COS promo codes - 15% OFF for July 2026
Save with our 14 COS promo codes and coupons. Each one is hand-picked by our deals experts, including the 10% off welcome discount.
Senior Voucher Copywriter's Advice: COS has been all over my social media thanks to its high-quality basics. These are often a lower-cost price tag than more statement pieces, but equally as effortlessly stylish. For example, the clean-cut white tee is $45 and can be the base for many outfits, so you're getting your money's worth.
Our page is dedicated to COS promo codes for US shoppers. For UK shoppers, go to our sister-site for COS discount codes on Marie Claire UK.
FAQs
Is there free shipping at COS?
Yes, get free economy shipping at COS with purchases of more than $150. Once you add the correct amount, free shipping will immediately be added. If your order is less than this, economy shipping costs $5 or standard shipping is $10.
Can I get a new customer discount at COS?
Yes, COS has a new customer discount of 10% off your first purchase once you subscribe to the brand's email newsletter. We've tested this ourselves and your code will arrive in your inbox within 5 minutes.
Does COS do a student discount?
Yes, students can get a 10% off discount code on COS purchases. You'll need to sign up to Student Beans for free to verify you're a student. You can apply this student discount to items already discounted with sale.
Can I stack promo codes at COS?
No, you can only use one COS promo code per order. However, students can use their discount on sale items. If you're not a student, we'd recommend adding your 10% off email discount code to high value items for the best saving.
What is COS's return policy?
COS has a 30 day returns window from the date of purchase. If your item is a sale item, then this is 14 days. Your items should be returned unused, unworn, unwashed, undamaged and with any original tags attached. A $7 return fee will be deducted from your refund, when you use the prepaid label.
Hints and Tips
Best items for welcome discount: New shoppers can get a 10% off welcome discount. Before purchasing, it's worth knowing some items are rare to hit sale and could be the perfect candidate for a welcome discount. This includes new dresses like the Sculpted Drop-Waist Midi Dress or the Clean Cut Regular T-Shirt.
Summer sales: Who doesn't love a good love a good sale? The COS summer sale has officially begun with up to 50% off selected clothing. From our research and data from last year, we can predict this to last for two weeks with potential to continue for July.
Earn with preloved: You'll earn COS credit when you return any 'gently used' preloved COS pieces. COS has partnered with ThredUp to help keep clothing out of landfills, and reach their sustainability goals. While each item is designed to last, if you’d prefer, you can pass it on to be resold.
Win a competition: Follow COS on social media for the occasional competition. Last year, COS even had a 'win a wardrobe' competition with no purchase required. All you needed to do was complete an online form. While there can only be one winner, it's worth a follow.
How to use your COS coupon code
- Choose one of our COS promo codes from the Marie Claire website.
- Click 'get discount' to continue to the COS website.
- Start shopping, and when you find an item you like click 'add to bag'.
- Click 'go to shopping bag' when you're done shopping.
- On the new page, you should see a text labelled 'got a promotion code?', click on this.
- Copy and paste your COS promo code into the box which should appear.
- Click 'Add >' and enjoy your new clothing for less.
How we source our codes
At Marie Claire, we have a dedicated team of deal experts, commercial colleagues, and editors who find and negotiate the best promo codes and coupons, as well as produce content aiming to help you shop affordably.
We have a dedicated team of 3 deal experts that are constantly sourcing and testing coupons and promo codes for some of the biggest retailers in fashion, beauty, and beyond to list on our website. They also work with affiliate networks to get a heads-up on future deals and discounts. This means we can update our pages
Meanwhile, our commercial colleagues are key to keeping good relationships with retailers. Their experience with lifestyle vouchers helps them to negotiate the best promo codes and exclusives for you.
On the pages themselves, you’ll find carefully researched saving information for all your beauty, lifestyle, and fashion purchases. Our contributing editors have years of experience in the industry and consistently update the page to reflect new ways to save. You’ll find helpful discount FAQs and saving tips which are checked and verified regularly.
What if my promo code doesn’t work?
- Trying the code and checking if they are valid ourselves.
- Check we don’t have any unique, one-use codes.
- Looking at the offer conditions to make sure you’ve got all the information.
However, there are occasions when details change or the codes may expire without us knowing. If this happens, be sure to contact us by emailing coupons.marieclaire@futurenet.com so we know.
How do we make money?
It’s completely free for customers to use the coupon codes we have above. We’ll get a small percentage of the money spent as a commission from the retailer you shop at. As with most businesses, we do need to make money however this will never impact the price you pay. The brand will give us a small share of the profit for connecting you to them. This helps us keep going whilst saving you more money.
Simply put, the retailer makes a sale, we get a commission, and you get a discount.

Becky Spicer is now a Senior SEO Copywriter at Future Publishing, for lifestyle vouchers. She has created content designed to save you dollars on luxury brands, writing for the likes of Marie Claire and WhoWhatWear. Writing with three years of experience in lifestyle savings, her content has everything from saving at awesome brands to answering your Black Friday questions. Becky can also be found typing her new novel, shopping beauty, or reading one of the latest trending books.
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About COS
COS creates beautiful quality ready-to-wear fashion and accessories to outlast fashion trends. Starting in 2007, COS started from the success of its sister-company H&M. COS is home to excellent quality clothing, inspired by modern times and cities. Each seasonal clothing collection is thoughtfully considered. You'll see high-quality materials - think cashmere and responsible merino wool. You can shop for on-trend womenswear or menswear, ideal for elevating your wardrobe. Or check the accessories section, which also has shoes, jewellery, and perfume. Start shopping COS with our COS promo codes today, and save on your purchase. This page has verified and working COS coupons for our US shoppers. Our sister-site is perfect for UK shoppers with its COS discount codes on Marie Claire UK.
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Becky Spicer
Contributing Writer, Promo Codes
Becky Spicer is now a Senior SEO Copywriter at Future Publishing, for lifestyle vouchers. She has created content designed to save you dollars on luxury brands, writing for the likes of Marie Claire and WhoWhatWear. Writing with three years of experience in lifestyle savings, her content has everything from saving at awesome brands to answering your Black Friday questions. Becky can also be found typing her new novel, shopping beauty, or reading one of the latest trending books.

























