100-Person Wedding Cost Calculator (2026)
How much does a 100-person wedding cost? Get a complete cost breakdown by vendor category, state, and service style using 2026 national average pricing.
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Step 1 · Your Estimate
$30,175 – $40,825Estimated Total Cost
$235 per guest · plus $12,000 fixed costs
Regional benchmarks, last reviewed September 2026. Actual costs vary by city and venue. How we calculate this
Overrides the default estimate. Tip: add ~$30 to your caterer's plate price for rentals, favors, and stationery.
Step 2 · Your Budget
$35,500 across the categories couples actually spend on, the same ones your account uses. Change any number and the total updates.
Starting from the midpoint of your estimate above. Type your own to take it over.
Set aside for surprises
Alterations, vendor meals, overtime, the marriage license, gratuities where they are not already in the contract. None of it is a category, all of it is real. Taken out of your total, not added to it.
Where Your Money Goes
$35,500
Your budget above, by category. Every bar is shaded twice: the part that holds steady, then the part that moves when your guest list moves.
$12,000 holds steady
The same at 40 guests or 240
$23,500 moves with your guest list
About $235 for every name you add
Who's paying
Add what each side has committed.
Confirmed
$0
Expected
$0
Still to find
$35,500
Targets are the easy half
Save free and the Actual column starts filling in.
and 11 more categories
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Payment dates
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Who is paying
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$35,500
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Planning for 100 guests? See how many will actually show up.
Our RSVP drop-off calculator predicts attendance by wedding type, day, and season
Know your headcount? Plan exactly how much alcohol to buy.
Calculate wine, beer, and spirits for your guest count
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Right now it only lives in this browser tab. Saving it free moves every category target into your account, where it keeps up with your guest list and your partner can see it too.
Save my budget freePlanning a 100 Person Wedding
A 100 person wedding is the US national median guest count and represents the most common planning scenario. Fixed costs typically run $12,000 while variable costs add $23,500 at $235 per guest. The total estimate of $35,500 places this squarely at the national average. Most venue packages are designed around the 100 guest benchmark, giving couples the widest selection of options. Managing RSVP responses, addresses, and dietary data across roughly 45 to 55 households is a significant logistical task.
A 100 guest wedding means 45 to 55 households worth of data to track. iDoTogether collects addresses and RSVP responses automatically so you don't need a spreadsheet. Free for up to 50 guests.
Frequently Asked Questions
A standard Saturday summer wedding for 100 guests averages around $35,500 nationally, ranging from $30,175 to $40,825 depending on region, vibe, and timing. This represents the US national average across all states.
The national average for a 100 guest wedding is approximately $35,500. Coastal and major metro markets run significantly higher, while Midwest and Southern markets come in well below this average.
Fixed costs (venue, photography, DJ, planner, florist) account for $12,000. Variable costs (catering, rentals, stationery) add $23,500 at $235 per guest. These two categories make up roughly 90 percent of total wedding spending.
The most impactful savings levers are: choosing a Friday or Sunday date (saves 8 to 10 percent), booking a fall or winter date (saves 5 to 12 percent), and choosing a standard vibe instead of luxury (saves 33 to 40 percent off the luxury estimate). Combining all three can bring a 100 guest wedding total near $30,175.
Most couples need 12 to 18 months to plan a 100 guest wedding at a popular venue. Key suppliers to book first are the venue, photographer, and caterer. Invitations should be sent 8 to 10 weeks before the date. RSVP tracking for 45 to 55 households is one of the most time-consuming administrative tasks.
These figures are regional benchmarks, not quotes. See where the numbers come from
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