Property Tax Calculation 1. FOR TRIENNIAL REVISION OF ASSESSMENT ARV is fixed by increasing minimum @ 10-20% – for residential properties 20-30% – for residential rented properties 30-40% for Commercial properties 40-50% Commercial rented properties 50% and above- for the properties having additional construction over the ALV previously fixed T.A. 2. CALCULATION OF PROPERTY TAX:Property Tax = (ALV) X 5 /100 X 17.5 17.5 % = (12.5 % House Tax + 5 % Water Tax)