property-tax Calculation of Property Tax: For Triennial Revision of Assessment A. As per Under Section 73 (a) of Cantonments Act 2006: (Building Value + Land Value)/20 = Annual Rental Value (A.R.V)Calculation of Property Tax(i) House Tax- 10% of ARV(ii) Water Tax- 8.5% of ARV(iii) Conservacy Tax- 15% of ARV subject to Maximum Rs. 36/- B. As per Under Section 73 (b) of Cantonments Act 2006:ARV/ALV is fixed on historic method by increasing in the existing ARV/ALV minimum @Calculation of Property Tax(i) House Tax- 10% of ARV(ii) Water Tax- 8.5% of ARV(iii) Conservacy Tax- 15% of ARV subject to Maximum Rs. 36/-