Costco does not allow shoppers to use regular coupons from the newspaper manufacturer or Internet printouts. Their membership guidelines state that they do not accept manufacturer discount coupons, other than those distributed by Costco, nor do they accept competing coupons. However, they do offer their own in-store “coupons” that they call “Instant Savings.” Due to state and local laws, you can purchase alcohol and prescriptions at Costco without a membership, according to Krazy Coupon Lady. These three items require a receipt and are not coupons you present to Costco when you check out, so you can use them fully.
It's worth noting that because you can't use manufacturer coupons and stack them like you would at other stores like Target, not everything at Costco may be the best deal. This is because Costco doesn't accept coupons from manufacturers, although they do have their own coupons and promotional offers. Manufacturers often simply charge the cost of a coupon program on the original price of their product. You can find some of the best Costco promo codes and Costco coupons at Giving Assistant to help save even more money on Costco orders online. Krazy Coupon Lady bloggers are hesitant to buy cereal, razors and shampoo at Costco, as they know that coupons used elsewhere could give them a better deal. If you don't have a coupon book, or if you're not a member and you shop with a Costco Shop card, stop by the customer service counter to get one.
If you're an enthusiastic coupon clipper, you might do better, in many cases, at your local grocery store. Save more at Costco by accumulating Costco coupons with cashback apps like Ibotta, Checkout 51, and Fetch Rewards.