Costco Promo Code & Discount Code March 2026

Declining Dis LIGHT
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Grab Wholesale Savings with Costco Membership
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Expires 31/3/2026
63 used |
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Exclusive
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Fill Up for Less at Costco Petrol Stations
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Expires 31/3/2026
55 used |
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Enjoy Big Savings on Select Costco UK Items from Tomorrow
Costco is launching new offers starting tomorrow with more than £4,100 in total savings across select items. Offers are available online and may differ from warehouse availability.
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Expires 12/4/2026
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Super Offer
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Earn While You Shop with Premium Costco Perks
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Expires 31/3/2026
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Hot Pick
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Get Professional Auto Care for Less at Costco
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Expires 31/3/2026
49 used |
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Great Deal
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Get Up to £1,400 Off Now at Costco UK
A range of product deals across categories with specific discounts shown (e.g., £165 OFF Ninja Luxe Café Premier Bean to Cup Coffee Machine; Silentnight mattresses After 25% OFF; Yardistry pavilion After £400 OFF). Many items show 'After £X OFF' or 'Discount applied at checkout'.
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Expires 12/4/2026
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£10 Off + Free Hot Dog and Soda per Referral — Claim Now at Costco UK
Refer a friend and receive a £10 shopping voucher plus a free hot dog and soda when the referral meets the requirements. Offer available to members as described in the email.
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Expires 30/8/2026
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Pre-order
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Explore Quality In-House Brands at Costco
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Expires 31/3/2026
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Stock Up Today: Thirsty Buddha Sparkling Coconut Water 12 x 330ml at Costco UK
Thirsty Buddha sparkling coconut water 12 x 330ml available in-warehouse and online with price and offer end date.
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Expires 12/4/2026
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Enjoy Pure Grape Refreshment with Kedem 100% Pure Grape Juice 1.89L at Costco UK
Kedem 100% pure grape juice 1.89L listed with price and note that it is available in selected warehouses.
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Expires 31/3/2026
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Save £1.40 Now on Hello Panda Strawberry Filled Biscuits at Costco UK
Hello Panda strawberry filled biscuits (30 x 21g) listed as 'After £1.40 OFF' with price per kg and an offer end date.
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Expires 29/3/2026
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Effortless Pruning with Yard Force 20V Mini Chainsaw Bundle at Costco UK
Yard Force 20V 12cm mini chainsaw bundle with battery and charger listed for in-warehouse and online purchase.
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Expires 31/3/2026
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£15 Off Tetris XL 6ft Tumble Game at Costco UK
Tetris XL 6ft (1.8m) tumble game available in-warehouse and online, marked 'After £15 OFF' with an end date.
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Expires 12/4/2026
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Save £3 on Harris Interior 22 Piece Paint Roller Set for a Professional Finish
Harris Interior 22 piece paint roller set offered in-warehouse and online with a £3 discount.
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Expires 12/4/2026
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Buy Lifetime Bypass Commercial Grade Folding Chair at Costco UK Now
Lifetime Bypass commercial grade folding chair available in-warehouse and online at the price shown.
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Expires 31/3/2026
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Dyson Ball Animal Upright Vacuum Cleaner UP32 for Effortless Pet Hair Removal at Costco UK
Dyson Ball™ Animal UP32 upright vacuum cleaner offered in-warehouse and online with pricing and an offer end date.
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Expires 25/3/2026
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Achieve Salon-Quality Hair with Dyson Airwrap Origin Multi Styler & Dryer at Costco UK
Dyson Airwrap Origin multi styler & dryer (Nickel/Copper) featured in-warehouse and online at the listed price.
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Expires 24/3/2026
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Perfect Espresso Every Time: De'Longhi Rivelia Bean-to-Cup at Costco UK
De'Longhi EXAM450.55.B Rivelia bean-to-cup coffee machine available in-warehouse and online at the displayed price.
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Expires 31/3/2026
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Buy Sony WF-C710N Wireless In-Ear Headphones at Costco UK Now
Sony Wireless In-Ear Headphones model WF-C710N available in-warehouse and online at the listed price.
