Dear Sir,
In this notification only payment of service tax was changed and all other provisions are as it is, means in earlier provisions if service provider were not paid charged service tax in invoices than service receiver should pay 100% service tax on value of services received and if service provider is Paid service tax than service receiver should pay service tax on 40% value of total services,
and as per new provisions if service provider is not paid service tax than service receiver should pay service tax on 50% value of services only and even if service provider is paid service tax on 60% value than service receiver should pay service tax on 50% value of 40% of total service provided.