What it is
Bonuses over a threshold are usually paid as an initial chunk plus annual installments. Each installment appears as an entitlement line in the month it pays.
2026 rate
Per your contract.
What goes wrong
Know your installment schedule from the contract. Anniversary installments arriving late or not at all is a known problem, and it is on you to catch it because no system flags it to you. Bonuses can also be recouped if you do not complete the obligated service.