A 409A valuation is an independent appraisal of a private company's common stock fair market value, performed by a qualified independent appraiser. It is required by IRC Section 409A before a private company can grant stock options to employees at a strike price equal to fair market value. Without a defensible 409A, options issued at below-FMV strike prices create immediate tax liability for employees — not the company.
What IRC Section 409A Requires
Section 409A of the Internal Revenue Code, enacted as part of the American Jobs Creation Act of 2004, governs nonqualified deferred compensation. Stock options are exempt from the onerous Section 409A rules — but only if they are granted at a strike price equal to or above the fair market value of the underlying stock on the grant date.
For public companies, FMV is the stock's market price — straightforward. For private companies, there is no market price. The 409A valuation provides the IRS-defensible determination of FMV, using one or more valuation approaches (typically a combination of income approach, market approach, and option-pricing model for allocating enterprise value to common stock).
What Happens If You Grant Options Without a 409A
If options are granted without a current 409A valuation and the IRS later determines that the strike price was below FMV, employees face: (1) immediate ordinary income tax on the "discount" in the year of vesting, plus (2) a 20% additional excise tax under Section 409A, plus (3) interest. These penalties fall on the employees, not the company. The company may also face withholding tax liability. Granting options without a current 409A is one of the highest-consequence equity mistakes a startup can make.
The 12-Month Safe Harbor
A 409A valuation performed by a qualified independent appraiser provides a presumption of reasonableness — meaning the IRS must prove the valuation was grossly unreasonable to challenge it. This safe harbor is valid for 12 months from the effective date, or until a "material event" occurs that could affect the company's value, whichever comes first.
Common triggers for a fresh 409A before the 12-month period expires:
- New financing round: Any priced equity round (Series A, B, C) requires a fresh 409A before subsequent option grants
- SAFE conversion at a priced round: The priced round event triggers re-valuation
- Significant revenue milestone: A material change in the company's financial trajectory
- Acquisition offer: A term sheet for an acquisition of the company
- IPO preparation: Initiating the IPO process — the 409A must be current before granting any pre-IPO equity awards
The Connection to ASC 718 Stock-Based Compensation Expense
The 409A valuation also determines the grant-date fair value used for ASC 718 stock-based compensation expense in the financial statements. When the company's auditors determine the stock-based compensation expense to include in the income statement, they base it on the Black-Scholes or lattice model using the 409A valuation as the underlying stock price. A low 409A valuation means lower stock-based compensation expense; a high one means higher expense.
This creates a natural tension: founders want a low 409A to set low option strike prices (employee-friendly), but a low 409A means lower stock-based compensation in the financial statements — which will be compared to the IPO price in the SEC cheap stock review.
The Pre-IPO Cheap Stock Problem
The SEC compares the strike prices of all stock option grants in the 12–18 months before the S-1 filing to the anticipated IPO price. If the gap between grant prices and IPO price is large (which it often is for fast-growing companies), the SEC may comment that options were granted at below-FMV prices — requiring additional stock-based compensation expense recognition and potentially a restatement of the historical financial statements.
This is called the "cheap stock" problem, and it is one of the most common sources of SEC comment letters on S-1 filings. The resolution typically involves:
- Obtaining retroactive valuations (contemporaneous explanations of the valuation approach at each grant date)
- Documenting why the difference between the grant price and IPO price reflects genuine value creation rather than mispriced options
- In some cases, recording additional stock-based compensation expense in the S-1 financial statements
409A Accounting Is a Pre-IPO Accounting Advisory Workstream
Accounting advisory firms review the 409A history before the S-1 is drafted — identifying gaps, inconsistencies with the priced round history, and potential cheap stock exposure. Catching these issues before the SEC does saves significant S-1 timeline risk.
409A Valuation Methodology
409A valuations use one of three primary approaches, or a combination:
- Market approach (OPM / PWERM): The Option Pricing Model (OPM) allocates the company's total equity value to each share class based on their respective rights in different outcome scenarios. The Probability-Weighted Expected Return Method (PWERM) explicitly models multiple scenarios (IPO, acquisition, continued operations, dissolution) and assigns probabilities to each. PWERM is generally preferred as the company approaches an IPO because the IPO path becomes a more deterministic outcome.
- Income approach (DCF): Discounts projected future cash flows to present value. Rarely used as the primary method for pre-revenue or high-growth companies because the assumptions are highly subjective.
- Asset approach: Used only for early-stage companies where the primary value is intellectual property or other identifiable assets.
The appraiser applies a DLOM (Discount for Lack of Marketability) to reflect the illiquidity of private company common stock relative to publicly traded shares. As the company approaches an IPO, the DLOM shrinks — from 30–40% in early stages to 5–15% in the 6–12 months before the anticipated IPO.
The Cheap Stock Problem
The SEC examines all option grants made in the 12–18 months before the S-1 filing to assess whether they were priced at fair market value. If the IPO price implies that the 409A valuations used to price those grants were too low — that options were issued "in the money" at grant — the company may face a "cheap stock" comment from the SEC requiring additional compensation expense recognition and earnings restatement.
