eart work agreement given by irrigation department uttar pradesh

If you are doing only this work in this financial year, it means your turnover is less than 20 lakh, or if your total turnover per year is lass then 20 lakh, then registration is not required. No registration, no gst, no return. But if you are a registered dealer then, highly Labour oriented contract is 5%

Bill book mai hsn code kya ayega

or 3.5 lack mai 1%cess or2%tds laga hy
GST apply after deduct cess or tds
or total value of contact

gst applicable on ur billing value 

hsn code?