Determination of service value in works contracts: taxable portion set by gross contract less goods/land value, with fallback apportionment rules. Rule 2A fixes the service portion of a works contract as the gross amount charged less the value of property in goods (or goods and land/undivided share of land where applicable), excluding VAT or sales tax on such goods; it enumerates service components (labour, subcontractor payments, design, hire of machinery, consumables, establishment costs, related expenses and profit) and, where primary valuation is not possible, prescribes fallback apportionment rules and definitions for original works and total amount, while disallowing CENVAT credit on inputs used in the works contract.