What does one more wedding guest really cost?
The cost of one more wedding guest includes every guest-dependent item plus service charge, tax, and gratuity on their stated bases. Fixed venue and planning costs belong in the all-in average, not the marginal guest cost.
Use the formula
- Marginal guest cost
- Guest-dependent items + Applied service charge + Applied tax + Applied gratuity
- Affordable guest count
- floor((Budget - Fixed costs - Exclusions) / Marginal guest cost)
Worked example
The verified illustration shows how an $85 plate becomes a $214.50 marginal guest cost under the stated quote assumptions.
| Line | Result | Meaning |
|---|
| Per-guest items | $165.50 | Food, beverage, stationery, rentals, and decor share |
|---|
| Service charge | $26.62 | 22 percent of the stated food-and-beverage base |
|---|
| Tax | $16.33 | Applied to the stated taxable base |
|---|
| One more guest | $214.50 | Marginal cost under the illustration |
|---|
Repeatable method
- Separate fixed and guest-dependent costs.
- Identify the base for every percentage charge.
- List quote exclusions.
- Run the remaining budget backward to a whole-person guest count.
Questions and answers
- Is plate price the guest cost?
- No. It omits other guest-dependent items and may omit percentage charges.
- Is service charge always a gratuity?
- No. Confirm the contract and the rules that apply to the transaction.
Sources
General planning information, not tax, legal, or financial advice. Verify the contract and local rules.