1. Central Government has issued notification No.29/2008-Service Tax, dated 26.06.2008 to exempt fully from levy of service tax on supply of transport vehicles (goods carriage) to a goods transport agency (GTA) to be used for transport of goods by road [section 65(105)(zzzzj) of the Finance Act, 1994].
Services provided by a GTA in relation to transportation of goods is leviable to service tax under GTA service [section 65(105)(zzp)]. Service tax for the GTA service provided is payable only on 25% of the amount charged for providing the GTA service and the balance amount is exempt from levy of service tax.
If your freight is Rs 10000, then the ST to be paid on Rs 2500 Only.
Being outward transportation is not your output service, you cann't deduct this freight. You have to pay the Service Tax on both Inward and Outward transportation.
You have Two Options
1. Either Go For Refund on Service Tax Paid on the Export Service ( refer the Notification No 41/2007-ST, dated 6/10/2007)
2. Or Avail the Exemption benefit under Notification No 18/2009-ST date 07-07-2009,
Only The conditions are for fulfill are
1. You have to made an application with the Assistant / Dy Commissioner of Central Excise having Jurisdiction over the factory in the form EXP1
2. Once the application accepted by the AC/DC, you may avail the exemption by quoting the relevant Approval Reference Nos on the Bill
3. You have to file the half yearly return of these exempted services in Form EXP2 as specified in the said Notification.