HELLO SIR,
I CAN ADD GST TAXATION ON YOUR WEBSITE FOR MORE INFO PLEASE COME TO CHAT.
I have much EXPERIENCE in Web Designing, Web Development, E-Commerce Web Development using technology:
PHP
Codeigniter
Laravel
Cakephp
Wordpress
JSON or ATOM Web services
My-SQL (backend)
For further analysis and discussion regarding your project please come to chat
Thanks