A sales spiff is a sales performance incentive fund (often written with an extra "f"), which is a short-term incentive used to motivate sales representatives. Sales spiffs can incentivize sales rep engagement and help to meet immediate sales goals.

A sales spiff requires a set sales goal and an incentive, often a financial incentive or another kind of reward like prizes, recognition, or time off. A successful sales spiff requires a clear objective, a clear articulation of how reps will achieve the goal, a timeframe, a budget, and an incentive. When planning a sales spiff, consider the risk of sandbagging (when reps know a spiff is coming so they wait to close deals they could close earlier) and creating an overly competitive work environment (team spiffs rather than individual spiffs can help avoid this).