Overview
What is it:
Negative discretion is a right many incentive plans (both short-term and long-term) reserve for the compensation committee to reduce a calculated, formulaic payout after the fact. In the case of PSUs, this can occur even once performance has been measured and a Performance Multiplier applied. In most plans this runs one direction only, downward; a smaller number of plans reserve discretion in both directions. Negative discretion is more commonly expected in short-term or annual bonus plans, which is part of why it surprises people when it shows up in a PSU plan instead.
Why does it matter:
Recognizing that this right exists reduces the surprise if the compensation committee chooses to act on this discretion. A calculated payout isn't always the guaranteed final word. It is worth checking your own plan document for whether your committee has reserved this authority before assuming a strong formulaic result is locked in.
What do people most often get wrong:
People often assume the number the formula produces is automatically the number that gets paid. Many plans give the compensation committee explicit authority to adjust that number downward, and it's a real, disclosed practice, not a theoretical possibility, even when the underlying performance was genuinely strong.