Updated October 16, 2026
Quick answer
A Costco custom half-sheet cake costs $27.99 in October 2026 and serves about 48 people. A 10-inch round costs $16.99–$17.99 and serves about 16. Both come in two flavors: white cake with vanilla cheesecake mousse, or chocolate cake with chocolate mousse. Order at the bakery kiosk at least 24 hours ahead, or in the Costco app (where available) at least 3 days ahead. A membership is required.
$27.99
Half sheet
~48
Servings
2
Flavors
24 hrs+
Notice
Costco Cake Prices (October 2026)
Costco sells two kinds of cakes. Custom cakes are special-ordered and decorated for you. Ready-made cakes sit in the bakery case and need no order. The custom price stays the same whatever design you pick.
Most popular
Half-Sheet Cake
$27.99
10-Inch Round
$16.99
Full-Sheet Cake
Not sold
| Cake | Price | Size / Serves | Type |
|---|---|---|---|
| Half-sheet cake (#39591 white, #39595 chocolate) | $27.99 | ~9.5 lb · ~48 | Custom order |
| 10-inch round cake | $16.99–$17.99 | ~16 | Custom order |
| Tuxedo Chocolate Mousse Cake (#40706) | $18.99 | 42 oz · ~12 | Ready-made |
| Kirkland Signature 12″ Cheesecake (#37839) | $19.99 | 12-inch · 16 slices | Ready-made |
| Pumpkin Cheesecake | $21.99 | 12-inch | Fall |
| Pumpkin Bar Cake | $16.99 | 2.5 lb · ~20 | Fall |
| Kirkland Signature Pumpkin Pie (#60809) | $5.99 | 58 oz · 12 slices | Fall |
Price history: the half sheet was $19.99 a few years ago, $24.99 in early 2025 and $27.99 since. That still works out to about $0.58 per slice, far below most grocery-store bakeries.
Which Costco Cake Should You Buy?
| Your situation | Best pick | Why |
|---|---|---|
| 20–48 guests, birthday or office party | Half-sheet custom cake | Lowest cost per slice, custom message and design |
| 10–16 guests | 10-inch round | Enough cake without leftovers |
| Need cake today | Tuxedo Mousse Cake or 12″ cheesecake | In the bakery case, no order needed |
| 50–96 guests | Two half sheets | Costco does not make a full sheet |
| Thanksgiving or fall dinner | Pumpkin pie or pumpkin cheesecake | Seasonal, cheap, feeds a table |
| Want a fancy or themed look | Plain half sheet, decorate at home | Costco has no photo cakes or characters |
Costco Custom Cake Flavors
Custom sheet and round cakes come in two flavors only. You can’t mix them, such as chocolate cake with vanilla filling.
White Cake
Vanilla sponge layers, vanilla cheesecake mousse filling, white buttercream icing. The most-ordered option.
Chocolate Cake
Chocolate cake layers, chocolate mousse filling, chocolate buttercream icing. Richer and darker.
Looking for carrot, red velvet or tiramisu? Those are separate ready-made cakes. See all Costco cake flavors.
How to Order a Costco Cake
Costco is moving custom cake orders from paper forms to the Costco app (not Costco.com). The rollout is warehouse by warehouse, and Costco expects all U.S. locations to be on it by the end of 2026. Until your store switches, the paper form at the bakery kiosk still works.
Option 1: Costco app (participating warehouses)
- Update the Costco app, then open the Warehouse tab.
- Tap Order Grocery/Bakery (it may show as custom cake ordering).
- Pick your warehouse and a pickup date and time (at least 3 days out, up to 2 weeks).
- Choose size, flavor, design and icing colors, then type your message.
- Confirm. You get an email confirmation and pay at the register when you pick up.
Option 2: Bakery kiosk (every warehouse)
- Take a cake order form from the kiosk near the bakery.
- Mark size, flavor, design number and icing colors.
- Print your message clearly, exactly as it should appear.
- Add name, phone, membership number and pickup time.
