noun
coupon rate
Financial term: the annual interest rate paid on a bond, expressed as a percentage of the face value.
この債券のクーポンレートは年2%です。
The coupon rate of this bond is 2% per year.
Variant with interpunct; less common in running text.
利回り is yield, which may differ from the coupon rate if the bond is bought at a price other than face value.
Borrowed from English 'coupon rate'.