Turnover under GST

In GST aggregate turnover means the aggregate value of all taxable supplies ( excludeding the value of Inward supplies on which tax is payable by a person on reverse charge basis) , exempt supplies , export of goods or services or both and inter-state supplies of a persons having the same PAN , to be computed on all. India basis but excludes Central Tax , Union Territory tax , integrated tax and cess.
Read section 2 (6) of CGST act 2017

normal B2b inter and intra plus B2c plus exempt sale plus zerorated sales exports etc plus outward Rcm supplies

As per the Provision of Section 2(6) of the CGST Act 2017, AGGREGATE TURNOVER has been defined as under :

"Aggregate turnover means the value of all taxable supply [ excluding the value of inward supply on which tax is payable by a person on Reverse Charge basis ], Exempt supplies, Export of goods or services or both and Inter State supplies of a person having the same Permanent Account Number, to be computed on all India basis, but EXCLUDES Central Tax, State Tax, Union Territory Tax, Integrated Tax and Cess."