Tipping is not required, but it’s considered polite. Yes, the moving company is already charging the customer to do the job, but in reality, the movers are doing them a huge favor and potentially saving them from injury, too. Offering movers a tip is a way for the customer to express their gratitude for their manual labor, especially if they do a great job, show up on time, are friendly, and handle the items with care. If customers are happy with the service and able to tip, it's a good idea to estimate 10 to 20 percent of the total cost.