DEALHACK

agents@dealhack$fetch the freshest Costco codes…

5% Off Costco Coupons & Promo Codes September 2026

✓agent-verified & updated·

Today's Current Costco Promo Codes:

15 offers in total
$1
OFF

Save $1 on Most Products (Costco Coupon Code)

worked at checkout

Use This Costco Promo Code for an Additional $1 Off on Most Products with Any Order

  • saves ~$12.00
  • store issued
How We Verify This Code
62
code confidence
likely to work
7
code checks worked
$12.00
median discount
8% of the cart
$171.41
saved in total
across every cart we have seen

Code checks are run against real carts, including plenty this code was never eligible for: most codes only apply to certain products or need a minimum cart. We count the carts it worked on, not the ones it never fit.

The discount amount is measured on real cart totals before and after the code was applied, not taken from the advertised offer.

Code confidence is our agents' read on how likely this code is to work. It isn't a strict measure of success probability: plenty of codes score low and still work at checkout. It was last recalculated .

Costco published this code itself, on its own pages, its newsletter or a feed we take from it.

use code
DEAL

Get a $40 Digital Costco Shop Card

shoppers saved with it

Join as a new Executive Member and enroll in auto-renewal to receive a $40 Digital Costco Shop Card with this coupon.

  • saves ~$0.01
  • community
How We Verify This Code
24
code confidence
worth a try
$0.01
median discount
0% of the cart
$2.21
saved in total
across every cart we have seen

The discount amount is measured on real cart totals before and after the code was applied, not taken from the advertised offer.

Code confidence is our agents' read on how likely this code is to work. It isn't a strict measure of success probability: plenty of codes score low and still work at checkout. It was last recalculated .

Shoppers here submitted this code or reported back on how it went. It gets the same checks as every other code on this page.

use code
5%
OFF

Get 5% Off Your Current Purchase at Costco

worked at checkout

Save Up to 5% Off Any Order by Using This Costco Coupon at Checkout

  • saves ~$0.01
  • store issued
How We Verify This Code
7
code confidence
still worth a try
1
code check worked
$0.01
median discount
0% of the cart
$2,100.77
saved in total
across every cart we have seen

Code checks are run against real carts, including plenty this code was never eligible for: most codes only apply to certain products or need a minimum cart. We count the carts it worked on, not the ones it never fit.

The discount amount is measured on real cart totals before and after the code was applied, not taken from the advertised offer.

Code confidence is our agents' read on how likely this code is to work. It isn't a strict measure of success probability: plenty of codes score low and still work at checkout. It was last recalculated .

Costco published this code itself, on its own pages, its newsletter or a feed we take from it.

use code
FREE
SHIP

Free Shipping on Orders Over $75

Get free shipping on your online orders at Costco when you spend over $75. This offer is available for all members.

Get Deal
DEAL

Get a $50 Digital Costco Shop Card

Join as a new Costco member online and enroll in auto renewal of your annual membership to receive a $50 Digital Costco Shop Card.

  • community
How We Verify This Code
2
code confidence
still worth a try

Code confidence is our agents' read on how likely this code is to work. It isn't a strict measure of success probability: plenty of codes score low and still work at checkout. It was last recalculated .

Shoppers here submitted this code or reported back on how it went. It gets the same checks as every other code on this page.

use code
13%
OFF

Save 13% on Your Current Purchase (Costco Promo Code)

Redeem This Costco Coupon for 13% Off Any Order with Code at Checkout

  • community
Offer Details

Shoppers here submitted this code or reported back on how it went. It gets the same checks as every other code on this page.

use code
5%
OFF

Up to 5% Off Any Purchase - Costco Promo Code

Save Up to 5% on Any Order by Using This Costco Coupon at Checkout

  • saves ~$53.00
  • community
How We Verify This Code
1 of 1
code checks worked
$53.00
median discount
6% of the cart
$53.00
saved in total
across every cart we have seen

The discount amount is measured on real cart totals before and after the code was applied, not taken from the advertised offer.

Shoppers here submitted this code or reported back on how it went. It gets the same checks as every other code on this page.

use code
5%
OFF

Save Up to 5% Off Your Current Order (Costco Promo Code)

Redeem This Costco Promo Code to Get Up to 5% Off Any Order

  • saves ~$54.49
  • community
How We Verify This Code
1 of 1
code checks worked
$54.49
median discount
7% of the cart
$54.49
saved in total
across every cart we have seen

The discount amount is measured on real cart totals before and after the code was applied, not taken from the advertised offer.

