Frequent visitors to Costco Wholesale know that the difference between a $90 cart and a $60 cart often comes down to whether or not you took thirty seconds to clip the right coupon. This week, Costco Wholesale (HQ: Issaquah, WA, roughly 600 US locations) is running a 11% off promotion on Hellmann's Mayo (30 oz) as part of its pantry & canned goods program. The offer is published as a digital coupon valid through 2026-05-28.
Hellmann's Mayo (30 oz) is one of the more frequently restocked items in the pantry & canned goods aisle, which is why Costco Wholesale has chosen it as a featured promotion: shoppers who buy it once tend to buy it again on the same trip the following week. The 11% discount in this campaign is meaningful because it lands above the typical 8–12% promotional band most chains run on their everyday staples. There is no minimum purchase requirement on this offer. Use promo code PANTRYHELL56 at checkout — the code is case-insensitive and works at the register, in the mobile app, and on most curbside pickup orders.
Apply the promo code at checkout in the retailer's online ordering or curbside pickup flow. If you shop in person, double-check the printed receipt before leaving the store; on rare occasions a digital coupon will fail to scan because of an outdated SKU at a single location, and the customer service desk can apply the discount manually within minutes.
Pair this deal with a cashback app like Ibotta or Fetch to layer an additional 5–15% rebate. Many Costco Wholesale shoppers report saving an additional 8–20% on top of the headline discount by combining this coupon with their loyalty program's earned points or fuel rewards. Because Hellmann's Mayo (30 oz) is shelf-stable for at least a few weeks at typical pantry conditions, this is also a reasonable item to stock up on while the discount is live — just be honest about how much your household actually uses week to week.
Fine print: Excludes alcohol, tobacco, gift cards, prescriptions and items prohibited by law. Pricing and availability of the underlying Hellmann's Mayo (30 oz) item may vary by region; the published 11% discount applies to the in-store shelf price at participating Costco Wholesale locations and may differ slightly at express or fuel-station storefronts. Source: Coupon Aisle editorial sample.