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How much should a kids birthday party cost?

Most family parties land somewhere between $150 and $500. A backyard party with homemade cake can come in well under $150; a booked venue with an entertainer climbs past $500 quickly. The number that matters isn't the total — it's deciding the total first, then splitting it deliberately instead of paying for each thing as it appears.

Want the full picture? Read how much a kids birthday party actually costs — with real per-child figures and the four decisions that move the number most.

Where the money actually goes

• Venue or entertainment — ~30%. The single biggest lever. A home party frees this up entirely.
• Food & drinks — ~20%. Scales directly with headcount.
• Cake & treats — ~12%. A store cake plus a few homemade extras stretches furthest.
• Decorations — ~12%. Highly flexible; pick one theme colour and repeat it.
• Party favors — ~10%. Small and thoughtful beats big and plastic.
• Activities, invitations & buffer — ~16%. Always leave a little slack.

How far in advance should I plan?

Four to six weeks is comfortable. Book any venue or entertainer first — they fill up fastest — send invitations about three weeks out, and confirm your final headcount the week of the party so you're not over-catering.

Is Sparkler really free?

Yes. No sign-up, no ads, and nothing you type is uploaded — your plan is saved only in your own browser. The share link packs your plan into the URL itself, so you choose exactly who sees it.