Crypto Impairment vs Fair Value: The Measurement-Model Shift

Behind every crypto balance sheet sits one structural choice: is the asset held at cost less impairment, or remeasured to fair value? US GAAP switched models with ASU 2023-08; IFRS, for the most part, did not. This article compares the two heads-on, rather than working through either framework in isolation: the asymmetry between an impairment model and a fair-value model, why the legacy cost-less-impairment treatment was criticised, and the earnings-volatility consequence that lands on finance teams once fair value applies. The framework-by-framework detail lives in the US-GAAP ASU 2023-08 hub and the IFRS IAS 38 hub.

The two models in brief

• A cost-less-impairment model is asymmetric: written down on impairment, never written back up. A fair-value model is symmetric: remeasured each period, capturing gains and losses alike.
• Under US GAAP, the legacy indefinite-lived intangible (cost less impairment) gave way to ASU 2023-08 fair value through net income (see ASU 2023-08).
• Under IFRS, the default remains the IAS 38 cost model; fair value is available only via the conditional revaluation model, with gains routed to OCI (see IAS 38 and crypto).
• The old model understated holdings in a rising market and booked impairment on every dip, which made it economically misleading.
• Fair value moves earnings with crypto price every period, a covenant and KPI consequence finance teams have to brief.

The asymmetry, precisely

Cost-less-impairment: the asset enters at cost; if its value falls below carrying amount it is impaired (written down); if value later recovers, US-GAAP indefinite-lived intangible treatment did not permit a write-back. One-way down.

Fair value: the asset is remeasured to fair value at every reporting date, with the change recognised. Both an increase and a decrease are captured. Symmetric.

The difference is not cosmetic. Over a volatile cycle, the impairment model converges to "lowest point ever observed, minus more on the way down," while the fair-value model tracks the actual position.

What US GAAP did

Legacy US GAAP had no crypto standard, so crypto was an indefinite-lived intangible: cost-less-impairment. It was widely criticised for misrepresenting the economics of an asset with an observable market price. ASU 2023-08 (Subtopic 350-60) replaced it with fair value through net income, effective for fiscal years beginning after 15 December 2024 (see ASU 2023-08). US GAAP crypto is now symmetric and in net income.

What IFRS did (mostly) not do

IFRS never adopted a mandatory fair-value model for crypto. Under the IFRS IC June 2019 decision, non-broker-trader crypto is IAS 38, defaulting to the cost model — cost less impairment, no write-up. Fair value exists only under the revaluation model, which:

• requires an active market for the asset; and
• routes increases to other comprehensive income (revaluation surplus), not profit or loss.

So IFRS still largely runs the impairment-style model US GAAP has now left. The exception is the IAS 2 broker-trader path (fair value less costs to sell through P&L — see crypto held as inventory).

The framework gap, side by side

A dual-reporting Web3 entity will show different crypto carrying amounts and different earnings under US GAAP and IFRS. That gap is structural, not a reconciliation error (see IFRS vs US GAAP for crypto).

The earnings-volatility consequence

Fair value through net income means crypto price movements hit earnings every period, including interim. Net income now co-moves with the crypto market. Practical effects:

• Debt covenants keyed to earnings or net assets can swing with token price.
• Earnings-based KPIs and guidance become more volatile.
• Forecasting and tax provisioning must model price sensitivity.

This is a finance-team communication task before the first fair-value period closes — not an audit-time surprise.

Practical guidance

1. Identify your framework and scope — US-GAAP-in-scope → mandatory fair value; IFRS → IAS 38 default.
2. Stop assuming "impairment only" under US GAAP — write-ups are now required in scope.
3. For IFRS, justify any revaluation with an active market; otherwise stay on the cost model.
4. Model earnings sensitivity to crypto price and brief covenant/KPI owners.
5. For dual reporters, reconcile the structural gap — keep both carrying bases in the ledger.
6. Document the model and the judgements for audit.

Choosing a tool that holds both bases

If you report under both frameworks, or expect to, the subledger has to produce a fair-value number and a cost-less-impairment number from the same transaction history. If you are evaluating one — Cryptio and Bitwave are common choices — confirm it can:

• store a cost basis, an impairment history, and a period-end fair value per asset;
• produce a US-GAAP fair-value figure and an IFRS cost-less-impairment figure from one record;
• keep an audit trail of every impairment and remeasurement, not just the latest carrying amount;
• surface the price sensitivity that covenant and KPI owners need once earnings move with crypto price.

The model shift is only as defensible as the underlying record.

How Wag3s fits in

Wag3s Ledger maintains a cost basis, an impairment trail, and a period-end fair value per asset, producing the US-GAAP ASU 2023-08 fair-value figures and the IFRS IAS 38 cost-less-impairment figures from one record, with the reconciliation for dual reporters and the sensitivity data for covenant and KPI owners. The model that applies depends on your framework and facts, so Ledger produces the figures and the audit trail your auditor tests rather than making that determination for you. See the Ledger product page and the Wag3s for accountants page.

Further reading

• FASB ASU 2023-08: Fair-Value Crypto Accounting
• IAS 38: Crypto as an Intangible Asset
• Crypto Held as Inventory (IAS 2)
• IFRS vs US GAAP for Crypto
• Stablecoin Accounting Treatment
• Crypto Audit Readiness

Sources

• FASB — Accounting Standards Update 2023-08, Subtopic 350-60: fair value through net income replacing the legacy indefinite-lived intangible (cost-less-impairment) treatment.
• IFRS Interpretations Committee — Holdings of Cryptocurrencies, June 2019 agenda decision.
• IFRS — IAS 38 Intangible Assets: cost model (cost less impairment) and revaluation model (active market; increases to OCI).
• IFRS — IAS 2 Inventories: commodity broker-trader fair value less costs to sell through profit or loss.