The mandatory employer MPF contribution mirrors the employee side exactly: 5% of relevant income, no contribution required below HK$7,100/month, and a hard cap of HK$1,500/month once monthly salary passes HK$30,000. That cap is why hiring someone on a very high salary doesn't keep adding proportionally to your MPF cost, it flattens out well before six figures.
What changed on 1 May 2025 is the other half of the real cost picture. Employers used to be able to offset severance pay and long service payment obligations against the accrued benefits from their own mandatory MPF contributions, which softened the actual cash cost of losing long-tenured staff. That offsetting is now gone for service from that date forward, so any employee's future severance/LSP entitlement is a genuine, largely un-offset liability sitting on top of ongoing payroll cost.
This calculator surfaces that liability as a one-year accrual estimate using the same statutory formula (two-thirds of wages, capped at HK$22,500, per year of service), so you can see roughly how much exposure builds up for every additional year someone stays on payroll, not just what MPF alone costs you today.