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Expires 22/3/2026
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£149.99 EX. VAT LG 43 Inch 4K Ultra HD Smart TV - Buy Now at Costco UK
LG 43UA75006LA 43-inch 4K Ultra HD Smart TV offered in-warehouse and online at the listed price.
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Expires 24/3/2026
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Achieve Smoother, Competitive Gameplay with MSI 32 Inch WQHD 180Hz Gaming Monitor at Costco UK
MSI 321CQF E18 32-inch WQHD 180Hz VA gaming monitor available in-warehouse and online; price shown.
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Expires 30/3/2026
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Save £70 on Lenovo IdeaPad Slim 3 Copilot+ PC for Everyday Productivity
Lenovo IdeaPad Slim 3, Copilot+ PC with Snapdragon X, 16GB RAM and 1TB SSD available in-warehouse and online after a £70 reduction.
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Expires 31/3/2026
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£50 Off ASUS Vivobook Go (Ryzen 5, 16GB) at Costco UK for Faster Everyday Performance
ASUS Vivobook Go, AMD Ryzen 5, 16GB RAM, 512GB SSD, 15.6-inch laptop available in-warehouse and online with £50 off.
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Expires 11/4/2026
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Leisure Line Adirondack Faux Wood Garden Chair at Costco UK
Leisure Line Adirondack faux wood garden chair in grey available in-warehouse and online, price shown.
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Expires 31/3/2026
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Save £300 for Cozy Outdoor Dining with SunVilla Dover 7 Piece Wicker Dining Fire Set at Costco UK
SunVilla Dover 7 Piece Wicker High Dining Fire Set with cover available in-warehouse and online; listed 'After £300 OFF'.
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Expires 12/4/2026
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£15 Off Gorilla 5 Tier Heavy Duty Shelf Rack at Costco UK
Gorilla 5 Tier heavy duty modular storage shelf offered in-warehouse and online 'After £15 OFF'.
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Expires 12/4/2026
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£40 Off eufy SoloCam S220 2-Cam Kit at Costco UK — Safer, Smarter Home Security
In-warehouse and online price for the eufy SoloCam S220 2-Cam Kit with HomeBase S380. Price shown and marked 'After £40 OFF'.
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Expires 12/4/2026
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£999.99 EX. VAT Mirador Adjustable Louvered Grill Pergola - Buy Now from Costco UK
New Mirador Adjustable Louvered Grill Pergola offered at £999.99 EX. VAT as featured in the email hero banner.
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Expires 31/3/2026
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Save £4 on Walkers Assorted Biscuits Mini Packs at Costco UK
Walkers Assorted Biscuits Mini Packs 100 x 25g now £17.49 after £4 OFF; offer ends 12/04/2026 and may be available in warehouse.
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Expires 12/4/2026
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Save £45 on eufy SoloCam S220 2-Cam Kit for Clear 24/7 Home Security at Costco UK
eufy SoloCam S220 2-Cam Kit with HomeBase S380 now £174.99 delivered after £45 OFF; discount applied at checkout and the offer ends 12/04/2026.
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£25 Off Tefal Easy Fry Air Fryer for Healthy Crispy Meals at Costco UK
Tefal Easy Fry Essential Dual Air Fryer 8.3L EY901HG now £74.99 delivered after £25 OFF; discount applied at checkout and offer ends 12/04/2026.
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Expires 12/4/2026
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Save £80 on Samsung Jet 75E Complete Vacuum Cleaner for Effortless Deep Cleaning
Samsung Jet 75E Complete Vacuum Cleaner VS20B75ACR5/EU priced at £179.99 delivered after £80 OFF. Offer ends 12/04/2026; warehouse availability may vary.
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Expires 12/4/2026
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£170 Off Ninja Slushi Frozen Drink Maker for Barista-Quality Frozen Drinks
Ninja Slushi Frozen Drink Maker FS301UK now £179.99 delivered after £170 OFF; discount applied at checkout and available while stocks last. Offer ends 12/04/2026.
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£75 Off Insta360 GO Ultra Camera Xplorer Bundle for Effortless Hands-Free Filming
Insta360 GO Ultra Camera Xplorer Bundle now £264.99 delivered after £75 OFF. Offer ends 12/04/2026 as shown in the email.
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Expires 12/4/2026
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LG XBOOM Grab Portable Bluetooth Speaker Offer for Punchy Portable Sound at Costco UK
LG XBOOM Grab by will.i.am portable Bluetooth speaker priced £69.99 delivered. When added to cart with selected LG TVs, get the LG XBOOM Grab free (valid until 29/03/2026 per email).
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Expires 29/3/2026
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£130 Off Dyson AM09 Hot+Cool Fan Heater at Costco UK — Act Fast
Dyson AM09 Hot+Cool™ Jet Focus Fan Heater now £269.99 delivered after £130 OFF; discount applied at checkout. Offer ends 12/04/2026.
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Expires 12/4/2026
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Save £210 on Hisense 75 Inch QLED HD Smart TV for Cinematic Viewing at Costco UK
