In brief
A retention bonus is a payment contingent on you still being employed on a specific date. The headline number — the amount — is the part companies announce. The parts that determine whether you ever see it are in the agreement, and they deserve a slow read.
The three terms that matter
First, the vesting or payment date, and whether it is one date or several. A $100,000 retention bonus paid in four quarterly installments is a different instrument than $100,000 paid at the one-year mark.
Second, the repayment clause. Many retention bonuses must be repaid, in full or prorated, if you leave within a set period after receiving them. A bonus you received eight months ago can still be partially owed back.
Third, the termination provisions. Some agreements pay out if you are laid off; many do not. Some are void if you are terminated for cause, with "cause" defined broadly. The difference between these versions is the entire value of the bonus.
Continued
“A retention bonus is not a reward for staying. It is a price on leaving.”
Taxes change the math
Bonuses are typically taxed as supplemental wages, and the withholding on a large bonus can be startling. If you ever have to repay a bonus, you may be repaying the gross amount while having received the net, with the tax difference recovered later through your return. The friction is real, and it is yours.
What to do with this
Find your agreement. Note the payment dates, the repayment window, and the termination language. Then run the numbers: the stay-or-go tool computes what walking away costs you, including repayment, so the decision is made with the whole figure rather than the headline.