Step 1: Explaining Project Scale and Site-Based Execution:
Contract Costing is a specialized variation of Job Costing used for tracking massive, long-term construction and structural projects. The primary features include:
• Site-Based Operations (Away from Factory): Work is physically executed on-site at the location specified by the client (contractee), rather than inside the contractor's own production plant. Examples include constructing dams, bridges, commercial highways, and skyscrapers.
• Long Duration of Projects: Contracts typically span across multiple fiscal quarters or years. This long timeline requires specialized accounting procedures to recognize revenue and calculate periodic notional profits before the entire contract is completed.
Step 2: Explaining Account Structure and Progress Valuation:
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• Independent Ledger Accounts: A separate, dedicated Contract Account is opened in the general ledger for every individual project. All materials sent to the site, direct labor wages, plant depreciation, sub-contracting fees, and on-site expenses are debited directly to that specific project's account to isolate and measure its exact profitability.
• Systematic Progress Certification and Retention Money: Progress is audited periodically by the contractee's architect or surveyor. The contractor's work is classified into Work Certified (formally approved) and Work Uncertified (completed but not yet inspected). Furthermore, the client retains a set percentage of cash, known as Retention Money, as a security deposit until the project is successfully completed and the warranty period has passed.