Mining Equipment Impairment — Network Difficulty Spike
Recognizing an impairment loss on mining equipment when network difficulty increases make machines unprofitable.
| Account Name | Type | Debit ($) | Credit ($) |
|---|---|---|---|
| Impairment Loss — Mining Equipment | Expense (+) | 800,000.00 | - |
| Accumulated Impairment — Mining Equipment | Contra-Asset (+) | - | 800,000.00 |
💡 Accountant's Note
Mining equipment is impaired when its recoverable amount (higher of fair value less costs to sell and value-in-use) falls below its carrying value. A rapid increase in network difficulty (reducing mining reward per unit of hashrate) or a sharp fall in Bitcoin price can render older generation miners uneconomic, triggering impairment. Under IAS 36, impairments are recognised in the period they occur.
Practitioner & Systems Framework
💻 ERP Architecture
Mining equipment impairment is assessed at the individual asset level or at the level of the CGU (Cash-Generating Unit) — typically a mining farm or all equipment of the same generation. The value-in-use calculation uses a DCF model: projected mining revenue (based on Bitcoin price, network difficulty, and hashrate) less electricity cost and pool fees, discounted at the WACC. If VIU is below the carrying value, the carrying value is written down to the recoverable amount. Key drivers of impairment are: Bitcoin price decline, network difficulty increase (both reduce revenue), or electricity cost increase (reduces margin). Impairment is reversible under IAS 36 (unlike IAS 38 cost model) if the recoverable amount subsequently increases.
⚠️ Audit Flags
Auditors obtain the impairment model and independently test the key assumptions: Bitcoin price forecast, network difficulty projection, electricity cost, and discount rate. The Bitcoin price assumption is the most sensitive — small changes in the price assumption significantly impact the VIU calculation. Test that the discount rate reflects the risk-specific to cryptocurrency mining. Confirm that CGU identification is appropriate — machines of different generations with different profitability profiles may be separate CGUs. Review the impairment reversal policy — reversals are permitted under IAS 36 (PPE) but must not exceed the original cost net of depreciation.
📄 Required Documentation
IAS 36 impairment model (VIU calculation with assumptions), CGU identification, Bitcoin price assumption and source, network difficulty forecast methodology, electricity cost inputs, WACC/discount rate derivation, mining profitability analysis by equipment generation, impairment reversal assessment, and Board approval of key assumptions in the impairment model.
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