ASC 820, Fair Value Measurement, defines how fair value is measured and disclosed across all asset classes and entity types. For private equity funds, it is the accounting standard that governs every portfolio company valuation in the quarterly NAV — the mark that flows to LP capital account statements, fee calculations, and audited financial statements.
Because most PE portfolio investments are private company equity — illiquid, thinly traded, and valued using unobservable inputs — the vast majority of PE fund portfolios are classified as Level 3 under ASC 820. This is where the standard's requirements are most demanding, where auditor scrutiny is most intense, and where the documentation burden is highest.
This guide covers what ASC 820 requires, how the three-level hierarchy works in practice, what Level 3 documentation looks like at institutional standard, and how the calibration and consistency disciplines hold your marks together across quarters.
What ASC 820 Measures: The Exit Price Notion
ASC 820-10-20 defines fair value as:
"The price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date."
Three elements of this definition create recurring judgment requirements for PE fund marks:
- Exit price, not entry price. Fair value is what you could receive selling the investment today — not what you paid for it. A recent acquisition is measured at its current exit price, which may differ from cost if market conditions have changed, even in the quarter of acquisition.
- Orderly transaction. The standard assumes an arm's-length sale in normal market conditions, not a distressed or forced liquidation. When markets are dislocated, this assumption requires explicit documentation and the exercise of professional judgment about what "orderly" means in the current environment.
- Market participant perspective. Fair value reflects what a hypothetical buyer would pay — not what you believe the investment is worth based on inside information unavailable to market participants. Your knowledge of pending deals, pipeline performance, or insider transactions must be carefully evaluated for what is "known" vs. what is "anticipated."
The Fair Value Hierarchy: Levels 1, 2, and 3
ASC 820 prioritizes inputs to fair value measurement into three levels based on their observability. The level assigned to an investment determines the disclosure requirements in the audited financial statements and the documentation standard applied during the audit.
The most reliable inputs — publicly traded securities with a quoted market price on an active exchange. Fair value is the closing price multiplied by the number of shares. No judgment required on valuation; judgment may be required on whether the market is "active."
PE application: Rarely used. Public comparables you invest in (if any), or warrants on public companies.
Inputs that are observable but not directly quoted — for example, prices for similar assets in active markets, or quoted prices in markets that are not active. Requires judgment about the applicability of the observable input to the specific asset being measured.
PE application: Debt instruments where observable market rates exist; certain senior preferred tranches with interest rate benchmarks.
Inputs developed using the entity's own assumptions about what market participants would use. The least reliable level — but the most commonly used for private equity portfolios. Fair value is derived through DCF models, market multiples applied to private company financial metrics, or recent transaction prices adjusted for time and conditions.
PE application: Nearly all private portfolio company equity investments — the dominant classification for PE fund portfolios.
Level 3 Valuation: The Two Primary Approaches
For private equity portfolio companies — all Level 3 — the standard recognizes three valuation approaches: the income approach, the market approach, and the cost approach. In practice, institutional PE fund marks rely primarily on the first two, used together to triangulate fair value.
Income approach (DCF): Projects the company's future free cash flows and discounts them to present value using a risk-adjusted discount rate (WACC). The DCF is the theoretically rigorous anchor — it captures the company's growth trajectory, margin structure, and capital intensity. Its weakness is sensitivity to terminal growth rate and discount rate assumptions, which are themselves unobservable and require documentation.
Market approach (GPC / Transaction multiples): Applies revenue or EBITDA multiples derived from publicly traded guideline companies or recent comparable transactions to the portfolio company's financial metrics. The market approach grounds the valuation in what buyers are actually paying for similar businesses. Its weakness is comparability — private portfolio companies rarely have perfect public analogs, and the multiple selection and adjustment process requires documented judgment.
Institutional standard requires both approaches to be performed independently, with a reconciliation that explains the weighting assigned to each and why. Relying on a single approach — even if internally consistent — is a common audit deficiency finding.
