Methods, systems, and computer-readable media for detecting duplicate deposit items at a point of capture are presented. In some embodiments, a computing platform may receive image data of a deposit item presented for deposit. Subsequently, the computing platform may obtain magnetic ink character recognition (MICR) information for the deposit item. Then, the computing platform may extract information from one or more visible fields of the deposit item. Next, the computing platform may compare the MICR information and the information extracted from the one or more visible fields with item history information to determine a confidence score indicative of whether the deposit item is a duplicate of a previously-deposited item. If the confidence score is less than a threshold, the computing platform may reject the deposit item at the point of capture. Alternatively, if the confidence score is not less than the threshold, the computing platform may accept the deposit item.