(a)in the case of every individual or Hindu undivided family or association of persons or body of individuals, whether incorporated or not, or every artificial juridical person referred to in sub-clause (vii) of clause (5/) of section 2 of the Income-tax Act, or co-operative society or firm, being a non-resident, calculated at the rate of ten per cent, of such tax, where the amount of the aggregate of such amounts collected and subject to the collection exceeds one crore rupees;