8 Behaviors That Could Get You Kicked Out of Costco

A Costco membership can pay for itself pretty quickly if you shop there often, especially when you're buying groceries, household supplies, and other everyday essentials in bulk. But the annual fee doesn't give members free rein to do as they please.

Costco has rules for how memberships are used, and the company can step in when shoppers abuse its policies or cause problems in the warehouse. Losing access to the store might seem like a small price to pay for a few free groceries or a disputed return, but it can mean giving up the deals and convenience that made the membership worthwhile in the first place. While not every disagreement will get you banned, some situations can have consequences beyond being asked to leave for the day.

If you want to get more out of your Costco membership, it helps to know which behaviors could get you in trouble. Here's what Costco members should know about where the company may draw the line.

Using someone else's membership card

Letting a friend borrow your Costco card might seem harmless, but memberships aren't transferable. Costco has tightened enforcement with membership scanners at warehouse entrances and photo verification at checkout, including self-checkout. Staff may ask shoppers to show their cards to confirm that the person making a purchase is an authorized member.

Members can generally bring guests into the warehouse, but guests aren't entitled to make purchases using the member's card. If someone without a membership wants to shop regularly, they should look into their own membership or whether they qualify for a Household Card. Costco's membership-card policy explains the rules.

Being rude to Costco employees

Costco employees deal with a lot of customers, but abusive or threatening behavior can have consequences beyond a complaint at the customer service desk. Costco's membership conditions give the company broad authority to revoke a membership, so shoppers who harass staff or become aggressive shouldn't assume their membership is safe. A disagreement over a return or a store policy is one thing; threatening an employee is another, and Costco can decide that a member's behavior has crossed the line. If you believe a decision is unfair, ask for a manager instead of escalating the situation.

Canceling and restarting your membership to avoid the fee

Canceling your Costco membership for a refund and signing up again later might sound like a way to get around the annual fee, but repeatedly using the policy this way can raise red flags. Costco's membership conditions allow the company to revoke memberships, and shoppers shouldn't assume they can keep canceling and rejoining without consequences. If you're unhappy with the cost of membership, it's better to weigh whether the savings justify renewing than to treat the refund policy as a loophole.

Abusing Costco's loose return policy

Costco's return policy is one reason people love shopping there, but some members push it too far. Returning something that didn't work out is one thing, but repeatedly returning used items or trying to get refunds long after the fact is another. In fact, one of the most common reasons Costco revokes memberships is abuse of its return policy.

Costco can revoke a membership if it decides someone is abusing the policy, so don't assume you can return just about anything, as often as you like, without consequences. The company wants members to be happy with their purchases, but that doesn't mean they'll accept every return forever.

Refusing to show your receipt

You might feel like you've done nothing wrong after paying for your shopping, but refusing to show your receipt on the way out can cause problems at Costco. Receipt checks are part of the store's process for verifying purchases, and getting into an argument with employees over the request can make a routine exit more complicated than it needs to be. Costco's membership conditions give the company the right to terminate memberships, so repeatedly refusing to cooperate or turning the situation into a confrontation could put your membership at risk.

Not bringing your membership card

Forgetting your Costco membership card doesn't necessarily mean you'll be turned away, but you can't expect to shop as usual without proving you're a member. Costco requires shoppers to present a valid membership card, and its membership policy explains that cards are nontransferable and must be used by the person they're issued to. If you regularly show up without your card or try to get around the rules, you could run into problems. It's worth keeping your card handy or using Costco's digital membership card to avoid the hassle.

Someone on your membership got in trouble

Costco allows an eligible member to add one person who lives at the same address as a Household Cardholder. The additional card is convenient, but it is tied to the membership account rather than operating as a separate subscription.

Costco's Household Card guidance explains the eligibility rules. If the additional cardholder misuses the membership or is involved in serious misconduct, the primary member may also face questions about the account. Choose the person you add carefully, and make sure they understand the store's rules.

Shoplifting

Trying to leave Costco with unpaid merchandise is a quick way to put your membership at risk. The company can revoke memberships at its discretion, and theft can have consequences beyond losing access to the warehouse. Costco's membership conditions allow it to terminate memberships, so don't assume that paying an annual fee protects you if you're caught stealing. Even switching price labels or deliberately avoiding payment can turn a shopping trip into a much more serious problem.

Bottom line

Getting asked to leave Costco doesn't automatically mean you've lost your membership for good. A disagreement with an employee or a problem during one shopping trip doesn't necessarily lead to a permanent ban, but repeated issues or serious misconduct can have bigger consequences.

For members who rely on Costco for groceries, household essentials, and bulk purchases, losing access can mean giving up savings they might struggle to find elsewhere. If you want to save money on groceries, make the most of your membership without abusing the policies that come with it.

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