I always thought that the sum is the same for all at 4, 7, 10… YOE.
3 of us, same YOE, females, non-scholar, same age, same sub grade, received the same amount at 4th year.
This year, at our 7th year, still at the same sub grade, we received varying amounts. The difference in payout after deductions is about $1.5K. The payout amount is the same before deductions but the CPF deductions vary among the three of us. I wonder why this is so.