Input service tax credit amount

Suppose a service received an Invoice from Service provider with following details- Service Provided Rs. 18000 Service Tax Rs. 2225 Total Rs. 20225 Now service receiver has paid to provider Rs. 18000 in full and final settlement. Can the service receiver claim Input Service Credit of Rs. 2225 while providing service in future? Or will service receiver assume Rs. 18000 as inclusive of Service tax and Take credit for Rs. 1980 by back calculation??