Shoppers here submitted this code or reported back on how it went. It gets the same checks as every other code on this page.

use code
$50
OFF

Save $50 Off Any Order with Discount Code

Save $50 on Any Order by Using This Costco Coupon at Checkout

  • saves ~$50.00
  • community
How We Verify This Code
1 of 1
code checks worked
$50.00
median discount
7% of the cart
$50.00
saved in total
across every cart we have seen

The discount amount is measured on real cart totals before and after the code was applied, not taken from the advertised offer.

Shoppers here submitted this code or reported back on how it went. It gets the same checks as every other code on this page.

use code
$55
OFF

Take $55 Off Your Current Purchase at Costco

Save $55 on Any Order by Using This Costco Promo Code at Checkout

  • saves ~$54.88
  • community
How We Verify This Code
1 of 1
code checks worked
$54.88
median discount
4% of the cart
$54.88
saved in total
across every cart we have seen

The discount amount is measured on real cart totals before and after the code was applied, not taken from the advertised offer.

Shoppers here submitted this code or reported back on how it went. It gets the same checks as every other code on this page.

use code
$10
OFF

Save $10 on Your Costco Purchase

Save $10 on Any Order of $35 or More at SameDay.Costco.com by Using This Costco Code at Checkout

  • saves ~73%
  • store issued
Offer Details
73% of the cart
median discount

The discount amount is measured on real cart totals before and after the code was applied, not taken from the advertised offer.

Costco published this code itself, on its own pages, its newsletter or a feed we take from it.

The cart has to reach $35 before this offer applies.

use code
DEAL

100% Off Any Purchase with Coupon Code

Use This Costco Promo Code for 100% Off Any Order

  • saves ~$0.01
  • community
Offer Details
$0.01
median discount
0% of the cart
$784.42
saved in total
across every cart we have seen

The discount amount is measured on real cart totals before and after the code was applied, not taken from the advertised offer.

Shoppers here submitted this code or reported back on how it went. It gets the same checks as every other code on this page.

use code
35%
OFF

Up to 35% Off at Costco

Apply this discount code to save up to 35% on eligible Costco purchases.

  • saves ~$106.00
  • community
How We Verify This Code
1 of 1
code checks worked
$106.00
median discount
33% of the cart
$106.00
saved in total
across every cart we have seen

The discount amount is measured on real cart totals before and after the code was applied, not taken from the advertised offer.

Shoppers here submitted this code or reported back on how it went. It gets the same checks as every other code on this page.

use code
$50
OFF

Score $50 Off at Costco

Use this discount code to score $50 off on eligible Costco purchases.

  • saves ~$50.00
  • community
How We Verify This Code
1 of 1
code checks worked
$50.00
median discount
33% of the cart
$50.00
saved in total
across every cart we have seen

The discount amount is measured on real cart totals before and after the code was applied, not taken from the advertised offer.

Shoppers here submitted this code or reported back on how it went. It gets the same checks as every other code on this page.

use code
30%
OFF

Up to 30% Off at Costco

Enjoy up to 30% off on eligible Costco purchases when you use this discount code.

  • saves ~$51.71
  • community
How We Verify This Code
2 of 2
code checks worked
$51.71
median discount
31% of the cart
$206.84
saved in total
across every cart we have seen

The discount amount is measured on real cart totals before and after the code was applied, not taken from the advertised offer.

Shoppers here submitted this code or reported back on how it went. It gets the same checks as every other code on this page.

use code

Costco Shopping Info

Discounts

✓
Popup/Newsletter
Sign up for email to receive special member-only offers and news.
✓
Loyalty
Executive Membership Rewards Program

Shipping & Returns

✓
Free Shipping
Threshold: $75
✕
Intl Shipping
Online shipping is generally restricted to the domestic US market and specific regional territories.
✓
Free Returns
Window: Lifetime satisfaction guarantee on most items; 90 days for electronics and major appliances · Fee: Free
Final Sale
Cigarettes, alcohol, custom orders, tickets, and gold bars are typically non-returnable.

