Library cess is the mechanism by which the state government collect revenue for the functioning of public libraries in the state. Library cess is a kind of tax which is levied on the house/property tax, usually it ranges between 5%-10%.For instance, if you buy a land for 1 lakh of rupees and the property tax is 10% and the library cess over it is 5%.Then,the tax alone will amount to 10 thousand and cess will 5% of 10000,that is,500 rupees. Then the total amount you will have to pay is rupees 1,10,500 out of which rupees 500 will go in the budget of libraries.