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Split restaurant bills evenly or by itemized food & drinks. Generates a 1-click WhatsApp/iMessage breakdown with fair proportional tax and tip sharing.
When splitting an itemized restaurant check, the fairest method is proportional allocation: each person pays for their exact food and drinks, plus a percentage of the total tax and tip equal to their share of the food subtotal.
Proportional Share Formula: Person's Total = Item Subtotal + (Item Subtotal / Total Food) × (Tax + Tip)
| Service Level | Tip % (US & Canada) | When to Apply |
|---|---|---|
| Standard / Good | 15% – 18% | Standard sit-down dining with attentive service. |
| Great / Exceptional | 20% – 25% | Large groups, complex drink orders, or stellar service. |
| Large Group Auto-Gratuity | 18% | Many restaurants automatically add 18% for parties of 6+. |
Authored by UseCOS Research & Engineering.