Cost Calculator
Family Reunion Cost Per Person: 10, 25, 50, and 100 Guests
Per-person cost is the most useful planning number because it scales with your headcount and tells you whether your budget is realistic. Here's what it actually runs at every common group size in 2026, and the four levers that move it.
Per-person cost by group size
Three columns: low (potluck-driven, free venue), typical (mid-range with partial catering), and high (full catering, real venue, t-shirts, photographer).
10 people
Fixed costs (pavilion, supplies, ice) don't share well over 10 people. Small groups tend to do this in a backyard or family member's home and skip the venue cost entirely.
25 people
Sweet spot for cost-efficiency on a potluck model. Fixed costs spread across enough people to feel cheap per-head.
50 people
Where partial catering becomes practical. The catered protein is split across more people and feels less expensive per head.
100 people
Volume catering discounts kick in. The venue must be a real space (pavilion, hall, lodge) so venue cost rises - but it spreads further.
150+ people
Volume helps food, but mandatory infrastructure (AV, name tags, programs, security at some venues) adds fixed costs back. Per-head plateaus around 100.
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The four levers that move per-head cost
Every reunion has the same handful of cost drivers. Pull these levers and your per-head number moves predictably.
Venue type
30-40% of total budget
A free family backyard vs. a $2,500 banquet hall is the biggest single lever. State parks split the difference for most reunions.
Food strategy
25-35% of total budget
Pure potluck = $5-$10 per person. Hybrid = $12-$20. Full catered buffet = $22-$35. Plated dinner = $40-$80+.
T-shirts and merchandise
5-10% of total budget
$12-$18 per shirt is fixed regardless of group size. Optional pre-pay for shirts keeps this off the core budget.
Photography and printing
5-15% of total budget
Professional photographer is per-event, not per-head, so the per-head cost drops sharply as the group grows.
Fixed costs vs. variable costs
Understanding which costs scale with headcount and which stay flat is the whole game.
Fixed costs (don't scale)
- Venue rental
- Photographer
- Decorations and signage
- Permits and insurance
- Activity supplies (one set)
- Banner and printed program design
Variable costs (per person)
- Food and catering
- Drinks and beverages
- T-shirts
- Name tags
- Printed programs
- Paper goods and plates
The bigger your guest count, the more fixed costs spread across people. That's why a 100-person reunion often has a lower per-head cost than a 25-person one - even though the total budget is much higher.
How to set your per-person contribution
- Build the full budget first. Every line item. Don't guess - itemize.
- Divide by paying adults, not total guests. Children are subsidized.
- Add 15% as buffer. No-shows, late additions, surprises.
- Round to a clean number. $47.31 sounds awkward; $50 sounds intentional.
- Communicate the math. Show people what their contribution covers. They pay faster when they see the breakdown.
Use the free Reunly budget calculator to run the math automatically, or grab the spreadsheet template.
Reunly tracks your per-person cost automatically
As RSVPs come in, the per-head cost recalculates. Mark guests as paid, see what's left to collect.
💰 With Reunly
Know your per-person cost before you ask anyone to commit
Reunly's budget tracker splits every expense across your guest list so you always know the real per-head number.
Frequently asked questions
What is the average cost per person for a family reunion?
Across all reunion sizes and styles, the most common per-person cost lands between $40 and $90. A small potluck at a free venue can drop to $20-$30. A catered banquet-style reunion can rise to $150+. The midpoint - around $60 per adult - is where most family reunions fall.
Why does per-person cost change with group size?
Fixed costs - venue rental, photographer, decorations, supplies - don't scale with headcount. They're roughly the same whether you have 25 or 50 people. Adding more guests spreads those fixed costs across more people, lowering the per-head cost. This effect plateaus around 100 guests, where new infrastructure costs (AV, programs, name tags) start to add fixed cost back.
Should I charge children the same as adults?
Almost never. Most reunions either charge children half-price (under 12) or subsidize them entirely. The food cost for a child is typically half an adult portion. Calculate the budget on adult headcount, then offer reduced or zero contributions for kids.
What's the cheapest possible per-person cost?
Around $15-$20 per person if you do a strict family-backyard potluck with borrowed supplies. Below that you're asking family to bring more than they should. The minimum to feel like a real event is about $25 per person.
How do I calculate my own per-person cost?
Build the full budget first - every line item. Then divide by paying adults (not total guests). Add 15% as buffer for no-shows and overruns. The result is your real per-adult contribution. Use the free Reunly budget calculator to do the math automatically.