our client business is xerox copy shop he is liable a gst no.and What is a gst rate tax his turnover is 25 lakh

Reply-As per section 22(1) of the CGST Act, Every supplier shall be liable to be registered under this Act in the State or Union territory, other than special category States, from where he makes a taxable supply of goods or Services or both, if his aggregate turnover in a financial year exceeds twenty lakh rupees.

As your turnover exceeds 20 lakhs you are required to obtain registration.

In our opinion it will fall under Other manufacturing services; publishing, printing and reproduction services; materials recovery services, other than (i) above.(SAC code 9989)
[S.No.27(ii) of Noti. No.11/2017-CT (Rate) (S.No.25) Dated: 28.06.2017] and taxale @18%GST.