The fairest simple method is to add the tip to the total bill and then divide by the number of people. This ensures everyone pays an equal share of both the food and the gratuity. If diners ordered vastly different amounts, consider having each person calculate their own subtotal and tip separately.

Calculate the tip on the full bill before splitting. This ensures the server receives the correct total tip amount regardless of how many people are paying. Splitting the bill first and then having each person tip individually can sometimes result in a lower total tip due to rounding.

Use this calculator to determine the total including tip, then divide by the number of people. Many people also use payment apps that let you request exact amounts from friends. Some restaurants will split the check onto multiple cards if you ask, though adding a good tip on the total is still expected.