rake-off

1. N-COUNT If someone who has helped to arrange a business deal takes or gets a rake-off, they illegally or unfairly take a share of the profits. (非法或不正当获得的) 回扣[非正式]

Hall takes a rake-off, often amounting to tens of thousands of dollars on most project deals. 霍尔收取回扣，在大多数的项目交易中经常达到数万美元。