Make sure you already install PHP in your local machine. If not yet you can go to this reference link to install them.

• http://php.net/manual/en/install.macosx.php
• http://php.net/manual/en/install.unix.php

This is the rule for our 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%

This is PHP code that contains the calculation to count PHP 21 In Indonesia

Following files as described like below

• Abstract Request. An abstaction class to fetch the request for PPH 21
• Tax Exception. An exception class to handle the error for tax within the main class
• Tax Request. Actual class to fetch the request to be used together with main tax class
• Index. How we use our tax class

Just pass the parameter to the function inside index.php class which indicates the annual income you may receive

countPHP21(75000000);

Type this command inside your terminal

cd ~/your-local-project
php -S localhost:3000

Found the issue please go to this link