Plus-plus calculator
Wedding service charge vs. gratuity: what “$100++” costs
Calculate a wedding price after service charge and sales tax, learn whether gratuity is included, and find the contract questions that prevent a surprise bill.

Interactive estimate
Plus-plus calculator
This model applies tax after the service charge. Replace every field with the exact rates in the quote and confirm whether that order matches local tax rules.
Base subtotal
$15,000.00
Service charge
$3,600.00
Tax
$1,488.00
Estimated total
$20,088.00
Effective / guest
$133.92
The two plus signs are not two fixed fees
In a catering or venue proposal, “$100++” usually means the stated price is followed by a mandatory service or administrative charge and sales tax. The notation is shorthand, not a complete calculation. The percentages and the order in which they apply must come from the proposal or contract.
A service charge may be retained by the venue rather than distributed as a tip. Ask whether gratuity is included, optional or expected in addition to the service charge. That answer can materially change the final food-and-beverage budget.
A 150-guest example
At $100 per guest, 150 guests create a $15,000 food-and-beverage subtotal. If a 24% service charge applies, it adds $3,600. If 8% sales tax is then assessed on the $18,600 combined amount, tax adds $1,488 and the total becomes $20,088—or $133.92 per guest.
That example is illustrative. Some jurisdictions tax service charges differently, and some proposals apply fees to bar, room rental or labor on separate bases. Use the calculator above with the actual percentages shown in your documents.
Illustrative effective price
$133.92 per guest
$100 base + 24% service charge + 8% tax on the combined amount
Questions that close the remaining gap
Ask the venue to provide a sample banquet-event-order total at your estimated guest count. It should show each percentage, taxable subtotal and mandatory line instead of only repeating the package price.
- What exact subtotal receives the service charge?
- Is the service charge taxable at this location?
- Does the service charge include gratuity for servers and bartenders?
- Are bar labor, cake service, rentals or room fees outside the per-person price?
- Will the guaranteed guest count or food-and-beverage minimum control the final bill?
Service charge and gratuity are not interchangeable words
Treat each label as a contract term, not a promise about who receives the money. A mandatory service or administrative charge can cover business overhead, while a gratuity or tip may be distributed to staff. The document should say whether any mandatory percentage is paid to servers and bartenders and whether an additional tip is expected.
If the proposal only says “service charge,” ask the venue to answer in writing. Do not add a second gratuity automatically, and do not assume the service charge already rewards the staff. The correct budget depends on the venue’s policy and the signed agreement.
Rebuild the calculation before comparing venues
Write down the food subtotal, beverage subtotal, mandatory percentage, taxable amount and any separate gratuity. Apply the same guest count to every venue and keep optional upgrades outside the required total. This turns a headline per-person price into an expected out-of-pocket figure.
- Confirm whether the service charge applies to food, beverage, room rental, labor or all of them.
- Confirm whether tax applies before or after the service charge at this location.
- Record food-and-beverage minimums even when the guest-count total is lower.
- Add mandatory bartender, station, cake, corkage and vendor-meal charges.
- Keep gratuity separate until the contract says it is included or required.
A short email that gets a useful answer
“Could you send an itemized estimate for our date and guest count showing the food-and-beverage subtotal, every mandatory service or administrative charge, the taxable subtotal, sales tax, and whether staff gratuity is included or expected separately? Please also show which charges count toward the food-and-beverage minimum.”
Save the response with the proposal. A written calculation is easier to compare and gives both sides a shared reference if the package changes later.
Questions about plus-plus calculator
What does “++” mean on a wedding venue quote?
It usually means a mandatory service or administrative charge plus sales tax will be added to the stated price. The exact percentages and taxable subtotal must come from the venue proposal or contract.
Does a wedding venue service charge include gratuity?
Not necessarily. Many service or administrative charges are retained by the business and are not distributed as tips. Ask in writing whether staff gratuity is included, optional or expected in addition.
Is sales tax calculated after the service charge?
Sometimes. Tax treatment varies by jurisdiction and by the type of charge. Use the contract calculation and local tax rules rather than assuming every venue compounds tax the same way.