Parulian, Y.J. and Larasati, A.Y. 2026. Study of Information Systems in Financial Administration within the Regional Secretariat of Bontang City. Indonesian Interdisciplinary Journal of Sharia Economics (IIJSE). 9, 2 (Jun. 2026), 16070-16082. DOI:https://doi.org/10.31538/iijse.v9i2.9904.