professional tax by charitable trusts

Gudipati Roja (Audit manager) (131 Points)

11 April 2018  
one of our client charitable trust is paying salary more than 20k p.m. to one employee....but they are not deducting and paying professional tax on it.....when i advised them to pay....they said we don't have offer letters, payslips and employee's income is below exemption limit. so what happens if we dont pay.

So please advise whether they are required to pay professional tax or not considering clients view