There is no specific tipping amount, and generally, the customer will offer what they feel is suitable, however, the standard is between 15%-20%, but ultimately it is your decision. Below are a few factors to consider when calculating the tip.
1) The physical and environmental conditions on moving day. The area you are moving can be impacted by weather conditions. Where manipulating the items inside your space can be challenging enough, adding extreme outdoor temperatures only makes the coming and going more difficult. Showing your appreciation for their extra efforts and enduring freezing temperatures, heavy rain or snow fall, or hot days can be indicated through your tipping.
2) Obstacles of the move. All houses are different and unique as they present their own challenges. For example, moving a one-bedroom apartment and the strategies involved differ greatly with that of a four-bedroom apartment. Homes that features more than one story and have to use stairs to travel. If you improperly packed or have a short window where the movers go above the call of duty. Acknowledging their hard work can be a great way to offer your gratitude with compensation.
3) Mover service quality. Based on what you saw, where personal assessment varies, you provide a larger tip if you felt they executed better work. No matter how small it is, it is recommended to tip each worker and do not give money for one worker to distribute as it can cause chaos.