What's the standard tip percentage in the US?

Standard tipping in the US is 15-20% for good service at restaurants. 15% is acceptable for adequate service, 18-20% for good service, and 20%+ for exceptional service. For poor service, 10% or speaking with management is appropriate.

Should I tip before or after tax?

Traditionally, tips are calculated on the pre-tax amount of your bill. However, many people tip on the post-tax total for convenience since it's the prominent number. Either method is acceptable, though pre-tax is more accurate.

How do I split a bill with different meals and drinks?

For uneven splits, calculate each person's subtotal, then apply the tip percentage to their portion. Alternatively, add the total tip to the bill and divide by the number of people for an even split. This calculator helps with both methods.

Do I need to tip on takeout or delivery orders?

For takeout, 10% is courteous but not required. For delivery, 15-20% is standard, with a minimum of $3-5. Consider distance, weather conditions, and service quality. Many delivery apps suggest appropriate tip amounts based on these factors.