How to compute vat

Yes.... u should take full value of freight 

BUT VAT AND ST ARE EXCLUSIVE TAXES .....SO ACC WILL IT NOT BE THAT IF ST IS APPLICABLE ,NO VAT AND VICE VERSA

Can u levied service tax on freight 

YES AS TRANSPORT IS UNDER REVERSE MECHANISM AND SO ST PAYABLE BY DEALER AND WILL BE CHARGED TO THE NEXT LEVEL OF CONSUMER/DEALER AND THEREFORE ADDED TO INVOICE.....BUT MY Q IS, IS VAT PAYABLE ON ST WHERE BOTH THESE TAXES ARE EXCLUSIVE

if you levied service tax on frieght, then you will calculation of vat only on materials.  

Thank u mam.