Semiconductors & Foundry Operations

How to Write Off Failed MPW Prototype Wafers

Recording the loss when Multi-Project Wafers (MPW) fail to meet functional specifications during initial silicon bring-up.

Account NameTypeDebit ($)Credit ($)
Loss on Inventory ObsolescenceExpense45,000.00-
Work-in-Process InventoryAsset-45,000.00

💡 Accountant's Note

When prototype wafers fail and have no future economic value, their carrying cost in WIP must be written off to the income statement.

Practitioner & Systems Framework

💻 ERP Architecture

Perform an inventory scrap transaction in the ERP to update quantities and financial values.

⚠️ Audit Flags

High R&D write-off amounts following a failed tape-out cycle.

📄 Required Documentation

Failure analysis report and formal scrap authorization form.

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Expert Analysis by Qusai Ahmad

General Accountant Supervisor & IFRS Specialist

Specialized in SAP GUI automation and Middle Eastern tax compliance. Building digital tools for the next generation of finance leaders.

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