cap and collar
noun[S]
ukusBANKING,FINANCE
anagreementin which afinancialorganizationputs anupper(= thecap)and alower(= thecollar)limiton aninterestratefor aloan, ashareprice, etc.:
Wheninterestratesareexpectedtorise, acapandcollarmortgagebecomesmoreattractiveto borrowers.