Updated October 16, 2026
Quick answer
Costco cakes cost $5.99 to $27.99 in 2026. A custom half-sheet cake is $27.99 (serves about 48), a 10-inch round is $16.99–$17.99 (serves about 16), and most ready-made cakes are $16.99–$21.99, like the Tuxedo Mousse Cake ($18.99) and 12-inch cheesecake ($19.99). A dozen cupcakes is $8.99.
$27.99
Half sheet
$16.99
10″ round
$18.99
Most bar cakes
$8.99
12 cupcakes
Costco Custom Cake Prices
These are ordered ahead at the bakery kiosk or in the Costco app. The price is the same for every design and both flavors (white or chocolate).
| Cake | Price | Serves | Cost per slice | Item # |
|---|---|---|---|---|
| Half-sheet cake | $27.99 | ~48 | ~$0.58 | 39591 / 39595 |
| 10-inch round cake | $16.99–$17.99 | ~16 | ~$1.06–$1.12 | 1685431 / 1576804 |
| Full-sheet cake | Not sold | – | – | – |
Everyday Bakery Cakes (No Order Needed)
| Cake | Price | Size / Serves | Availability |
|---|---|---|---|
| Tuxedo Chocolate Mousse Cake (#40706) | $18.99 | 42 oz · ~12 | Most stores |
| Kirkland Signature 12″ Cheesecake (#37839) | $19.99 | 12-inch · 16 slices | Most stores |
| Caramel Tres Leches Bar Cake (#1366484) | $17.99 | 44 oz · ~16 | Most stores |
| White or chocolate cupcakes, 12-count (#1951049 / #1951053) | $8.99 | 12 large | Most stores |
Fall Seasonal Cakes & Pies (In Stores Now)
| Item | Price | Size / Serves | Season |
|---|---|---|---|
| Kirkland Signature Pumpkin Pie (#60809) | $5.99 | 58 oz · 12 slices | Fall |
| Pumpkin Cheesecake with Whipped Topping (#1951029) | $21.99 | 4+ lb | Fall |
| Pumpkin Bar Cake (#2067640) | $16.99 | 2.5 lb · ~20 | Fall |
Rotating Bar Cakes (Check Your Store)
Costco rotates bar cakes through the year. They’re usually $18.99, but only some warehouses have them at any time.
| Bar cake | Price | Size / Serves | Stock (Oct 2026) |
|---|---|---|---|
| Chocolate Chip Cookie Bar Cake (#2015360) | $18.99 | Bar · ~12 | ~1 in 4 stores |
| Carrot Bar Cake (#1390041) | $18.99 | 3 layers · ~12 | ~1 in 5 stores |
| Strawberries & Cream Bar Cake (#1732188) | $18.99 | 2 lb 14 oz · 8–12 | Spring/summer, mostly gone |
| Mocha Crunch Bar Cake (#1972451) | $18.99 | 41 oz · 12–16 | Mostly gone |
Costco Cake Sizes and Servings
| Cake | Approx. size | Servings | Best for |
|---|---|---|---|
| Half sheet | About 12 x 16 in, ~9.5 lb | ~48 (2×2 in slices) | Big parties, office, school |
| 10-inch round | 10 in, two layers | ~16 | Family birthdays |
| Bar cakes | Long rectangle, 2.5–3 lb | 12–20 | Dinners, small groups |
| 12-inch cheesecake | 12 in round | 16 pre-cut slices | Holidays, dessert tables |
| Cupcakes | 12 large | 12 | Kids’ parties |
Feeding 50+ people? Costco doesn’t make a full sheet, so order two half sheets ($55.98 for about 96 slices).
How Costco Cake Prices Have Changed
- A few years ago: half sheet $19.99
- Early 2025: $24.99
- 2026: $27.99, unchanged over the last 60 days
Even at $27.99, a Costco half sheet is still well below most grocery and custom bakeries for the same number of servings.
Why Your Store’s Price Might Be Different
- Prices vary slightly by region (the 10-inch round is $16.99 at some warehouses, $17.99 at others).
- Seasonal and bar cakes come and go, so not every store has every cake.
- Costco Business Centers may not have a custom cake bakery at all.
- Costco Same-Day delivery (Instacart) prices are higher than in-warehouse prices.
Costco Cake Price FAQ
How much is a Costco sheet cake in 2026?
$27.99 for a half sheet that serves about 48. Costco doesn’t sell full sheets.
How much is a 10-inch round cake at Costco?
$16.99–$17.99 depending on the warehouse. It serves about 16.
What is the cheapest cake at Costco?
Year-round, the cheapest cake is the 10-inch round at $16.99, and a dozen cupcakes is $8.99. In fall, the cheapest bakery dessert is the $5.99 Kirkland Signature Pumpkin Pie.
Does a custom design cost extra at Costco?
No. Every design, message and icing color is included in the $27.99 half-sheet or $16.99–$17.99 round price.
How much does a Costco cake cost per person?
About $0.58 per slice for a half sheet and about $1.06–$1.12 for a 10-inch round.
Is the Costco cake price higher online?
Ready-made cakes bought through Costco Same-Day delivery usually cost more than in the warehouse. Custom cakes are paid for at the register when you pick them up.
Related: Costco sheet cake · Birthday cakes · Cake flavors · Cake designs · Halloween cakes
Costco-Cakes.com is an independent guide, not affiliated with or endorsed by Costco Wholesale Corporation. Prices change often, so confirm at your local warehouse.
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