PPH21 This code build with PHP to calculate PPh 21 in Indonesia Rule of PPh 21 Tax 0 - 50.0000.000 IDR = 5% 50.0000.000 - 250.0000.000 IDR = 15% 250.0000.000 - 500.0000.000 IDR = 25% 500.0000.00 - above = 30%