"Costco Party Math: Feeding 25 People for Under $200"

Costco is the best party caterer in America, but only if you walk in with math already done. Walk in without a plan and the warehouse will happily sell you $340 of party food for 25 people, roughly $150 of which will still be in your freezer in November. (The $19.99 shrimp platter is the gateway. It's never just the shrimp platter.)

Here's the math I actually use, in the form of three complete 25-person menus, each priced under $200 at August 2026 warehouse prices. Prices below are what I've paid recently in Texas; Costco's pricing is unusually consistent nationally, but expect a few dollars of drift by region.

The two anchor prices that make Costco parties work

Every cheap Costco party is built on two items whose prices are practically civic institutions:

• The $4.99 rotisserie chicken. About three pounds of cooked meat per bird, and famously held at $4.99 for decades as a loss leader — Costco has raised it exactly once in its history, and not recently. Yield per dollar, no protein in the store touches it.
• The $9.95 18-inch food-court pizza. Twelve real slices. Feeding people for under 85 cents a slice in 2026 is absurd, and you don't need a membership card to want it — though you do need one to buy it.

Add the bakery's half-sheet cake — $27.99, serves 48, which comes out to 58 cents a slice — and you have dessert for any party under 50 people with one line item.

Menu 1: Pizza night — $96 for 25 people

The bar-lowering champion. Best for game watches, kids' birthdays, moving-day thank-yous.

Okay, $98.24 — two dollars over my own headline if you're keeping score, and I'd rather admit that than quietly delete the carrots. Drop the veggie tray and you're at $89.74; keep it, because a pizza party with one green thing on the table reads as dinner instead of a concession.

The logistical catch: food-court pizzas are made to order, so call ahead or order at the counter 30–40 minutes before you want them, and plan for them to arrive home warm, not hot. A 200°F oven and the original boxes cracked open holds them fine for an hour.

Menu 2: Rotisserie chicken taco bar — $158 for 25 people

My favorite of the three. Interactive, feels like a real spread, and shreds (sorry) the per-person cost of any catered taco bar by 80%.

Menu 3: The deli board — $174 for 25 people

For showers, graduations, and any daytime event where a sandwich spread reads more appropriate than pizza. This one leans on Costco's deli and bakery.

The trap aisle: what not to buy for a party

Costco's margins on your restraint are where the $340 cart comes from. From my own receipts over the years, the recurring offenders:

• Frozen appetizer boxes ($13–17 each). Three boxes feels like nothing in the cart, adds $45, and replaces food you already bought. Appetizers before a real meal should be 3–5 bites per person, total.
• The giant croissants when you already bought buns. Beautiful. Redundant.
• Specialty beverages by the case. A case of anything artisanal is $18–25, and half the case survives the party. Costco is actually the right place to buy wine for a crowd — the Kirkland Signature prosecco at around $7.99 embarrasses bottles at twice the price — but drinks deserve their own math, which I've done in the signature cocktail vs. open bar breakdown.
• Paper goods in bulk you don't need. 500 plates for a 25-person party is not savings, it's storage. Dollar Tree wins small-quantity paper goods; I priced this exact question in the Dollar Tree vs. Party City vs. Amazon face-off.

The one-hour shopping plan

Does the membership pay for itself on one party?

Fair question if you're not already a member: the Gold Star membership runs $65 a year, so does a single 25-person party justify it? Run it against the pizza-night menu. Five comparable large pizzas from a national delivery chain cost $70–90 carryout, versus $49.75 at the food court; a grocery-store half-sheet cake typically runs $40–55 against Costco's $27.99. On those two lines alone you recover $35–65 of the fee in one afternoon. Throw one more event that year — or start buying your regular groceries there — and the membership is comfortably paid for. If you'd genuinely use it exactly once, borrow a member instead: memberships admit two guests per cardholder, and the member pays at the register, so bring cash and a friend with a card. (Costco Shop Cards can also be used by non-members, if a member buys you one first.)

The bottom line math

For calibration: catering a 25-person taco bar from a mid-range restaurant in most US metros starts around $12–16 a head before delivery and tip. The warehouse version costs $6.32, takes one hour of shopping and one podcast of chicken-shredding, and — this is the part I care about — nobody at the party can tell where the ceiling on the budget was. That's the whole game: the spread looks chosen, not capped.