Costco has tightened warehouse entry and checkout rules in recent years as membership fees remain a core part of the company’s business model. Even so, the retailer’s current policies still leave a narrow path for some nonmembers to shop or use specific services without paying the annual fee. The detail many shoppers miss is that Costco’s own terms and customer-service guidance spell out those exceptions in plain language.
Costco confirms nonmembers can still make some purchases
Costco updated its current U.S. Member Privileges and Conditions on March 30, 2026, and the company states that members and nonmembers may use Costco Shop Cards to make certain purchases at Costco locations in the United States, Puerto Rico, and Canada, as well as online at Costco.com. The same policy says only members may purchase and reload Costco Shop Cards, which means the workaround depends on a card being bought first by an active member. Costco also states that only members may purchase items in general, making the Shop Card exception one of the clearest carveouts in its own rules.
The company also confirms that a membership is not required to purchase prescription medications. In a published Costco customer-service document dated August 28, 2023, the retailer says customers do not need to be Costco members to purchase Costco Pharmacy prescriptions online or at warehouse pharmacies. Costco says those purchases can be made with cash, debit or ATM cards, Costco Shop Cards, or Visa.
Another limited exception applies to eye care. Costco states that a membership is not required to see an independent doctor of optometry located in or near most Costco warehouses, although only members can buy glasses or contact lenses from Costco Optical. Taken together, those policies show that the “trick” is less a hidden hack than a set of formal exceptions Costco has kept in place.
What that means for shoppers in the U.S.
For shoppers in the United States, the practical impact is national rather than tied to one city or state. Costco’s published membership terms apply across U.S. warehouse operations, and the company specifically says Shop Cards may be used by members and nonmembers at U.S. locations. Costco has not released a state-by-state list of warehouses with different nonmember access rules tied to Shop Card use, so local enforcement details may still vary by store entrance procedures or supervisor review.
The pharmacy policy is also broad in scope. Costco says nonmembers can purchase prescriptions both online and in warehouse pharmacies, and its customer-service pages repeat that this access exists by law. The company has not published a separate breakdown showing whether every U.S. pharmacy counter handles nonmember transactions in the same way, but the stated rule is clear that membership is not required for prescription purchases.
Optometry access is narrower. Costco says shoppers do not need a membership to see an independent eye doctor at most Costco warehouses, which means the availability depends on whether an independent doctor of optometry operates at that location. The company does not state that every U.S. warehouse offers the same setup, and it separately notes that optical merchandise sales remain limited to members.
Why Costco keeps these exceptions in place
Costco’s membership structure is still the baseline. The company says shoppers must scan a membership card at the entrance and show a valid card at checkout, and it notes that membership is required for general warehouse purchasing. Those rules help explain why the Shop Card exception stands out: it allows Costco to preserve a members-first model while still accommodating gift-card transactions and a few regulated service categories.
The pharmacy exception is tied to legal requirements, according to Costco’s own customer-service guidance, which states that no membership is needed to buy prescriptions. The eye-exam carveout reflects a different business structure, since Costco says the doctors of optometry are independent in or near most warehouses, while the sale of glasses and contacts remains restricted to members.
For customers, that means the missed opportunity is real but limited. A nonmember with a Costco Shop Card can access certain purchases, and a nonmember can also use the pharmacy or, in many locations, schedule an eye exam without joining. Costco’s current terms still make clear that these are exceptions to the main rule, not a substitute for full membership access.