Medical Aid

SUGGESTED

Good day,

Info

We pay 50% of an employees medical aid and for a dependent the employee pays full.

Question

We have an employee (X) who was on a plan.

The payroll looked as follow

Employee /Payroll  Deducted Company Contribution
R6,179.50 R2,397.50

He then moved to a lower plan in Jun and the payroll must have looked like this 

Employee / Payroll  Deducted Company Contribution
R5,232.00 R2,030.00

However the previous Payroll employee never changed it and he continued to pay the R6179.50

The amount that we pay the medical aid provider is correct it is just the deductions we take from him and our contribution that is wrong. 

How do I rectify this? What is the Tax implications?