- Drop it in the slot or hand it to the bakery team.
How far ahead? At the kiosk, at least 24 hours (many warehouses prefer 48). In the app, at least 3 days. Give 3–7 days around graduations and holidays. Costco doesn’t take cake orders by phone. Step-by-step help: how to order a cake from Costco.
What You Can and Can’t Customize
You can choose
- Size: half sheet or 10-inch round
- Flavor: white or chocolate
- A design from about 30 options
- Icing colors on most designs
- A short written message
You can’t get
- Photo or edible-image cakes
- Licensed characters or logos
- Fondant or tiered cakes
- Mixed flavors or fillings
- Designs not in the book
Want something fancier? Order a plain half sheet and add toppers, fruit or sprinkles at home. Browse the Costco cake catalog or read the full custom cake guide.
Costco Bakery: In Season Now (Fall 2026)
- Kirkland Signature Pumpkin Pie: $5.99 for a 58 oz pie, back through Thanksgiving
- Pumpkin Cheesecake: $21.99
- Pumpkin Bar Cake: $16.99, about 20 slices
- Halloween cake designs on custom half sheets through October 31
- Thanksgiving desserts: apple and pecan pies join the lineup in November
Costco Cake Guides
- Birthday CakesDesigns, prices, tips
- Sheet CakeSize, flavors, $27.99
- Custom CakesWhat you can change
- Graduation CakesOrder early in May
- Baby Shower CakesColors and messages
- Wedding CakesBudget DIY options
- CheesecakeFlavors and size
- Tuxedo CakeChocolate mousse favorite
- CupcakesPacks and flavors
- Bakery MenuPies, cookies, bread
- Holiday HoursClosed days 2026–27
- Costco UK£18.99 cakes, order online
How to Store a Costco Cake
- Refrigerate it. The mousse filling is perishable, so don’t leave it out for more than a couple of hours.
- Fridge: 3–4 days, covered.
- Freezer: up to 3 months, wrapped in plastic wrap and foil. Thaw overnight in the fridge.
- Serve: take it out about an hour before cutting for the best texture.
More detail: Do Costco cakes need to be refrigerated?
Costco Cake FAQ
How much is a Costco cake in 2026?
A custom half-sheet cake is $27.99 and serves about 48. A 10-inch round is $16.99–$17.99 and serves about 16. Ready-made cakes like the Tuxedo Mousse Cake ($18.99) and 12-inch cheesecake ($19.99) need no order.
Can I order a Costco cake online?
Yes, at participating warehouses, in the Costco app (not Costco.com), at least 3 days and up to 2 weeks ahead. Costco plans to have every U.S. warehouse on app ordering by the end of 2026. Everywhere else, use the paper form at the bakery kiosk.
How far in advance do I need to order?
At the kiosk, at least 24 hours (many warehouses ask for 48). In the app, at least 3 days. Allow 3–7 days around holidays and graduation season.
Do I need a membership to buy a Costco cake?
Yes. A Gold Star membership costs $65 a year and Executive costs $130. A non-member can pay with a Costco Shop Card, or ask a member to order for them.
Does Costco make full sheet cakes?
No. The half sheet is the largest size. For more than 48 people, order two.
Can I put a photo on a Costco cake?
No. Costco doesn’t print edible images or licensed characters. You choose a design, icing colors and a message.
Can I get a Costco cake the same day?
Not a custom order. Most bakeries keep a few pre-decorated half sheets and rounds in the case at the same price, plus ready-made cakes like the Tuxedo Mousse Cake.
Can I call Costco to order a cake?
No. Costco doesn’t take bakery cake orders by phone. Use the app or the in-store kiosk.
How we keep this page accurate: We recheck prices every month against warehouse price trackers, Costco’s own announcements and recent news coverage, and note the date at the top. Costco prices and designs vary by warehouse and can change without notice, so confirm with your local bakery before you order.
Costco-Cakes.com is an independent guide. It is not affiliated with, endorsed by or connected to Costco Wholesale Corporation. All trademarks belong to their owners.