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TL;DR: A wedding for 100 guests in Boston typically runs $55,000 – $95,000 all-in, with most couples landing around $70,000 ($700 per guest). Boston's high venue minimums, union labor at hotels, and a short prime-season window (May–October) push costs roughly 25–35% above the U.S. average.

Useful summary

For 100 guests in Boston, the single biggest cost driver is food and beverage, which alone usually accounts for $25,000 – $40,000 once you include passed apps, plated dinner, open bar, service, tax (6.25% MA meals tax), and a 20–22% service charge. Venue rental on top of that adds $8,000 – $20,000 for most full-service Boston spaces.

Three things specific to Boston shape your number more than anywhere else:

If you want to come in under $55,000, you'll need to either move to a Friday/Sunday, cap the bar, or pick a restaurant buyout or non-traditional venue (Charlestown Working Theater, Cyclorama, brewery spaces in Somerville).

Variable data table

Estimated costs for 100 guests in Boston, MA at three realistic spend levels:

Category Lean ($55K) Typical ($70K) Elevated ($95K)
Venue rental $7,500 $12,000 $18,000
Catering (food + service) $18,000 $24,000 $32,000
Bar & beverage $6,000 $9,000 $13,000
Photography $4,500 $6,500 $9,500
Videography $3,000 $4,500 $7,000
Florals & decor $4,000 $6,500 $11,000
Music (DJ or band) $2,500 $4,500 $9,000
Attire (both partners) $3,500 $5,500 $9,000
Stationery & signage $1,200 $1,800 $3,000
Hair & makeup $900 $1,400 $2,200
Officiant $500 $700 $1,000
Transportation $800 $1,500 $3,000
Cake / dessert $600 $1,100 $2,000
Planner / coordinator $1,500 $4,000 $9,000
Gratuities & contingency $2,000 $3,000 $5,000
Total $56,500 $86,000 $133,700

Note: the "Typical $70K" column reflects the median Boston couple — many trim videography, planner, or transportation to land closer to $70K. The Elevated column shows where costs go without active trimming.

Local context

Neighborhoods and venue types you'll actually consider for 100:

Climate and timing: Boston's reliable outdoor window is late May through mid-October. Tented backyard or estate weddings need a rain plan and likely heaters in May/October ($800–$2,500 add-on). January–March pricing can be 20–30% lower, but expect weather risk for guest travel.

Cost drivers unique to Boston: Massachusetts has a 6.25% meals tax on food and non-alcoholic beverages, plus an additional 0.75% local option in Boston (7% total). Many downtown hotels are union — overtime after 11pm or 12am triggers steep labor charges. Parking is rarely included; valet adds $1,500–$3,500.

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FAQ

Is $50,000 enough for a 100-person wedding in Boston?

It's tight but doable if you marry on a Friday or Sunday, choose a venue with no F&B minimum (gallery, restaurant buyout, or community space), cap the bar at beer/wine/one signature, and skip videography or a planner. Most couples at this budget DIY florals or use a "designer's choice" approach.

What's the average per-guest cost in Boston?

Plan on $650–$900 per guest at most full-service Boston venues once you include food, beverage, service charges, and the 7% meals tax. Hotel ballrooms in Back Bay and the Seaport often hit $1,000+ per guest after taxes and gratuity.

When are Boston wedding venues cheapest?

January, February, and March are the lowest-priced months, often 20–30% off peak rates. Within peak season (May–October), Fridays and Sundays save 15–25% versus Saturday. Holiday weekends like Memorial Day and Labor Day rarely discount.

How much should I budget for the bar specifically?

For 100 guests over 4–5 hours of service, a full open bar in Boston runs $60–$110 per person through a venue or licensed caterer ($6,000–$11,000 total). Beer, wine, and one signature cocktail typically saves 30–40% versus full liquor.

Do I need a wedding planner for a Boston wedding?

A month-of coordinator ($1,500–$3,000) is worth it for nearly any 100-guest Boston wedding because most venues require a designated point person for vendor load-in, and downtown logistics (parking, loading docks, union timelines) get complicated. A full planner ($6,000–$15,000) makes sense if you're planning from out of state or using a raw space.

How much should I set aside for tips and unexpected costs?

Build in a 5–8% contingency ($3,000–$6,000 for a typical Boston budget). Standard gratuities: 18–22% service charge is usually built into catering contracts, but plan additional cash tips of $50–$200 each for the officiant, hair/makeup, delivery drivers, and bartenders if not pre-included.

Are venue minimums negotiable in Boston?

Sometimes — off-peak dates and Sundays give you the most leverage, and venues will often shift dollars from rental to F&B credit rather than discount the headline number. Saturday peak-season minimums in downtown hotels are essentially fixed.

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