This systematic review examined the effectiveness of financial incentives when implementing overweight and obesity management programs. The evidence suggested that incentivising weight loss is effective in the short term while the incentives are in place. There are various incentive designs, and although the relative effectiveness of each of these on weight loss is not clear, it appears that positive incentives increase the uptake into programs and may reduce dropouts. There is a need, however; to explore ways to maintain weight loss in the longer term. Here incentives for weight maintenance may play a role.