Costume Party Budget Calculator
Reviewed by Hamza Gujjar, Algorithm Architect & Software Developer
Last updated: July 27, 2026Costume Party Budget Calculator
Planning a costume party budget gets much clearer when you break it into decorations, per-guest food cost, and a prize pool for a best-costume contest - this calculator combines all three into a single total and per-guest figure.
Formula
- Total Food Cost = Guests x Food Budget Per Guest
- Total Budget = Decorations + Total Food Cost + Prizes
- Cost Per Guest = Total Budget / Guests
Example
25 guests, $100 decorations, $8 food per guest, $50 prize pool:
Total Food Cost = $200 → Total Budget = $350 ($14.00 per guest)
Fixed vs. Variable Costs
Per-guest food cost scales directly with your final headcount, while decorations and prize money are typically fixed costs regardless of exactly how many guests actually show up - separating these two cost types makes it much easier to adjust your budget quickly if your final RSVP count changes closer to the event date.