---
title: "Costco Promo Codes"
description: "Promo Codes at Costco. Check for offers and shopping options on Refermate."
canonical_url: "https://staging.refermate.com/store/costco/promo-codes"
md_url: "https://staging.refermate.com/store/costco/promo-codes"
last_updated: "2026-10-09T14:29:13.902Z"
---
# Costco Promo Codes

- URL: https://staging.refermate.com/store/costco/promo-codes
- Page: Promo Codes
- Store: Costco
- Current offers: 5 offers
- Store website: https://www.costco.com
- Last refreshed: Friday, October 9, 2026

## Current Offers

### 1. Coupon Code
Type: Coupon code
Code: `AFFNMBR`
Description: AFFNMBR

### 2. Coupon Code
Type: Coupon code
Code: `SUMMERSAMEDAY26`
Description: SUMMERSAMEDAY26

### 3. Coupon Code
Type: Coupon code
Code: `15%`
Description: 15%

### 4. Coupon Code
Type: Coupon code
Code: `COSTX`
Description: COSTX

### 5. $50 Off
Type: Coupon code
Code: `QNZ9GUM`
Description: Online-Only: Take $50 off your order of $500 or more on Costco.com. One-time use code. Valid only on Costco.com purchases. Not valid on prior purchases, in-warehouse, or for certain ineligible purchases (memberships, gift cards, precious metals, etc.). Car
Expires: October 11, 2026

## About Costco

Costco is a United States membership-based warehouse retailer offering bulk-packaged groceries, household essentials, electronics, appliances, furniture, apparel, pharmacy services, and other products through its warehouses and online store. It also provides member services including travel, optical, hearing aids, auto services, and insurance-related offerings.

## Frequently Asked Questions

### 1. How many Costco promo codes are available right now?
Costco currently has 5 current offers listed. Availability and terms can change, so check the offer details before checkout.

### 2. How do I use a promo code at Costco?
When a code is listed, copy it from this page, add your items to your Costco cart, and paste the code in the promo code field at checkout. Check the offer terms to confirm the discount applies.

### 3. When was this Costco promo codes page updated?
Refermate updates this page when its Costco offer or store data changes. Check the current offer details before shopping.

## Explore More

- Site map: https://staging.refermate.com/sitemap.md
- Store sitemap: https://staging.refermate.com/stores/sitemap.md
- Store directory: https://staging.refermate.com/stores