DEFINITION of 'And Interest'
A slang phrase used when quoting the price of a fixedincome instrument with accruing interest. When revealing the sale price of a bond, a broker or salesman will often express the value as the clean price "and interest".
Also written as "andinterest".
BREAKING DOWN 'And Interest'
For example, let's examine a bond, selling at par, paying an annual coupon of $8, with a par value of $100. It has been exactly half a year since the bond last paid a coupon. If you wish to purchase this bond, the likely quote you will hear is "$100 and interest". The $100 represents the clean price of the bond. The "and interest" is equal to the accrued interest at the time of sale. Since the bond pays a coupon once a year, and half a year has passed, the "and interest" equals $4 ((1/2) x 8).

Clean Price
The price of a coupon bond not including any accrued interest. ... 
Flat Bond
A debt instrument that is sold or traded without accrued interest, ... 
Dirty Price
A bond pricing quote referring to the price of a coupon bond ... 
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The face value of a bond. Par value for a share refers to the ... 
At Par
A term that refers to a bond, preferred stock or other debt obligation ... 
Deferred Interest Bond
A debt instrument that pays interest only upon maturity. Unlike ...

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