Hisense 75E78QTUK PRO 75 Inch QLED HD Smart TV now £539.98 delivered after £210 OFF. Discount applied at checkout; offer ends 12/04/2026.
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Expires 12/4/2026
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£50 Off LG 55 Inch 4K Ultra HD Smart TV for Cinema-Quality Picture at Costco UK
LG 55UA75006LA 55 Inch 4K Ultra HD Smart TV offered at £249.98 delivered with discount applied at checkout. Offer ends 12/04/2026.
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Expires 12/4/2026
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£400 OFF SunVilla Dover 7 Piece Wicker High Dining Fire Set at Costco UK
SunVilla Dover 7 Piece Wicker High Dining Fire Set with cover now £1,399.98 delivered after £400 OFF. Offer ends 12/04/2026; warehouse price may vary.
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Expires 12/4/2026
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Save £80 on Nexgrill 3 Burner Gas Barbecue Grill for Perfect Barbecues
Nexgrill 3 Burner Gas Barbecue Grill with cover now £249.98 delivered after £80 OFF. Offer shown in email and available online; price may vary in warehouse.
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Expires 12/4/2026
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Discover Exclusive Insights in Costco Connection Magazine (March/April) at Costco UK
Read the March/April edition of the Costco Connection Magazine featuring a retrospective on The Pokémon Company plus additional articles and sections from Costco Life.
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Expires 28/3/2026
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Save £4.80 on Fairy Platinum Plus + Stain Remover Liquid for Spotless Dishes
Fairy Platinum Plus + Stain Remover Liquid (161 Wash, 4.99L) priced at £20.59 delivered after £4.80 Off; availability may vary in Warehouse.
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Expires 28/3/2026
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£2 Off Vanish Gold Power Gel For Cleaner, Fresher Clothes at Costco UK
Vanish Gold Power Gel (2.25L) available for £8.99 delivered after £2 Off — price per litre and availability may vary in Warehouse.
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Expires 28/3/2026
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£100 Off Siemens EQ900+ Bean to Cup Coffee Machine at Costco UK
Siemens EQ900+ Bean to Cup Coffee Machine (Model: TQ907GZ3) available for £1,899.99 delivered after £100 Off applied at checkout.
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Expires 28/3/2026
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£10 Off LG 65 Inch QNED 4K Ultra HD Smart TV at Costco UK
LG 65 Inch QNED 4K Ultra HD Smart TV (Model: 65QNED92A6A) priced at £989.99 delivered after £10 Off applied at checkout.
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Expires 28/3/2026
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£50 Off Hoover 4-in-1 Mattress Vacuum Cleaner for Allergy Relief and Deep Clean at Costco UK
Hoover 4-in-1 Mattress Vacuum Cleaner (HMC510UV) priced at £69.98 delivered after £50 Off applied at checkout.
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Expires 28/3/2026
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Mother's Day 24 Stem Honey Blossom Bouquet £39.99 at Costco UK
Mother's Day 24 Stem Honey Blossom Bouquet available for £39.99 delivered; product link provided for ordering.
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Expires 27/3/2026
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Claim £100 Off Lenovo Legion Go Handheld Gaming PC Console at Costco UK Now
Lenovo Legion Go (AMD Ryzen Z2, 32GB RAM, 512GB SSD) shown after £100 off; discount applied at checkout with delivered price displayed.
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Expires 27/3/2026
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£20 Off Dyson V8 Advanced Stick Vacuum at Costco UK - Effortless Cleaning
Dyson V8™ Advanced Stick Vacuum Cleaner listed after £20 off; discount applied at checkout and delivered price shown.
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Expires 27/3/2026
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£10 Off Hisense 55E78QTUK PRO 55 Inch QLED TV for Stunning Home Cinema
Hisense 55E78QTUK PRO 55 Inch QLED HD Smart TV shown after £10 off with discount applied at checkout.
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Expires 27/3/2026
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Savings
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Find Luxury Timepieces at Warehouse Prices in Costco
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Expires 31/3/2026
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Super Saver
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Enjoy Peace of Mind with Complimentary Costco Help
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Expires 31/3/2026
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Must Have
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Find The Iconic Food Court Deal at Costco
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Expires 31/3/2026
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Big Savings
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Explore Warehouse Prices at Costco Starting From 99p
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Expires 31/3/2026
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Price Match
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Shop Name-Brand Tech at Wholesale Prices at Costco
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Expires 31/3/2026
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The most popular Costco Promo Code for March 2026

