Costco Cakes 2026: Sheet Cake Price and How to Order

Quick answer: A custom Costco half-sheet cake costs about $27.99 (prices vary by warehouse) and serves about 48 people. You can order it in the Costco app at least three days ahead, or on the paper form at the bakery, which most warehouses turn around in 24 to 48 hours. There are two flavors: white cake with vanilla cheesecake mousse or chocolate cake with chocolate mousse. If you don't need a custom design, the bakery case has ready-made cakes from about $17.99.

Key takeaways

• Half-sheet cake: about 13 x 18 inches, about 9.5 lb, serves about 48. Around $27.99 in late 2025, up from $19.99 before 2020.
• Order in the Costco app (US, 3 days to 2 weeks ahead) or on the paper form in the warehouse. Costco does not take cake orders by phone or on costco.com.
• Two flavors, which can't be mixed; pick a preset design, an icing color and a message.
• Ready-made 10-inch rounds, bar cakes and cheesecakes need no order.
• Costco's satisfaction guarantee covers bakery items, but custom orders may be limited to a remake if the cake isn't made as ordered.

How much is a Costco sheet cake?

Costco doesn't publish bakery prices, so these come from recent reports and receipts. The custom half-sheet cake was about $27.99 in late 2025:

Prices vary by warehouse, so check yours. If you see a higher number online (such as $31.77), it's usually a delivery-app listing, which marks prices up over the warehouse price.

At about 48 servings, that's under 60 cents a slice, which is why the Costco sheet cake has such a following for birthdays, graduations and office parties.

How to order a Costco cake

In the Costco app (US)

1. Sign in with a verified membership and open the Warehouse tab, then Warehouse Ordering.
2. Pick your warehouse, the cake, a design, icing color and message.
3. Order at least three days and up to two weeks before pickup. You can order up to five identical cakes per order; for more, contact the warehouse.
4. You'll get a confirmation email with pickup details and an estimated total.
5. To change or cancel, call the warehouse you're picking up from.

App ordering began showing up for some members in 2025, and Costco's CEO announced it on the December 2025 earnings call. Cake orders aren't available on costco.com.

On the paper form (still accepted)

Despite headlines in early 2026 about Costco "retiring" its paper cake forms, Costco's own FAQ (July 2026) says: "We will continue to accept paper orders in the store." Fill in the form at the bakery station, drop it in the box, and pick up at the time you chose. Most warehouses need 24 to 48 hours, but it varies, so ask at your bakery for anything urgent.

Phone and Canada

Costco doesn't take cake orders by phone. In Canada, app ordering is "not available in Canadian warehouses at this time," so Canadian members use the in-store paper form.

Costco cake flavors, sizes and designs

Sizes

• Half-sheet: about 13 x 18 inches, about 9.5 lb, serves about 48 (2 x 2 inch slices).
• 10-inch round: serves about 16. Available ready-made in the bakery case.

Flavors (one per cake; you can't mix them)

• White cake with vanilla cheesecake mousse filling and white buttercream.
• Chocolate cake with chocolate mousse filling and chocolate buttercream.

Designs: choose from the warehouse's preset designs: balloons, roses, rainbow, baby shower, graduation, flag and seasonal themes. Add a message and pick an icing color. The design doesn't change the price.

Photo cakes: Costco's US bakery doesn't currently offer printed photo cakes, so plan on a preset design.

Costco cakes you don't have to order

The bakery case carries ready-made cakes that rotate by season. Recent warehouse prices (these vary by location):

New in late summer 2026: the Cherry Almond Coffee Cake, first reported in August. Seasonal cakes like the carrot and tiramisu sell out, so buy them when you see them.

Can you return a Costco cake?

Costco's guarantee covers most of what it sells: "We guarantee your satisfaction on every product we sell, and will refund your purchase price," with listed exceptions. A ready-made bakery cake you're unhappy with falls under that guarantee; take it, or what's left of it, to the Returns counter.

Custom cakes are different. Costco's policy excludes "custom product(s) manufactured to our member's personal and unique specifications," except where the product fails to meet those specifications. In practice, if your custom cake isn't made the way you ordered it, talk to the bakery or the Returns counter; expect a remake or a fix rather than a no-questions refund.

Tips for ordering a Costco cake

• Order early for graduation season and holidays. The app takes orders up to two weeks out.
• Check the message before you submit. Keep it short so it fits the design.
• Bring a flat surface. A half-sheet weighs about 9.5 lb; a car seat isn't level.
• Need more than five? Call the warehouse instead of placing several app orders.

FAQ

How far in advance do I need to order a Costco cake?

At least three days in the Costco app (and up to two weeks). With the paper form in the warehouse, most bakeries need 24 to 48 hours.

Can I order a Costco cake online?

In the US, yes, in the Costco app only, not on costco.com. In Canada, use the paper form in the warehouse.

How many people does a Costco sheet cake feed?

About 48, cut into 2-inch squares.

Does Costco still make sheet cakes?

Yes. Costco pulled half-sheet cakes briefly in 2020 and brought them back the same year; its 2026 ordering FAQ covers custom cakes in the app and on paper forms.

Related: How the Costco price adjustment works · Costco return policy, item by item · Costco food return policy

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Bakery prices change too. CostRefund watches your Costco receipts and tells you when something you bought gets cheaper, so you can claim the difference at the Returns counter. Start free.

Sources: Costco: custom cake ordering in the Costco app (July 2026) · Costco return policy · The Krazy Coupon Lady: Costco bakery (Feb 2026) · TODAY, Feb 2026 · NBC Bay Area, July 2020 · FinanceBuzz, Oct 2026 · The Daily Meal, May 2026. Cover photo by Adrian Greaves on Unsplash.