"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%.

Shred the chickens at home (10 minutes, two forks, put on a podcast), toss the meat with a little of the drippings plus taco seasoning, and hold it in a slow cooker. One warning that matters: cooked chicken lives by the USDA two-hour rule, so keep the backup half in the fridge and refill the slow cooker instead of mounding it all out at 6 p.m. Fresher-looking buffet, safer leftovers — the same split-platter trick from my quantity cheat sheet.

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

Costco trips before a party fail on time, not money, so here's the route: deli and refrigerated first, bakery second (order the cake 2–3 days ahead at the counter or app — day-of sheet cakes are not guaranteed), center aisles only for your listed dry goods, food court pizza order on the way in so it's ready on the way out. Saturday after 11 a.m. is a contact sport; go on a weeknight or at 9:30 a.m. sharp on a weekend and the whole trip, checkout included, fits in an hour.

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.)

Two membership-adjacent notes that affect party math: the food court requires a membership card at most US locations now, so the pizza plan assumes someone in your group has one. And Costco's same-day delivery through Instacart marks items up meaningfully — the in-warehouse prices in this article are not the delivered prices, and at delivered prices two of these three menus lose to a good grocery-store run. The warehouse trip is the price of the warehouse price.

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.