Som is correct. If the both employees not live together , the HRA also max Rs. 6000/- p.m (Both), as per W.B. latest notification. But the question is whether they are living another place ? and living a rented house, here is must submit the self declaration of each employee to their employer about the HRA, who will get the max limit of HRA within 6000/- p.m. But never exceed the Max Limit of HRA 6000/- p.m.
