Abstract: Systems, methods, and computer program products for performing account reconciliation over a computer network. The system comprises means for receiving an invoice, an actual sales database, and a reconciliation network platform. The reconciliation network platform processes the supplier invoice to extract and store the corresponding SII data in a set of SII records. A reconciliation module is provided for selecting, based on at least one Reconciliation Criterion, SII records and ASI records for reconciliation. The reconciliation module is configured for aggregating and storing, for each Reconciliation Criterion, the values of the selected SII and ASI records into a set of corresponding data fields of a Reconciliation Item Record. The reconciliation module further compares the aggregated values of the corresponding data fields of the Reconciliation Item Record and determines a reconciliation status.