Free, highly accurate online calculation tool. Process your calculations securely in real time with comprehensive formula transparency, unit flexibility, and instant results.
Split dining checks, calculate customizable gratuity percentages pre-tax or post-tax, apportion shared taxes and delivery fees, and compute individual shares with exact itemized or even distribution.
S and sales tax amount T = S imes r_{ ext{tax}}. ext{Tip} = S imes r_{ ext{tip}}. Total check: ext{Total} = S + T + ext{Tip} + ext{Fees}.N guests: ext{Share} = rac{ ext{Total}}{N}. For itemized diner i: ext{Share}_i = S_i imes (1 + r_{ ext{tax}} + r_{ ext{tip}}) + rac{ ext{SharedItems}}{N}.sum ext{Share}_i = ext{Total}.Industry etiquette standards recommend tipping on the pre-tax subtotal. Sales tax is a government assessment, not a service provided by restaurant staff. However, calculating tip on the total bill is common practice for convenience and provides a slightly higher gratuity to waitstaff.
Shared dishes and drinks should have their subtotal divided evenly only among the guests who consumed them, with tax and tip multipliers (1 + tax_rate + tip_rate) applied proportionally to each person's shared and individual portions.
In the United States, standard sit-down dining gratuity ranges from 18% to 22% (15% for acceptable service, 20% for good service, 25% for exceptional service). Buffet service typically warrants 10%, food delivery 15–20% (minimum $3–$5), and bartending $1–$2 per drink or 20% of the bar tab.
When a total divided by group size yields fractional cents (e.g. $100 / 3 = $33.3333...), the calculator rounds to two decimal places ($33.33) and automatically accounts for the remaining 1-cent variance on the primary payer's share to ensure exact zero-balance reconciliation.