The case involves the interpretation and validity of certain provisions in the Calcutta Municipal Corporation Act concerning property taxation A special bench of the Calcutta High Court addressed the issue ... in response to appeals from tenants sub-tenants and landlords challenging the taxation framework under the Act The Act empowers municipal authorities to levy taxes on properties with the revenue intended to fund various civic services in the municipal areas The dispute centers around the determination of the annual value of properties for tax purposes particularly when properties are rented out under rent control laws or sublet by tenants The court examines whether the actual rent received by the tenant including subletting income should be considered in determining the annual valuation for tax assessment purposes