HAFIDZ SAGALA; FAYAKHUN WIBISONO; RAHMADI ZIKRI CHANDRA; ZAHIRA NASWA; RAMADANI RAMADANI; RIZKY NATASYA; GALIH SUPRAJA. Income Tax 21, Understanding, Subject, And Calculation Of Tax On Taxpayer’s Income. International Journal of Economic Research and Financial Accounting (IJERFA), [S. l.], v. 3, n. 4, 2025. DOI: 10.55227/ijerfa.v3i4.344. Disponível em: https://ijerfa.afdifaljournal.com/index.php/ijerfa/article/view/344. Acesso em: 17 apr. 2026.