Voucher Code Description	Discount Type	Expiry Date
Get Up to £1,400 Off Now at Costco UK	Online Deal	12 Apr 2026
Get Professional Auto Care for Less at Costco	Online Deal	31 Mar 2026
Earn While You Shop with Premium Costco Perks	Online Deal	31 Mar 2026
Enjoy Big Savings on Select Costco UK Items from Tomorrow	Online Deal	12 Apr 2026
Fill Up for Less at Costco Petrol Stations	Online Deal	31 Mar 2026
Grab Wholesale Savings with Costco Membership	Online Deal	31 Mar 2026

Costco FAQs

Executive Membership costs an additional £35+VAT for Gold Star members or £40+VAT for Business members. You'll earn 2% back on qualified purchases (up to £500 for Gold Star, £750 for Business), so if you spend over £1,750 annually, the upgrade pays for itself.

Costco doesn't typically use traditional discount codes. Instead, they offer member-exclusive pricing, newsletter signup discounts (£15 off first online membership), and promotional pricing in their Hot Buys section. All savings are built into the displayed prices.

Selected grocery items qualify for free delivery with no minimum spend. For other items, delivery costs are included in the online price you see. Costco's approach means no surprise delivery fees at checkout.

Both you and your friend must visit a Costco warehouse together and complete the membership sign-up at the membership desk. You'll both receive £10 Costco vouchers and free Kirkland Signature hot dogs and sodas. The programme runs until August 2026.

Costco offers a risk-free satisfaction guarantee on both membership and merchandise. Electronics have a 90-day return window, while most other items can be returned indefinitely. You can return warehouse purchases to any location or call customer service for online orders.

Yes, NHS workers receive a £10 voucher to use on their first purchase when they sign up for new Costco membership. This is in addition to standard membership benefits and can be combined with newsletter signup discounts.

Costco extends manufacturer warranties to 5 years on televisions and 2 years on computers, tablets, cameras, and major appliances. You also get free technical support for setup and troubleshooting throughout the warranty period, covering both parts and labour.

Gold Star (£35+VAT) is for individuals and families, while Business membership (£25+VAT) is for business owners and self-employed individuals. Business members can add up to six additional cards at £15+VAT each, making it ideal for companies.

Yes, Online-only membership (£35+VAT) gives you access to Costco.co.uk's full range including exclusive online deals. However, you won't be able to shop at physical warehouses or access services like the food court and fuel stations.

Check the Hot Buys section first for the deepest discounts, sign up for the newsletter for exclusive offers, and consider Executive membership if you spend over £146 monthly. The Kirkland Signature brand also offers premium quality at significantly lower prices than name brands.

More Ways to Save Money at Costco

Costco's membership-driven savings go far beyond bulk buying. From cashback rewards to extended warranties, here's how to squeeze every penny of value from your membership while accessing deals that aren't available anywhere else.

How to Apply Your Costco Discount Code

While Costco doesn't typically use traditional discount codes, they offer several ways to access member-exclusive savings and promotional offers.

Sign up for the newsletter to receive £15 off your first online membership, plus exclusive offers delivered to your inbox
Check your membership status at checkout—all published prices are exclusively for members and automatically applied
Visit the Hot Buys section on Costco.co.uk where promotional discounts are already built into the listed prices
Present your membership card at warehouse locations to access member pricing on fuel, food court items, and in-store promotions
Use self-service options online to request price adjustments if you find a lower price after purchase

Remember, Costco's pricing philosophy is "the price you SEE is the price you PAY"—delivery costs and promotional savings are typically included in the displayed price.

Save Up to £750 Annually with Executive Membership

Executive Membership is Costco's premium tier that literally pays you to shop. For an additional £35+VAT annually (Gold Star) or £40+VAT (Business), you'll earn 2% back on qualified purchases.

The maths is straightforward: spend £1,750 annually and the upgrade pays for itself. Spend more, and you're earning money back—up to £500 for Gold Star members or £750 for Business members. Qualified purchases include household essentials, electronics, furniture, travel bookings, and even tyres.

Executive members also get special deals on things like insurance and financial services that other members can't access.

Membership Tiers That Fit Every Budget

Gold Star Membership: £35+VAT

Perfect for individuals and families, Gold Star membership includes a complimentary card for your spouse or domestic partner. You'll get access to all 29 UK warehouses, online shopping, and member-exclusive pricing on everything from bulk groceries to electronics.

