Costco Promo Codes – November 2025

Costco is offering a mix of membership-focused promo codes and category-specific deals, with the strongest savings tied to Black Friday and its monthly coupon book. While traditional promo codes remain limited—most Costco discounts apply automatically at checkout for members—a handful of verified codes are active for membership upgrades and select online orders. Below is a complete breakdown of currently active codes, recently expired offers, and key strategies for maximizing Costco savings this month.

Active Membership Promo Codes

CJRTLMN

This code brings down the cost of the Gold Star Executive Membership by $1. Verified as active through November 25, 2025, it’s a small but reliable discount for members looking to upgrade to Executive status. The code is membership-specific and cannot be applied to other tiers or products.

CJPROMO

Offering $1 off the standard Gold Star Membership, this code was last confirmed on November 17, 2025. It’s designed for new member sign-ups and provides a modest entry discount. Ideal for first-time Costco shoppers testing the membership value before committing to higher tiers.

Sitewide and Category Codes

DAY25 / ING21 / Y2024 / LEDGE

These rotating codes typically deliver $15 off orders of $50+, $25 off any purchase, or up to $30 off orders of $100+. Active earlier in 2025, including July, these codes often refresh during major promotional windows but expire quickly. Eligibility varies, and they’re subject to availability based on Costco’s monthly sale calendar. Worth checking during seasonal events, but expiration dates are unpredictable.

SUMMERSAMEDAY25

This code provided $15 off orders of $50 or more for Same-Day Costco deliveries. Valid through July 20, 2025, it has since expired but was widely shared on communites during summer months. Expect similar codes to return for holiday shopping or next year’s warm-weather promotions.

Coupon Book and Automatic Discounts

Costco’s monthly coupon book remains the most valuable savings tool, offering instant discounts without manual code entry. Active through December 21, 2025, current deals include:

• $10 off orders of $150+ across select categories
• $45 off men’s grooming products
• $150 off MacBooks and premium laptops
• $250–$1,550 off major appliances including refrigerators, washers, and dryers

These offers apply both online and in-warehouse for members, with no promo code required. Electronics, beauty products, groceries, and home goods see the deepest discounts. Members receive early access by subscribing to Costco’s email newsletter.

Special Group Discounts

Veteran and Teacher Codes

Eligible veterans and teachers can claim $20 off select memberships or purchases. Verified through November 16, 2025, these codes require proof of eligibility and are periodically refreshed. A solid value for qualifying shoppers looking to join or renew.

Student Discounts via UNiDAYS

New members verified through UNiDAYS receive a $20–$40 Digital Shop Card when signing up for Gold Star or Executive Membership. This ongoing offer is perfect for college students or recent graduates testing Costco’s bulk-buying model. Verification is required and processed through the UNiDAYS platform.

Recently Expired Codes

Coupon forums confirm these codes are no longer active. Shoppers attempting to use them will see error messages at checkout. Codes like SUMMERSAMEDAY25 and $15OFF were popular during their windows but have not been reissued since expiration.

How to Apply Costco Promo Codes

Online: Enter the code in the promo code field during checkout after logging into your Costco account. The discount will apply immediately if the code is valid and your order meets eligibility requirements.

In-Warehouse: Promo codes are rarely accepted at physical locations. Savings come through the coupon book, which automatically applies discounts for members at the register.

Stacking Codes: Costco does not allow stacking multiple promo codes on a single order. Choose the code offering the highest value for your purchase.

Automatic Discounts: Many of Costco’s largest savings—especially from the coupon book—require no manual code entry. Always review your cart and member dashboard to confirm applied discounts before finalizing your order.

Eligibility and Restrictions

Most promo codes require an active Costco membership. Some codes target new sign-ups, while others are exclusive to specific membership tiers like Gold Star or Executive. Group discounts for veterans, teachers, and students require verification through designated platforms or documentation. Same-day delivery codes apply only to eligible zip codes and order minimums. Coupon book deals are members-only and cannot be combined with other promotional codes.

Current & Upcoming Status

As of November 26, 2025, the most reliable Costco savings come from automatic coupon book discounts and membership-related codes like CJRTLMN and CJPROMO. Broader promotional codes such as DAY25 and SUMMERSAMEDAY25 appear sporadically, often tied to major shopping events, but expire quickly and are not consistently available.

For December and beyond, expect Costco to refresh coupon book offers around the 21st of each month, with additional codes likely during holiday shopping windows. Members should monitor email newsletters, Reddit communities, and Costco’s online sale section for newly activated codes. Black Friday and Cyber Monday historically bring the deepest discounts, with $250–$1,550 off big-ticket items like appliances and electronics.

The true value of Costco shopping lies in membership perks and seasonal sales, not traditional promo codes. While codes like CJRTLMN provide modest savings, the coupon book consistently delivers 10–30% off across hundreds of products without requiring manual entry. Shoppers looking for maximum value should prioritize membership enrollment, track coupon book cycles, and verify code expiration dates before checkout.