An embodiment of the present invention supports an audit activity more appropriately.;An internal audit support system includes: a terminal relating to a first division that undergoes an internal audit, a terminal relating to a first audit division that performs the internal audit of the first division, and a main system that connects to the terminal relating to the first division and the terminal relating to the first audit division through a network, in which the terminal relating to the first division includes a display unit that displays the item relating to the internal audit, and an input unit that inputs information about suitability for the item, and the main system includes a storage unit that stores the information in association with the item, and a first determination unit that determines one of a plurality of indicators indicating a degree of control for a major item including one or a plurality of items by using the information, and the terminal relating to the first audit division includes a display unit that displays the one determined indicator.
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