Restaurant (sit-down)18–20% standard, 25%+ excellent service
Delivery (DoorDash, UberEats)15–20% of order, min $3–5
Uber / Lyft15–20%, more for long trips or great drivers
Taxi (traditional)15–20%
Hair salon / barber15–20% of service cost
Hotel housekeeping$2–5/night, left daily
Pizza delivery$3–5 or 15%, whichever is higher
Coffee shop (counter)$1–2 or 10–15% for made drinks
These are common customs, not rules. Tip what fits the service and your budget.