Goods or services owed by an entity to an outsider for which cash has been received in advance (Source: FHA Handbook 4370 4 REV-1, Appendix 2)
Income that is due an individual but has not been actually received by that individual and is usually not taxed until it has been
Revenue received prior to being earned such as bonds sold at a premium, advances received on Federal or State program grants, or registration fees received for a term in a subsequent fiscal year