How much does a wedding cake cost for 100 guests?

How much does a wedding cake cost for 100 guests? A wedding cake for 100 guests typically costs between $400 and $800, based on the common estimate of $4 to $8 per serving, with elaborate custom designs, fondant detail work, or sugar flowers pushing the total toward $1,000 or more. Simple buttercream designs and fewer tiers cost less, and many couples save by ordering a small display cake plus sheet cakes kept in the kitchen for serving. Delivery and setup fees are often separate, so ask for the all-in price when you get quotes.