Tipping etiquette varies by culture and service type. In the United States, it is customary to tip waitstaff around 15-20% of the total bill in restaurants. For other services, such as taxi drivers or hairdressers, a tip of 10-20% is also appreciated. In contrast, some countries include service charges in the bill, making tipping less common. In places like Japan, tipping can be seen as rude. Always check local customs to ensure you are following appropriate practices when it comes to tipping in different settings.