What is a typical cost per guest for a party?

It depends what you include. Catering-only per head in the UK (2026) runs roughly £10 for finger food, £15-£20 for a cold buffet, £20-£30 for a hot buffet and £30-£100+ for a formal sit-down meal. Add drinks and you are typically at £40-£160 per guest for food and drink at a wedding. All-in per guest — once venue hire, photography, flowers and entertainment are spread across the guest list — can reach £150-£250+. A casual house party runs £10-£20 a head, a catered birthday £25-£50, and corporate events £50-£100. (Sources: Bark.com 2026 catering price guide; Bridebook 2026.)

What are fixed vs variable party costs?

Fixed costs stay the same regardless of guest numbers - venue hire, DJ, photographer, cake. Variable costs change with guest count - food per head, drink per head, favours, place settings. Understanding the split helps you see the real cost impact of adding guests.

How does adding more guests affect cost per head?

More guests spread fixed costs over more people, reducing cost per head. But variable costs add up for each additional guest. There is typically a sweet spot where cost per head is minimised - this calculator helps you find it.

Should I use total cost or itemised costs?

If you already know your total spend, enter it directly. If you want to understand how fixed and variable costs interact, use the itemised fields. The calculator works either way.

PartyCalcs

Per Guest Cost Calculator — Cost Per Head

Work out exactly how much each guest costs at your party or event.

Number of Guests

Total number of people on the guest list

Total Cost (if known)

Your whole event budget — overrides the itemised fields below if entered

Fixed Costs (venue, DJ, etc.)

Costs that don't change with headcount: venue hire, DJ, photographer, cake

Variable Cost per Head

Per-person spend: food, drinks, favours, place settings

How We Calculate This

This calculator divides your total event costs by the number of guests to give a per-head figure.

Formula

Base total = fixed costs + (variable cost per head × guests). If you enter a known Total Cost, that figure is used directly and the itemised fields are ignored.
Grand total = base total + VAT/tax (VAT defaults to 0%, so the grand total equals the base total unless you add a rate).
Cost per guest = grand total ÷ effective guests.
Fixed cost per guest = fixed costs ÷ effective guests.

Effective guests = guests × (1 − no-show rate). The no-show rate defaults to 0%, so by default effective guests = the number you enter and cost per guest = grand total ÷ guests — the standard per-head figure. Raise the no-show rate (under Advanced Options) to spread the same total spend across the smaller group you actually expect to attend.

You can either enter a known total cost directly, or break it down into fixed and variable components for more insight.

Frequently Asked Questions

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Last updated: February 2026

All calculations are estimates. Adjust quantities based on your guests and event type.