Original issue discount

Original Issue Discount (OID) is a type of interest that is not payable as it accrues. OID is normally created when a debt, usually a bond, is issued at a discount. In effect, selling a bond at a discount converts stated principal into a return on investment, or interest. The accurate determination of principal and interest is necessary in United States tax law to determine the basis of property and to determine whether an amount paid is deductible and includible as interest, or simply a nontaxable debt repayment.