First of all please check up the eligibility as to whether cenvat credit taken by you on services & goods are in relation to the output tax i.e service tax payable by the service provider.
Next, whether your unit is doing any non-excisable or exempted services other than the taxable one. If not, you can take credit and avail the entire credit while paying the out put tax. E.g Cenvat credit : Rs.1200.00 Cess : Rs. 360.00
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