Actual cost determination: prescribed reductions and special transfer rules define the taxable cost of business assets. Computation of actual cost sets actual cost as the assessee's purchase cost reduced by third party contributions, GST input credit, creditable customs duty and any subsidy, grant or reimbursement attributable to acquisition; cash payments in non specified modes for acquisition are excluded. Non attributable subsidies are apportioned by Ax(B/C). A table prescribes continuity, limits and adjusted cost rules for amalgamation, demerger, inventory conversion, gift or inheritance, inter group transfers, reacquisition, prior use with depreciation, corporatisation, research related deductions, assets brought from abroad, interest on acquisition, and cases where cost is deemed nil. AO redetermination to counter tax driven transfers requires Joint Commissioner approval.