COS promo codes
3 of 28 COS codes passed a checkout test. Each one lists what it covers and when it was last checked.
- Codes listed
- 28
- Verified
- 3
- Sitewide
- 4
- Last checked
- Jan 7, 2026
Verified codes
Accepted at checkout on the date shown10% Off
Verified
10% Off Selected Products at COS
- 10% off your order
- Applies to: Select items
10% Off
Verified
10% Off Storewide at COS
- 10% off your order
- Works sitewide — no specific product required
- Applies to: storewide
10% Off
Verified
10% Off Storewide at COS
- 10% off your order
- Works sitewide — no specific product required
- Applies to: storewide
Unverified codes
Listed as found; some may have ended25% Off
Not verified
25% Off Using COS Promo Code Instantly
25% Off
Not verified
25% Off Your Shopping Basket
25% Off
Not verified
Apply COS Code For 25% Off Your Order
20% Off
Not verified
Today Only! Extra 20% Off Your Order
20% Off
Not verified
20% Off Your Cart
20% Off
Not verified
COS Coupon Code: 20% Off Your Order
20% Off
Not verified
COS Discount Code: 20% Off Your Order
20% Off
Not verified
Save 20% Off Your Order
20% Off
Not verified
Extra 20% Off Sale
20% Off
Not verified
20% Off Storewide at COS
- 20% off your order
- Works sitewide — no specific product required
- Applies to: storewide
20% Off
Not verified
COS Coupon Code: Take 20% Off Your Purchase
15% Off
Not verified
Up to 15% Off Your Purchase with Promo Code
15% Off
Not verified
Enjoy 15% Off Your Order
15% Off
Not verified
COS Coupon Code: 15% Off Your Purchase
15% Off
Not verified
15% Off Storewide at COS
- 15% off your order
- Works sitewide — no specific product required
- Applies to: storewide
15% Off
Not verified
15% Off Select Items at COS
- 15% off your order
- Applies to: Select items
15% Off
Not verified
15% off your order
- Excludes: Savings not valid on sale items.
10% Off
Not verified
10% Off Your Order
10% Off
Not verified
10% Off Your First Order with COS Promo Code
10% Off
Not verified
10% Off Select Items at COS
- 10% off your order
- Applies to: Select items
10% Off
Not verified
10% off your purchase (new customers)
10% Off
Not verified
Take 10% Off Your Order
10% Off
Not verified
10% off your order
$50 Off
Not verified
COS Discount Code: Save $50 on Orders $250+
SALE
Not verified
Use This Code for €5 Off Instantly
How to use a COS code
Show and copy the code
Start with a verified code. The code opens in a new tab and this tab continues to COS.
Fill your bag at COS
Add the items the code applies to. Sale items and some brands are often excluded.
Paste it at checkout
Enter the code in the promo field before you pay. If the total does not change, try the next code.
Questions about COS codes
Does COS have a working promo code right now?
Yes. 3 of the 28 COS codes listed here passed a checkout test, most recently on October 12, 2026.
What is the best COS promo code today?
The strongest offer we have on file is “10% Off Selected Products at COS”, which is verified.
Do COS codes work on everything?
4 of the listed codes are described as sitewide. The rest are limited to selected items, a minimum spend or new customers; each code lists its terms where they are known.
How do I use a COS promo code?
Select “Show code” on this page and copy the code, add your items to the bag at COS, and paste the code into the promo or discount field at checkout before you pay. The order total should update straight away; if it does not, the code does not apply to your basket.
Why did my COS code not work?
The usual reasons are an expired code, sale items that are excluded, a minimum spend that has not been reached, or a code limited to first orders. Codes marked “Verified” were accepted at checkout on the date shown; unverified codes are listed as found and may already have ended.
Codes are collected from public sources and re-checked on a rolling schedule; retailers can end an offer at any time. InfluencerRate may earn a commission when you shop through links on this page.