The Costco app is the most underused tool in the Costco member ecosystem. Most members who have it use it for one or two things — checking the current Member Savings coupon book, or viewing their digital membership card when they have forgotten their physical card. A small, more commercially savvy group of members uses it as a complete shopping and membership management platform that handles everything from prescription refills to custom cake orders to contactless payment at

The consensus among experienced Costco members is clear: The warehouse can absolutely save you hundreds in 2026, but only if you shop with intention, stick to a list, and focus on areas with proven savings. "I typically go in with a plan — and stick to it. No 'Oh, I absolutely need this blanket' — I stick to my shopping list. Bulk items are only cheaper if you actually use them. You're not saving money if you end up throwing the stuff away because it expired." Thesustainablei