Suggested by Abdulmajeed Alghazali – Needs Votes
Ability to setup employee discount in retail module to work from MPOS:
- 10% discount (10% as example only)
- Yearly cap of 10,000 total purchase or 1000 total discount (Yearly cap 10,000 as example only).
If the employee reach to his cap amount, then the discount will not work for this specific employee.
Status Details
Thanks for the feedback. We will continue to monitor the votes to determine its consideration into our feature backlog. - Boyce Zhu, Principal Product Manager for Dynamics 365 Commerce

You can use a loyalty program for this
tier 1 you receive the discount
tier 2 ((after exceeding the Yearly cap ) -> no more discount
each year start a new period