Calibration: The Entry Point Discipline
ASC 820-10-30-7A requires that when a Level 3 asset is initially acquired, the transaction price is presumed to equal fair value at the acquisition date. For subsequent quarters, the valuation model must be calibrated to the initial transaction — meaning the model should produce a result approximately equal to the transaction price at the date of acquisition before it diverges based on market and company-specific changes.
Calibration is the discipline that links your ongoing quarterly marks back to the original entry point. It answers the auditor's most basic question: "Show me that your model, if run on the acquisition date with the conditions that existed then, would produce the price you paid."
A calibration that does not reconcile to the transaction price signals that either the model's structure is incorrect or that the inputs as selected are inconsistent with what a market participant would have agreed to at acquisition. Both are audit deficiency findings.
In practice, calibration is performed once at acquisition and documented as part of the initial holding workpaper. Subsequent quarters show how each input has evolved from the calibrated starting point and why — creating the period-over-period consistency trail that supports the quarterly mark.
The Quarterly Mark Process: What Institutional Standard Looks Like
Many PE funds perform quarterly valuations on a compressed timeline — the 45-day window between quarter-end and LP capital statement delivery. That constraint makes the quality of the valuation process — not just the conclusion — a risk factor in itself.
The institutional quarterly mark process has five components that must be documented for each holding each quarter:
| Component | What It Documents | Auditor Focus |
|---|---|---|
| Company update memo | Financial performance vs. prior period, key developments, any material events | Whether post-quarter information was improperly incorporated |
| Method consistency rationale | Confirmation that the same methods as prior quarter are applied, or documented reason for change | Consistency — unexplained method changes are a primary inquiry trigger |
| Input update schedule | Prior quarter vs. current quarter for every key input (WACC, multiple, revenue, EBITDA, growth rate) | Directional consistency between company performance and the mark — a deteriorating company with a rising mark requires explanation |
| Sensitivity analysis | How the fair value conclusion changes across key assumption ranges | ASC 820 disclosure requirement for Level 3 — also a reasonableness check on the conclusion |
| Value bridge | Attribution of the period-over-period fair value change to specific drivers (performance, multiple expansion/compression, discount rate, other) | Supports the reasonableness of the mark and the appropriateness of realized/unrealized gain classification |
The Independence Requirement: Who Can Perform the Valuation?
ASC 820 does not explicitly require independent third-party valuations for Level 3 assets. Funds may perform valuations internally. However, institutional investors — particularly LP investors in registered funds, family offices, and pension funds — increasingly require or strongly prefer independent third-party valuations for Level 3 holdings as part of their investment due diligence and ongoing monitoring frameworks.
The regulatory environment has tightened this expectation significantly. SEC guidance in the investment adviser context (Investment Advisers Act Rule 206(4)-7) and AICPA audit guidance for investment funds both emphasize the importance of valuation independence and the documentation of methodology, particularly for Level 3 holdings that represent a material portion of NAV.
For funds with SEC-registered advisers, Form ADV Part 2A requires disclosure of how portfolio investments are valued, who performs the valuation, and what conflicts of interest exist in the process. An internal team that both manages the investment and sets its quarterly mark has an inherent conflict that must be disclosed and, increasingly, mitigated through independent oversight.
ASC 820 Disclosure Requirements: What the Notes Must Contain
The financial statement disclosures required for Level 3 holdings are substantially more extensive than for Level 1 or Level 2. For each Level 3 asset class, the notes to the audited financial statements must include:
- Quantitative information about significant unobservable inputs: For each valuation technique applied, the range and weighted average of each significant unobservable input (e.g., EBITDA multiple: 7.5x–9.5x, weighted average 8.4x; discount rate: 14%–18%, weighted average 16.2%).
- Valuation processes: Description of the valuation techniques and inputs used, including the rationale for any changes from prior periods.
- Sensitivity analysis: A narrative description of the sensitivity of the fair value measurement to changes in the unobservable inputs — specifically whether a significant change in an input would result in a significantly higher or lower fair value.
