A source document framework for accounting systems is described. An apparatus may comprise an accounting application arranged for execution by the processor circuit, the ERP application comprising a source document framework component arranged to create a new source document type to add to heterogeneous source document types, and a source document process component arranged to process source documents of the heterogeneous source document types, with at least one of the heterogeneous source document types including a previous source document type arranged for use with process logic specific to the previous source document type, and process one or more source documents of the new source document type with the process logic specific to the previous source document type. Other embodiments are described and claimed.