Wait a minute.
The premises belongs to 'A'. 'B' is working in the premises of 'A'. The equipments and labour used by 'B' does not belong to 'A'. 'B' is a separate legal entity just like 'A'.
Not 'B' but 'A' is raising the invoice on behalf of 'B' recovering the scan charges from the patient , the services provided by 'B'. But there is no real invoice on rent, its only an understanding.
'A' is recovering the scan charges and reducting rent as a percentage on the scan charges say 30%.
The question is:
is 'A' raising an rent invoice on 'B' for using the premises of 'A'? 'A' is not because its only an understanding that 'A' will charge 30% on the scan charges, whatever be the amount. If 'A' raises invoice for rent, then 'A' will add service tax and 'B' will deduct TDS u/s 194I.
How is 'A' treating the rent recovered from scan charges paid to 'B'? Is 'A' treating it as rent received? If it is then 'B' will have to deduct TDS on that porttion of 30% which is withheld by 'A'.
Is 'B' raising an invoice for scan charges on 'A' or its patients? When 'A' is already charging scaning charges in its invoice for services provided by 'B', how will 'B' raise a separate invoice? And if 'B' is actually raising a rough invoice for the records, then how is 'B' treating the 30% deduction from the scan charges? If 'B' is raising an invoice on 'A', then 'A' can deduct TDS on full amount including the 30% portion u/s 194C.
I am not sure if such services provided by 'A' and 'B' comes under service tax net.