ASC 820 Level 3 Fair Value Measurement — Core Rule
Under ASC 820 Level 3 Fair Value Measurement, entities must estimate fair value using unobservable inputs — developed from the entity's own assumptions about what market participants would use — when observable market data are unavailable or insufficient, prioritizing exit price in the principal market.
How ASC 820 Level 3 Fair Value Measurement Works
- Definition of unobservable inputs: Level 3 inputs reflect the entity's own assumptions about market participant assumptions, including risk adjustments, when little or no market activity exists for the asset or liability. Entities must maximize the use of relevant observable inputs even within a Level 3 measurement (ASC 820-10-35-36).
- Valuation techniques: Three approaches are permissible — market approach (comparable transactions), income approach (discounted cash flows, option-pricing models), and cost approach (current replacement cost). Entities must use the technique(s) most appropriate given available data, and must use a consistent technique unless a change produces a more representative fair value (ASC 820-10-35-24 through 35-26).
- Risk adjustment requirement: The fair value estimate must incorporate a risk premium that a market participant would demand for the uncertainty inherent in the cash flows or inputs. Ignoring this adjustment systematically overstates the fair value of Level 3 assets (ASC 820-10-35-9).
- Highest and best use: For nonfinancial assets, the fair value measurement must reflect the highest and best use from a market participant's perspective, even if the entity intends a different use (ASC 820-10-35-10A through 35-10C).
- Rollforward and disclosure: Entities must present a reconciliation (rollforward) of opening to closing balances for recurring Level 3 measurements, separately showing total gains/losses in earnings vs. OCI, purchases, sales, issuances, settlements, and transfers in/out of Level 3 (ASC 820-10-50-2(d)).
- Transfers into/out of Level 3: Transfers must be disclosed and recognized as of the beginning or end of the reporting period using a consistent policy. The reason for the transfer (e.g., loss of observable market data) must be disclosed (ASC 820-10-50-2(c)).
ASC 820 Level 3 Fair Value Measurement — Practical Example
Scenario: A private-equity portfolio company holds an interest in a thinly traded mortgage-backed security (MBS) with a carrying value of $2,000,000. At quarter-end, no active market exists. Management uses a discounted cash flow (DCF) model with internally developed default rate, prepayment speed, and discount rate assumptions — all Level 3 inputs. The model produces a fair value of $1,750,000, a $250,000 decline.
Assumptions
- Discount rate: 9.5% (reflects illiquidity premium market participants would demand)
- Projected cash flows: $200,000/year for 12 years
- Credit loss adjustment: 15% haircut on projected cash flows
Journal entry — recording the fair value loss (trading security)
| Account | Dr | Cr |
|---|
| Unrealized Loss on MBS (Income Statement) | $250,000 | |
| Fair Value — MBS Investment | | $250,000 |
If classified as AFS (available-for-sale)
| Account | Dr | Cr |
|---|
| OCI — Unrealized Loss on AFS Securities | $250,000 | |
| Fair Value — MBS Investment | | $250,000 |
The rollforward disclosure would show: Opening balance $2,000,000 → Total losses recognized in earnings or OCI $(250,000) → Closing balance $1,750,000.
ASC 820 Level 3 Fair Value Measurement — Common Pitfalls
- Ignoring the exit price concept: Practitioners sometimes use an entry price (what the entity paid) rather than the exit price (what a market participant would pay to sell the asset) in developing DCF assumptions. ASC 820-10-35-5 explicitly requires an exit price — using cost as a proxy without adjustment violates the standard and is a frequent audit finding.
- Insufficient risk premium: Entities frequently use their own cost of capital or internal hurdle rate as the discount rate rather than a market participant's required rate of return. This omits the illiquidity and uncertainty premiums that a third party would demand, systematically overstating Level 3 fair values.
- Inadequate sensitivity disclosures: ASC 820-10-50-2(g) requires entities to provide a narrative description of the sensitivity of the Level 3 fair value to changes in unobservable inputs and the interrelationships between inputs. Many preparers provide boilerplate language rather than quantified sensitivity ranges, drawing SEC comment letters.
ASC 820 Level 3 Fair Value Measurement — Key Paragraphs
- ASC 820-10-35-36 — Defines Level 3 unobservable inputs and the requirement to maximize use of observable inputs even at Level 3.
- ASC 820-10-35-24 through 35-26 — Selection and consistency of valuation techniques (market, income, cost approaches).
- ASC 820-10-35-9 — Risk adjustment requirement embedded in Level 3 fair value estimates.
- ASC 820-10-50-2(d) — Rollforward reconciliation requirements for recurring Level 3 measurements.
- ASC 820-10-50-2(g) — Sensitivity disclosure for unobservable inputs and their interrelationships.
- ASC 820-10-35-5 — Exit price (not entry price) as the fundamental measurement objective.