GTA services to Nepal/Bhutan

Anshuman Basu (account -GST) (1556 Points)

26 February 2020  
we are registered GTA services provider in WB, we will got a order from M/ S ABC company of Nepal from transpotation of matarials from India to Nepal. we will received payment from M/S ABC company.
now questions is what is the tax treatment of GST? what will be our invoice Pattan? is RCM applicable? what is the tax rate? Is ITC applicsble?what is the Place of supply?