The Signing Bonus Expense metric gives you a view into the additional expenses incurred post-hiring. Signing bonuses will vary depending on position level within the company, so this metric works best if separated by position level within the company.
(Signing bonus for employee A + Bonus for employee B + Bonus for employee C +…+ Bonus for employee N)/Total number of hires with a signing bonus
Example of KPI target
$10000 in signing bonuses
Average sign-on bonus expense