(1)If any premises assessed to Urban Immovable Property tax are let and their rateable value exceeds the amount of rent payable in respect thereof to the person from whom, under the provisions of sub-sections (1) to (4) of section 26, the said tax is leviable, the said persons shall be entitled to receive from his tenant the difference between the amount of the Urban Immovable Property tax levied from him, and the amount which would be leviable from him if the said tax were calculated on the amount of rent payable to him.