How to Calculate a Tip
Calculating a tip is simple: multiply the bill amount by the tip percentage divided by 100. For example, an 18% tip on a $50 bill: $50 × 0.18 = $9.00.
Quick Mental Math Tips
- 10% tip: Move the decimal point one place left ($50 → $5.00)
- 15% tip: Calculate 10% and add half of that ($5 + $2.50 = $7.50)
- 20% tip: Calculate 10% and double it ($5 × 2 = $10.00)
- 25% tip: Calculate 10% and multiply by 2.5 or divide bill by 4
Should You Tip on Tax?
Etiquette experts generally recommend tipping on the pre-tax subtotal, not the total after tax. However, many people tip on the total for simplicity, which is also perfectly acceptable.
Frequently Asked Questions
Is 15% still an acceptable tip? While 15% was once standard, 18-20% is now the norm for sit-down restaurants in the US. Reserve 15% for average service and tip 20%+ for excellent service.
Should I tip on takeout? Tipping 10-15% on takeout has become increasingly common, especially since 2020. Staff still prepare and package your food.
How much should I tip for large groups? Many restaurants add an automatic gratuity (usually 18%) for groups of 6 or more. Check your bill before adding an additional tip.