noun
retroactive discount; back margin
A business term for a discount or rebate paid retroactively by a distributor or manufacturer to a retailer, often based on sales volume or as an incentive. Wasei-eigo; not used in English with this meaning.
wasei-eigo (Japanese-coined English), from back margin
この商品は、販売実績に応じてバックマージンが支払われる。
A back margin is paid on this product based on sales performance.
Variant spelling with a middle dot; less common but still used.
リベート is a more general term for a rebate or kickback, while バックマージン specifically refers to a retroactive discount paid in a distribution channel.
Wasei-eigo from English 'back' and 'margin'. The exact derivation is uncertain, but it likely combines the idea of a margin (profit) given back to the retailer.