"Additional incentives" refers to extra rewards or benefits that are offered to encourage someone to take a particular action or participate in something. Full definition
As a borrower, you may need to provide additional incentive for someone to lend to you. (rocketlawyer.com)
Sometimes pieces of kibble works, but offering them something different than their usual food provides additional incentive to behave. (heavy.com)
Due to intense competition for credit card customers many credit unions and smaller regional banks offer additional incentives such as lower interest rates. (stockmonkeys.com)