discount policy
Refers to a policy or strategy of offering discounts, often used in business, retail, or economic contexts.
This store's discount policy is 20% off everything every Friday.
Sales increased after introducing a new discount policy.
割引 means 'discount' itself, while 割引政策 refers to the policy or strategy behind offering discounts.
政策 is a general term for 'policy'; 割引政策 specifies a policy related to discounts.
Compound of 割引 (discount) and 政策 (policy).