Costco is one of the most laid-back stores around. Pay the annual fee, grab a cart, and load up on bulk deals. Simple, right? But even a store this easygoing has limits. The truth is, Costco can cancel a membership at any time, for any reason, and the company doesn’t even have to explain why. That sounds harsh, but in practice, it takes some pretty serious rule-breaking to actually get banned. Here are the ways shoppers have crossed the line.
Being rude or aggressive toward employees
This one seems like common sense, but it happens more often than most people think. Any kind of threatening behavior, verbal attacks, or unwanted physical contact toward a Costco worker can get a membership pulled on the spot. A former employee shared a story online about a member who kept sneaking up on a sample worker and tickling her. After being warned multiple times, the man did it again. The manager walked over, took his card, and escorted him right out the door. That was the end of his Costco days.
The problem goes deeper than awkward encounters, though. According to the National Retail Federation, nearly four out of five companies have seen a rise in customer-on-employee incidents. Abusing an employee at Costco won’t just end a membership. In one case, a customer repeatedly stalked and harassed a worker, and Costco itself was found guilty for not stepping in sooner. After that lawsuit, it’s safe to say the company takes these situations much more seriously now. So treat the staff well. They’re just doing their jobs.
Canceling and renewing to dodge the fee
A Costco membership costs between $65 and $130 a year. That’s not pocket change for everyone. Some members have figured out a sneaky way to skip that fee entirely. Here’s how it works: Costco offers a 100% satisfaction guarantee on memberships. If a member isn’t happy, they can cancel and get a full refund at any time. A small number of people have abused this by canceling about ten months in, getting their money back, and then immediately signing up again. They repeat this every year, essentially shopping for free.
Staff members are well aware of this trick. A former employee shared a story about a man who tried it right at the service desk. After receiving his refund, the man handed the cash right back and asked to start a new membership. He even admitted he’d been doing this for years because he didn’t believe in paying membership fees. The employee checked his history, confirmed the pattern, and deactivated his account on the spot. Costco tracks these things, and once the pattern is clear, the free ride is over.
Returning way too many items
Costco’s return policy is famously generous. Most items can be returned at any time, no questions asked. Electronics have a 90-day window, which is still pretty nice compared to other stores. But some shoppers have taken this kindness and stretched it beyond the breaking point. Think about buying a big-screen TV for a Super Bowl party, enjoying it for the game, and then returning it the next day. Once or twice might slide under the radar. But doing it over and over will absolutely get noticed.
One former employee told a story about two guys who came in to return two TVs. It turned out those were their seventh and eighth returned televisions in 90 days. They always brought them back just before the deadline. The general manager stepped in, processed the return, then laid their membership fee on the counter and wished them well. Both memberships were canceled. Costco wants happy customers, but not ones who treat the return desk like a free rental service.
Sharing a membership card with non-members
Depending on the type of membership, Costco allows members to add one person from their household to the account. Members can also bring up to two guests into the store at a time. But there’s a catch — only the actual cardholder can make purchases. That’s where people start getting creative. Some members hand their card to a friend or family member and let them shop alone. Others try to use someone else’s card at the entrance, hoping nobody checks too closely.
Costco has been cracking down on this in a big way. New card scanners at the entrance pull up a larger photo of the member for quick identification. Staff also ask for backup ID if something looks off. Self-checkout has made it a little easier for non-members to sneak through, so Costco added signs reminding everyone that only paid members can shop. Workers are now checking cards in the self-checkout line too. Letting someone else use a card might seem harmless, but it puts the whole membership at risk.
Stealing from the store
This one should be obvious. Shoplifting from Costco — or anywhere, really — is a fast way to lose shopping privileges and potentially face criminal charges. But what counts as stealing? It goes beyond slipping something into a pocket. Switching price tags on meat, wearing new boots out of the store while leaving old ones behind, or hiding products under a coat all fall under theft. One member was even banned for eating strawberries straight from the box while walking through the store and then refusing to pay.
Another story from a Reddit thread described a man who was eating food off the shelves, tossing the wrappers, and even opened a bottle of wine and drank it inside the store. When he got to the exit, the police were already waiting. Employees aren’t immune either — several have been fired for the same offense. Interestingly, some people who stole minor items as kids decades ago have been allowed back in. But for adults, the consequences are quick and serious.
Getting banned means everyone on the account loses out
Here’s something many people don’t realize: if one person on a Costco account gets banned, everyone else on that same account loses their membership too. When a Costco membership is set up, the main member can add one additional person from the same household. Both people get their own card, but everything is tied to a single account. So if the second cardholder does something that gets them kicked out, the primary member also loses access. That’s a tough pill to swallow for someone who did nothing wrong.
To make it worse, Costco isn’t required to explain exactly what happened. A former employee shared that when someone on an account gets caught stealing, the notes in the system are kept pretty vague. It might just say something like “Membership canceled by Loss Prevention.” The other person on the account might never get the full story. So be careful about who gets added to a membership. One person’s bad decision can ruin it for both cardholders.
Showing up without a membership card
Forgetting a wallet or a specific card happens to everyone. But Costco is a members-only club, and the rules are strict about it. A membership card is needed to get through the front door and again at checkout. Without one, the staff will ask the shopper to leave. That might sound harsh, but it’s been the policy from day one. One member was seen giving the door greeter a hard time about showing his card. A manager stepped in and gave a simple choice: show the card, or have the membership canceled entirely.
Printed copies and photos of a card won’t work either, since those can be easily copied or shared. The good news? Costco has a digital option now. The Costco app lets members upload their card information and show it on their phone screen for entry. That’s a lifesaver for anyone who tends to leave things behind. Still, it’s worth knowing that if a card doesn’t have a photo on it, Costco may ask for a passport or legal ID as backup.
Skipping the receipt check at the exit
Ever notice the person standing at the exit checking receipts and marking them with a highlighter? That’s not optional at Costco. Some shoppers at other stores have pushed back against receipt checks, arguing they shouldn’t have to prove they paid for something they just bought. At those stores, the checks are often voluntary. But at Costco, it’s a whole different situation. The receipt check is built right into the membership agreement that every member signs when they join.
The membership terms clearly state that the company reserves the right to inspect containers, bags, and backpacks when entering or leaving the warehouse. All receipts and merchandise will be checked before leaving. Unlike other retailers where the check is more of a suggestion, at Costco it’s a condition of shopping there. Refusing to cooperate or causing a scene over it could put a membership on the line. It usually takes just a few seconds, so it’s not worth the argument.
The hidden clause that lets Costco cancel anytime
Most people sign up for a Costco membership without reading every word of the fine print. That’s normal — who reads terms and conditions these days? But buried in those conditions is a clause that gives Costco a surprising amount of power. The membership agreement says the company “reserves the right to refuse membership to any applicant, and membership may be terminated at Costco’s discretion and without cause.” That means, technically, Costco doesn’t even need a reason to take a card away.
On top of that, the terms say all membership cards remain the property of Costco and must be returned if requested. The rules can also change at any time without notice. There’s even a dress code — shirts and shoes are required in all warehouses. While it’s unlikely Costco would cancel a membership for no good reason, knowing these rules exist is important. Being a member is less of a right and more of a privilege that Costco can take back whenever it sees fit.
At the end of the day, keeping a Costco membership is pretty simple. Pay the annual fee, be respectful to staff, don’t try to game the return policy, and follow the basic rules. Most of these offenses come down to people pushing boundaries way too far. Costco goes out of its way to keep members happy, and the store rarely cancels memberships without a good reason. Just shop honestly and treat the place — and the people working there — with a little common respect.