Payments

Cards
Visa, Mastercard
Wallets
Apple Pay
BNPL
Affirm
✓
Gift Cards

Costco Code Checks, Day by Day

Every Costco code check from the last 14 days, plotted by the day it ran. Green is how many came back working. Red is how many costco.com would not accept. That is the checkout testing you did not have to sit through yourself.

agents@dealhack: ~/signals --store costco.com --days 14
9,057
code checks run
925
checks where the code worked
10.2%
success rate
37
different codes tried
14 days · 9,057 code checks · 925 worked
workedpeak 193
would not applypeak 750
Daily coupon check results
DayCodes that workedCodes that would not applySuccess rate
19047029%
19053726%
19348628%
16356422%
16158722%
106991%
74761%
15920%
45591%
25540%
17050%
15810%
17500%
15720%
where this data came from:
8,640 automated cart runs409 shoppers reporting back

409 of these results came from shoppers telling us whether a code worked; the rest come from automated checks and the other sources above. Last confirmed working on . Codes that stop clearing get pulled off this page automatically.

What These Numbers Mean

A code check is one result for one code. Most are our agents applying it to a real cart and reading the order total before and after; the rest come from tracked orders and from shoppers reporting back, as broken down above. Worked means the code was accepted and the total went down. Would not apply means costco.com refused it on that cart. That is not the same as the code being fake. The usual reasons are:

  • It expired or the store switched it off after it was published.
  • It was single-use and had already been redeemed.
  • It only covers certain categories, brands or individual products.
  • The cart did not reach a minimum spend.
  • It is limited to new customers, a first order, or an email sign-up.
  • It cannot be combined with an active sale or another code.
  • It is tied to a different country, currency or membership.

So a code that failed one check can still work on your cart, and the success rate (checks that worked divided by all checks) is best read as how easily Costco discounts apply in general, not as a verdict on any single code. Hover any bar in the chart to see that day on its own.

When Costco Runs Sales

Recurring events worth timing an order around. Windows shift year to year, so treat them as a shopping calendar rather than a fixed date.

  1. late November to late December
    Holiday Savings Event

    Features deep markdowns across electronics, jewelry, toys, and gift bundles both online and in warehouses.

  2. early January to late January
    New Year Home & Fitness Savings

    Offers special promotional pricing on fitness equipment, organizational goods, dietary supplements, and indoor furniture.

  3. mid-November to early December
    Holiday Season Savvy Savings

    Provides exclusive member-only warehouse and online discounts on major home appliances, laptops, and winter apparel.

Before You Buy at Costco

What shoppers ask most about Costco.

›Can promotional coupon codes be stacked on Costco.com orders?

Costco generally does not support promotional code stacking on online transactions, restricting carts to a single active coupon code per checkout session. Specific warehouse savings items apply automatically without requiring code entry.

›Which product categories or brands are excluded from site-wide promo codes?

Promotional codes never apply to Kirkland Signature fuel cards, digital gift cards, or select major appliances from brands like LG and Samsung. These items are strictly exempt from third-party or promotional discount codes.

›How is membership eligibility checked for online promotional redemption?

Promotion codes and online checkout privileges require active membership verification tied to your account email. Guest checkouts incur a 5 percent non-member surcharge and cannot access member-exclusive promotional discounts.

›How does the Executive Membership annual 2 percent reward program calculate earnings?

Executive members earn an annual 2 percent reward on qualified Costco, Costco.com, and Costco Travel purchases, capped at a maximum of $1,250 per 12-month period. Purchases made prior to upgrading your membership tier are excluded.

How We Verify Costco Codes

Nothing goes up here on trust. A Costco code is collected, applied to a real costco.com cart, dated the last time it took money off an order, scored on what came back, and pulled once it stops clearing. Promotions have no code to run through a checkout, so those are dated when they go live and dropped when they lapse. Here is how far that has got on this page, and every change the agents logged along the way.

agents@dealhack: ~/verify --store costco.com --log
collect15 Costco offers listed here: 14 codes you paste at checkout, 1 promotion that needs none · 1 free shipping offer · 11 sent in by shoppers
test14 codes put through a live costco.com cart · last run
confirmall 14 codes took money off an order in the last 30 days · most recently
score4 codes rated on how likely they are to work · last recalculated
measure12 codes with a discount measured on real carts · $3,634 taken off in total
prune1 offer expires within the month · expired offers and dead codes drop off automatically

Recent Costco offer activity

Each entry is a change the agents logged on this page, dated to the day it happened.

  1. 4 codes rescored on fresh results

    3,544 signals read · odds of working recalculated

  2. 2 codes worked on live costco.com carts

    each one took a discount off a real order

  3. 5 codes retested at checkout

    applied to a live costco.com cart

  4. 5% off code worked on a live costco.com cart

    7/100 code confidence · 1 check worked · 1,721 signals

  5. 30% off code rescored

    2 of 2 checks worked

  6. Costco listings reviewed

    page refreshed, dead codes pulled

  7. New 30% off code added

    sent in by a shopper · 2 of 2 checks worked

The agents keep retesting every Costco code on this page. No one here vouches for a code they did not watch work. If one slips through expired, take the next on the list. We keep backups.

