Electronic monitoring (EM) is used to collect fisheries independent data to support scientific analyses and management decision-making. In Australian Commonwealth fisheries, EM is also used to validate and improve logbook data reporting at the individual vessel level. We compared five years of EM and logbook reported data in the Australian Eastern Tuna and Billfish Fishery to examine congruence at an individual vessel level and determine how EM and logbook reporting can potentially be improved in the future. At a fleet-wide level, overall congruence was higher for retained than discarded catch and higher for endangered, threatened and protected (ETP) groups (i.e., seabirds) than at an ETP species (i.e., wandering albatross) taxonomic level. Importantly, vessel-level estimates of congruence revealed significant inter-vessel variation in logbook reporting performance. For example, a small number of vessels were not reporting any discards despite EM analysts observing these occurrences, whilst other vessels had perfect congruence for some species across all audited sets. This result highlights the capability of EM to identify vessels with general (i.e. universal) or specific (e.g. particular species) logbook reporting deficiencies, that enable managers to undertake either incentive-based, education-based or (where required) compliance-based action to ensure that those vessels improve their future logbook reporting.