- Level 3 roll-forward table: A reconciliation of the opening and closing balance for each Level 3 asset class, showing purchases, sales, transfers into/out of Level 3, and total gains/losses (realized and unrealized).
These disclosures are the single most consistent source of auditor inquiries for PE fund annual audits. The quantitative input disclosure — particularly the range and weighted average of multiples and discount rates — is frequently compared against industry benchmarks and prior periods. Outliers trigger questions.
Common ASC 820 Audit Findings for PE Funds
Valuing a portfolio company solely on a multiple of EBITDA, or solely on a DCF, without a secondary approach to triangulate the conclusion. Auditors expect at least two independent approaches for material Level 3 holdings, with a documented rationale for the weighting assigned.
Changing the guideline company set without documentation. A peer group that is reconstituted each quarter — with different companies, different multiples, and no documented rationale — signals cherry-picking to support a desired conclusion rather than a consistent methodology.
Applying a model that, if run as of the acquisition date, would not produce the transaction price. This is the foundational calibration failure — it means the model's structure or inputs are inconsistent with the observable market evidence from the acquisition itself.
Using information that was not available to market participants as of the measurement date — a Q1 valuation that incorporates April financial results, or a year-end mark that reflects a deal that closed in January. ASC 855 governs subsequent events; ASC 820 is strictly point-in-time.
Providing ranges of unobservable inputs that are too wide to be meaningful (e.g., "discount rate: 10%–25%") or sensitivity narratives that are generic rather than specific to the holdings. Auditors increasingly require quantitatively precise input disclosures with holding-specific sensitivity commentary.
ILPA Principles and LP Reporting Standards
Beyond the GAAP requirements of ASC 820, institutional limited partners increasingly benchmark fund reporting against the Institutional Limited Partners Association (ILPA) Principles, now in their third edition. While ILPA standards are voluntary, they represent the de facto expectations of sophisticated institutional LPs — pension funds, endowments, sovereign wealth funds — and funds that do not meet them face LP inquiries at capital calls and potential exclusion from re-ups.
ILPA Principles 3.0 addresses portfolio valuation in Principle 2 (Transparency). The key expectations relevant to ASC 820:
- Quarterly NAV statements with holding-level fair value by investment
- Annual audited financial statements with full Level 3 disclosures within 120 days of fiscal year-end
- Disclosure of the valuation policy, valuation committee governance, and use of third-party independent valuers
- Consistent methodology period-over-period, with disclosure of any methodology changes
For funds seeking institutional LP relationships — pension capital, endowment commitments, sovereign wealth — ILPA-aligned reporting is effectively a prerequisite, not a differentiator.
Building an ASC 820 Process That Scales
The most common failure mode in PE fund valuation is a process that works for a 3–5 company portfolio but breaks under audit pressure when the fund has 15–20 holdings, each with multiple tranches, different acquisition dates, and different valuation methodologies. Scale requires a standardized valuation architecture — not a collection of bespoke spreadsheets assembled under deadline pressure.
A scalable ASC 820 process has four characteristics that make it defensible at any portfolio size:
- Consistent methodology templates: Each holding category uses a standardized approach — early-stage portfolio companies on one template, revenue-stage on another, EBITDA-positive on a third. Consistency is documented, and departures from the template require explicit rationale.
- Input version control: Every quarterly input — the EBITDA multiple selected, the WACC applied, the revenue forecast used — is versioned and timestamped. If an auditor asks why the discount rate moved from 14% to 16% between Q2 and Q3, the answer is documented in the input register, not reconstructed from memory.
- Independent review at each quarter: A review layer — whether internal (investment committee) or external (independent valuation firm) — reviews each holding's mark before the quarter closes. The review is documented, not just the conclusion.
- Pre-built audit disclosure drafts: The quantitative input table required for ASC 820 Note disclosure is generated from the valuation workpapers directly — not drafted separately during audit preparation. The disclosure is an output of the valuation process, not a separate effort.
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