Usaha Mikro, Kecil, dan Menengah (UMKM) memiliki peran penting dalam perekonomian Indonesia. Namun, kontribusi UMKM terhadap perpajakan Indonesia masih jauh dari maksimal. Penelitian ini menguji pengaruh tiga faktor penting terhadap kepatuhan pajak pada Usaha Mikro di Indonesia, yaitu Pengetahuan Pajak, Tarif Pajak, serta Kesetaraan dan Kewajaran, dengan menggunakan regresi berganda. Survei secara online dilakukan untuk mengumpulkan data dari 122 responden di kota Surabaya dan berfokus pada wajib pajak perusahaan mikro. Hasil penelitian menunjukkan bahwa Pengetahuan Pajak, Tarif Pajak, serta Kesetaraan dan Kewajaran berpengaruh signifikan terhadap kepatuhan pajak di kalangan wajib pajak usaha mikro. Pengetahuan perpajakan memiliki pengaruh paling signifikan terhadap perilaku kepatuhan di kalangan wajib pajak.

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Micro, Small, and Medium Enterprises (MSMEs) have an essential role in Indonesia's economy. However, the contribution of MSMEs to Indonesian taxation is still far from reaching the maximum point. This research examines the effect of three critical factors on tax compliance among the Micro Enterprises in Indonesia, namely Tax Knowledge, Tax Rate, and Equity and Fairness, by using multiple regression. An online survey was conducted to collect data from 122 respondents in Surabaya and focused on micro-enterprises taxpayers. The result indicates that Tax Knowledge, Tax Rate, Equity and Fairness significantly impact tax compliance among the micro-business taxpayers. Tax Knowledge had the most significant impact on compliance behavior among the taxpayers.