Help Other Costco Shoppers

Not every Costco code reaches us from the store. 11 codes on this page were first submitted by shoppers. They have also sent back 409 checkout results in the last 14 days, telling us which codes worked on a real cart and which came up empty. Wherever a code comes from, it still has to pass the same cart test before it goes up here.

16 hours
since a code sent in by a shopper last took money off a real costco.com cart
5%
of every check on this page came from a shopper, not an agent

Have a code we missed?

Send it over and the agents will run it through a real costco.com cart. If it works, it lands here with the test behind it.

Did a code work for you?

Open any Costco code above and tell us whether it worked. It takes one tap, no sign-up, and a code that keeps failing gets pulled off the page.

Rate a code

Costco Customer Support

Need help with your shopping? Here's what's available for Costco when an order, return, or promo code needs a human.

Phone

1-800-955-2292

Live chat

Available

Help center

www.costco.com/customer-service.html

Customer support is accessible through phone and live chat via the help center.

About Costco

Who you're buying from.

Brand Profile

Websitecostco.com
Founded1983
HeadquartersIssaquah, USA
ReferenceWikipedia
Follow Costco for sale alerts and new arrivals

Did You Know

Naming

Costco's private-label brand, Kirkland Signature, is named after the city of Kirkland, Washington, where the company maintained its corporate headquarters until 1996.

Founding

The very first Costco warehouse location opened its doors to business and individual members in Seattle, Washington, on September 15, 1983.

Origin Story

Costco's corporate lineage traces back to Price Club, which was founded by Sol Price in San Diego, California, in July 1976 before merging with Costco in 1993.

Stores Like Costco: Today's Best Coupons

These 12 stores sell products similar to Costco. Below you can see the best coupon or deal available at each one today, so you can compare prices before you buy. All of them have a promo code you can copy at checkout.

Crowd Cow15% off

15% Off First Order $199+ at Crowd Cow

Take 15% off your first Crowd Cow order of $199 or more, plus free shipping, when you use this code.

  • store issued
Get Deal
Blain's Farm & Fleet$20 off

$20 Off $200+ Summer Online Order

Save on qualifying summer merchandise at farmandfleet.com with a $200 minimum purchase.

  • store issued
Get Deal
Illy$25 off

$25 Off Your Illy Purchase

Save an Extra $25 on Any Order over $100 by Using This Illy Coupon at Checkout

  • community
Get Deal
ReadyRefresh10% off

Take 10% Off Your ReadyRefresh Order

Get 10% off your ReadyRefresh order when you use this discount code.

  • saves ~$6.99
  • community
Get Deal
The Tea Spot15% off

Save 15% on Storewide Orders

Take 15% off storewide at The Tea Spot with this coupon code on eligible regular-priced items; exclusions like subscriptions, gift cards, Tea Clubs, and select charity items may apply.

  • community
Get Deal
Tom Thumb$30 off

$30 Off First Pickup or Delivery Order $75+

Get $30 off your first Tom Thumb online pickup or delivery order when you spend $75 or more on qualifying items.

  • saves ~$30.74
  • store issued
Get Deal
Asda50% off

Take 50% Off Storewide at ASDA

Enjoy 50% off storewide at ASDA when you use this code.

  • store issued
Get Deal
Cigars.com$5 off

Take $5 Off Your First Order at Cigars.com

Use this coupon code to get $5 off your first order at Cigars.com, valid for new customers.

  • community
Get Deal
mymuesli15% off

Save Up to 15% Off at MyMuesli

Take up to 15% off eligible MyMuesli purchases with this coupon code.

  • saves ~17%
  • community
Get Deal
Chomps10% off

10% Off First Order at Chomps

New customers can use this code at checkout to get 10% off their first qualifying Chomps order. Discount cannot be stacked with other promos or subscription discounts.

  • saves ~$10.44
  • community
Get Deal
Japanese Taste20% off

20% Off Storewide at Japanese Taste

Unlock 20% off storewide at Japanese Taste with this discount code.

  • community
Get Deal
Magic Spoon$5 off

Save $5 on Magic Spoon Orders

Use this promo code to get $5 off on eligible Magic Spoon purchases.

  • saves ~$8.05
Get Deal

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