Inventory Turnover › Warehouse Club
Warehouse Club Inventory Turnover Benchmarks 2026
Warehouse clubs report 10x to 12x annual inventory turnover. Costco at 12.1x is among the highest non-pure-grocery rates of any large US retailer and is widely cited as a structural moat.
Named retailer 10-K data
| Retailer | Fiscal Year | Turnover | COGS | Avg Inventory |
|---|---|---|---|---|
| Costco Wholesale(COST) | FY24 (ended Sep 2024) | 12.1x | $222.4B | $18.38B |
| BJs Wholesale(BJ) | FY24 (ended Feb 2025) | 10.8x | $17.6B | $1.63B |
Per-retailer notes
Costco Wholesale (COST)
12.1x turnoverBest-in-class for general-merchandise-mix retailer. 4,000 SKU rationalisation, vendor-paid restocking, and member-driven demand certainty all contribute.
Source: Costco 10-K, fiscal 2024
BJs Wholesale (BJ)
10.8x turnoverSmaller East Coast warehouse club. Higher fresh and perishables mix than Costco; comparable per-warehouse productivity.
Source: BJs Wholesale 10-K, fiscal 2024
Why Costco turns 12x while Walmart turns 9x
Costco discloses in their annual report and proxy statements that they carry approximately 4,000 SKUs per warehouse. Walmart Supercenters carry 120,000+ SKUs, and Target stores carry 80,000+. Fewer SKUs at higher unit volume produces three turnover advantages:
- Vendor logistics economics. Costco buys in full container or pallet loads. Vendors ship direct to warehouse, often consigning until point of sale, reducing inventory on the books.
- Demand predictability. Membership model means a known customer base with stable purchase patterns. Forecast accuracy is materially higher than open-public retailers.
- Display equals storage. Pallets-on-floor display reduces handling cost and eliminates back-stockroom safety stock for fast movers.
The flip side: Costco intentionally sacrifices product breadth. If you want 7 brands of ketchup, you go to Kroger. Costco offers 1 or 2 and the SKU rationalisation is the operating moat.