Business Membership: £25+VAT

Designed for business owners and self-employed individuals, this tier offers the lowest annual fee while providing access to bulk purchasing and business-focused services. You can add up to six additional cards at £15+VAT each for employees.

Online-Only Membership: £35+VAT

Can't access a warehouse regularly? Online-only membership gives you access to Costco.co.uk's full range, including exclusive online deals and free delivery on selected grocery items. Perfect for those who prefer the convenience of home delivery.

Get £10 Back When You Refer Friends

Costco's refer-a-friend programme runs until August 2026 and rewards both you and your friend with £10 Costco vouchers plus complimentary Kirkland Signature hot dogs and sodas.

Here's how it works: both you and your friend must visit a Costco warehouse together and complete the sign-up at the membership desk. The vouchers can be redeemed at any of Costco's 29 UK warehouses (though not online), making it perfect for your next bulk shopping trip.

Extended Warranties That Actually Matter

Unlike many retailers, Costco's extended warranties provide genuine value without extra cost. When you buy electronics, you automatically receive:

5-year warranty on televisions—compared to the typical 1-year manufacturer warranty
2-year warranty on computers, tablets, cameras, and major appliances—double the standard coverage
Free technical support for setup, troubleshooting, and product guidance throughout the warranty period

This coverage includes parts and labour for malfunctions, and Costco can fulfil warranty claims through repair, replacement, or refund up to the original purchase price.

Hot Buys: Where the Real Deals Live

Costco's Hot Buys section features rotating promotional pricing on popular items, often with substantial markdowns. Recent examples include £180 off Sony Bravia TVs, £500 off garden dining sets, and £1,000 off Tesla Powerwall systems.

These aren't small percentage discounts—Hot Buys typically offer significant pound-off savings that make big-ticket purchases much more affordable. The selection changes regularly, creating that treasure-hunt shopping experience that keeps members checking back.

Risk-Free Shopping with the Costco Guarantee

Costco's satisfaction guarantee covers both membership and merchandise. Not happy with your membership? They'll refund your annual fee in full at any time. If a product doesn't meet your expectations, return it to any warehouse or call their customer service for online purchases.

Electronics have a 90-day return window, while most other merchandise can be returned indefinitely. This removes the purchase anxiety that often comes with big-ticket items and lets you shop with confidence.

Free Delivery Perks for Members

Selected grocery items qualify for free delivery with no minimum spend—unusual in today's delivery-fee landscape. For other items, delivery costs are built into the online price, so you won't face surprise charges at checkout.

Costco's "price you see is the price you pay" approach means the displayed price includes delivery, installation (where applicable), and any promotional discounts.

Customer Support at Costco

Costco offers multiple ways to get help with orders, returns, and membership queries. Members can use self-service options for common tasks like password resets, order tracking, and membership renewals.

Membership queries: 01923 830477
Online purchases: 0800 0324 324 (free phone)
Bulk sales enquiries: 01923 830 521/591/688
Self-service options: Password reset, order returns, delivery tracking, account updates

Due to high call volumes, members may experience longer hold times, but the self-service portal handles most common requests efficiently.

Executive Membership Earns 2% Back on Everything

Costco's Executive Membership upgrade costs £35+VAT annually for Gold Star members (£40+VAT for Business) but pays you back 2% on all qualified purchases—up to £500 per year for Gold Star or £750 for Business members. With free delivery on selected grocery items, extended warranties on electronics, and access to Hot Buys deals, the membership literally pays for itself if you spend over £1,750 annually. Plus, refer a friend and you'll both receive a £10 Costco voucher.

NHS Workers Get £10 Off Their First Shop

NHS workers receive a £10 voucher when signing up for new Costco membership—that's on top of the standard membership benefits. New members also get £15 off their first online membership by signing up for the newsletter, which delivers exclusive offers straight to your inbox. The newsletter often features early access to seasonal sales and member-only deals.

Smart Ways to Maximise Your Costco Savings

Ready to become a Costco pro? Here's how to stack your savings and get the most value from every shop.

Upgrade to Executive if you spend over £146 monthly—the 2% cashback pays for the upgrade cost
Shop Hot Buys first for the deepest discounts on electronics, appliances, and home goods
Use the refer-a-friend scheme to earn £10 vouchers plus free Kirkland Signature hot dogs and sodas
Buy electronics at Costco for extended warranties (5 years on TVs, 2 years on computers) and free technical support
Stock up on Kirkland Signature products for premium quality at significantly lower prices than name brands