Fair market value for slump sale is computed by comparing asset-based and consideration-based formulas under tax rules. Computation of fair market value for slump sale under section 50B is based on the higher of FMV1 or FMV2, both determined on the date of slump sale. FMV1 is calculated by combining specified asset values and deducting qualifying liabilities, while FMV2 is computed from monetary and non-monetary consideration, including valuations under rule 11UA, registered valuer reports, and stamp duty values for immovable property. The rule also aligns the valuation date with the date of slump sale and adopts the meanings of registered valuer and securities from rule 11U.