Original Issue Discount (OID) is normally offered on some bonds and similar obligations in lieu of those bonds earning interest. OID is reported to the taxpayer on Form 1099-OID and is considered interest income on the tax return.
For more information about entering Form 1099-OID in both TaxSlayer Pro and ProWeb, see the knowledgebase article here.
Additional Information:
Instructions for Forms 1099-INT and 1099-OID, Interest Income and Original Issue Discount