I have one client who is doing contract for works with Govt. undertaking co. We have generally charge regular 12.36% ST on Bill now thay told us they already paid to the ST department 50% on ST. Bill already generated and ST return already been filed for Apr14 to sept'14.
As per my knowledge I have to amend ST regs. with works contract so that in our bill from now onwards we can charge 50% service tax.
My question which document should I collect from Govt. undertaking co. as they payment ST as per Govt. rule. So that in future at the time of ST return filing or any misconduct can't happened with ST department.
Please advice.