eventually test whether that lighter-weight fulfillment approach can keep up without new capital investment. Costco has not disclosed a specific buildout plan for digital fulfillment capacity, and that silence is itself worth watching, because a growth rate this size rarely stays free for long once it forces new investment in warehousing, delivery partnerships, or app infrastructure to sustain the pace.
Traffic and gas prices tell the rest of the story
Finance director Andrew Yoon noted that comparable traffic rose 3.6 percent globally and 3.3 percent domestically, meaning a meaningful share of the sales growth came from more members showing up rather than existing members simply spending more per visit. Gasoline price inflation, with average worldwide per-gallon prices up 25.2 percent year over year, added roughly 2.9 percentage points to the headline comparable sales figure, a reminder that a chunk of the reported growth rate reflects fuel pricing rather than underlying retail demand.
Stripping out gas and foreign exchange effects brings total company comparable sales down to 6.6 percent, still healthy but a meaningfully more modest number than the 8.9 percent headline. Fresh foods grew a more modest mid-single digits, led by bakery and meat, a category performance that looks unremarkable next to the digital growth rate and underscores how much of this quarter's excitement is concentrated in the online and app channel rather than spread evenly across the business.
Regional growth still favors the U.S. core
U.S. comparable sales led all regions at 10.3 percent reported, or 6.9 percent excluding gas and foreign exchange, ahead of Canada's 4.2 percent and other international markets' 6.0 percent on a reported basis. That gap suggests Costco's growth engine remains firmly anchored in its home market even as the company continues opening warehouses internationally, and it is worth watching whether digital comparable sales growth is similarly concentrated in the U.S. or spread more evenly across Costco's global membership base.
For a company whose membership renewal rates and warehouse economics depend heavily on the U.S. market's density and spending power, a domestic comparable sales rate nearly double Canada's is a reminder that international expansion, while a long-term growth lever, is not yet contributing proportionally to Costco's overall growth rate the way the U.S. business continues to. That imbalance is also where the digital growth story gets more interesting: if U.S. members are driving most of the digital adoption, Costco's international warehouses represent a large pool of members who have not yet shifted their buying habits online, which is either a risk to future digital growth rates or a substantial runway, depending on how quickly international markets follow the domestic pattern.
What competing warehouse and grocery retailers should take from this
Costco's model, built on scarcity, bulk pricing, and a paid membership that rewards frequent visits, was supposed to be relatively insulated from the ecommerce shift reshaping the rest of retail. A digital comparable sales growth rate nearly triple the total business rate says otherwise, and it should push competing warehouse clubs and grocers who have treated digital as a secondary channel to reassess how much of their own future growth will actually come from investments in app experience, delivery partnerships, and digital membership tools rather than physical footprint expansion.
The bigger lesson for retail technology leaders is that even the retailers most associated with a physical-first model are now reporting digital growth that outpaces the core business by a wide margin. Any retail CTO benchmarking digital investment against a warehouse or grocery peer set should treat Costco's numbers as evidence that digital channel investment is no longer optional even for retailers whose entire business model was built around getting members through a physical door.
