kickback

noun | \ ˈkik-ˌbak \ | kick·back

1. : a payment (as of money or property) made to one in a position to open up or control a source of income for the payor convicted of receiving kickbacks for referrals — compare bribe, payoff

   Note: A kickback is specifically a payment for income received or to be received. The word is usually not restricted to a return of funds.