Dear asheesh,
Taxability will depend upon the couse in which property is letout I mean if u have simple letout the property & rent is only in respect of property & not for anyother thing like furnitute, etc then
Rental Income will be taxable under Income from House Property from which u can deduct Municial Taxes, Standard Deduction of 30% will also be allowed & Any interest on capital borrowed for the purchase/construction of property can also be deducted..
If letting out of premises is part of business operations income from such premises is business income, then u can deduct all legitimate expenditure incurred for rearning such income including Municial taxes, interest on borrowed capital, etc..
For taxability Niki has correctly sugested..