Red flags that increase cheap stock scrutiny:
- A large gap between the last 409A valuation and the IPO price — especially if the gap exceeds 50% and there is no obvious change in business performance between the 409A date and the IPO filing
- Option grants made shortly after a 409A valuation that produced a low common stock value, followed by a preferred stock financing at a significantly higher per-share equivalent valuation
- Infrequent 409A updates — companies that obtained valuations only annually rather than after each significant event are more exposed to cheap stock risk
Best practice: obtain a 409A valuation within 30–60 days of every material event (preferred stock financing, significant revenue milestone, acquisition) and no less frequently than quarterly in the 18 months before a planned IPO.
Real-World 409A Valuation Cases
The 2022 tech market correction produced the most dramatic 409A write-down cycle in a generation — illustrating both the mechanics of how 409A adjusts to market conditions and the practical consequences for employees and companies.
Instacart — 409A dropped from $38 to $13.25 (2022 write-down): Instacart's 409A valuation journey is the most publicly discussed write-down of the 2022 correction. The company had raised its Series I funding round in March 2021 at a valuation implying a 409A common stock fair market value of approximately $38 per share. As public market comparables (DoorDash, Uber Eats, delivery platforms generally) declined 60–80% from their 2021 peaks through 2022, Instacart's board was required to obtain updated 409A appraisals reflecting the changed market environment. The 409A dropped to approximately $13.25 per share — a 65% decline from the peak. For employees who had received options at $38 strike prices during the peak period, the write-down meant their options were deeply "out of the money" — they would only have value if the company's valuation recovered significantly above $38 before the options expired. Instacart's September 2023 IPO at $30 per share partially (but not fully) addressed the underwater option problem.
Stripe — 409A from $95 to $29 (2023), then recovery to $70 (2024): Stripe's 409A valuation journey illustrates both the depth of the 2022 correction and the speed of potential recovery. The company's internal valuation peaked at approximately $95 billion in 2021 — implying a per-share value for employees in the $60–$95 range depending on their specific series of equity. In 2023, Stripe cut its internal 409A to approximately $50 billion, implying per-share values around $29. The write-down created significant morale challenges for employees who had joined during the peak and received options at high strike prices. By 2024, Stripe's 409A had recovered to approximately $70 per share as the company prepared for a public listing, partially restoring the value of in-the-money options. Stripe's cycle from $95 to $29 to $70 illustrates how dramatically 409A values can move over a 2–3 year period for high-growth private companies, and why employees should not anchor their financial planning to any single point-in-time 409A value.
Klarna — 409A dropped 85% peak to trough (2022): Swedish BNPL company Klarna completed a down round in July 2022 at a $6.7 billion valuation — an 85% decline from its July 2021 valuation of $45.6 billion. The down round triggered an immediate 409A reappraisal. For employees who had received equity grants when Klarna was valued at $45 billion, the write-down was devastating — options and RSUs that had appeared to be worth millions were now worth a fraction of that amount. Klarna subsequently went public on the New York Stock Exchange in July 2025 at approximately $15 billion, recovering meaningfully from the 2022 trough but still significantly below the 2021 peak. The Klarna cycle illustrates the specific risk faced by employees of highly valued private companies: equity compensation that appears to be extraordinarily valuable at grant can be severely impaired by market conditions that the employee has no control over.
409A Valuations — Real-World Write-Downs and SEC Cases
Instacart — 409A Dropped from $38 to $13.25 (2022)
Instacart's March 2021 Series I funding round was conducted at a $38 per share implied price, valuing the company at $39 billion. By early 2022, as public market SaaS and technology multiples compressed sharply in response to rising interest rates, Instacart's board approved a 409A valuation of $13.25 per share — a 65% reduction from the prior round price. The write-down was significant for employee morale and retention: thousands of employees held options with strike prices set at the $38 peak valuation, which were now deeply out of the money at the $13.25 common stock value. Instacart subsequently conducted an option repricing program to reset strike prices to the current 409A value, which required a specific accounting treatment under ASC 718 (a modification to existing awards, requiring recognition of any incremental fair value). The sequence — Series I at $39B, 409A at $13.25/share, IPO at $30/share — illustrated both the unreliability of private market valuations and the importance of frequent 409A updates during periods of public market volatility.
Stripe — 409A Cut from $95 to $29 Per Share (2023)
Stripe's internal common stock valuation declined from an implied $95 per share in its 2021 funding round to approximately $29 per share in its 2022–2023 409A analysis — a 70% reduction. The decline tracked the broader collapse in fintech valuations during the interest rate increase cycle. For Stripe employees, the write-down was particularly painful because many had joined during the 2021 peak and been granted options at strike prices in the $60–$95 range, which were deeply underwater when the 409A fell to $29. Stripe subsequently raised a $6.5 billion tender offer in 2023 at $50 per share — above the 409A value but well below the 2021 peak — providing partial liquidity to employees and early investors while avoiding a full IPO process. The Stripe case demonstrates the tension between 409A valuations (determined by fair market value standards) and tender offer prices (determined by negotiation and investor appetite), which can diverge significantly.
DocuSign — Cheap Stock SEC Comments on Pre-IPO Options
DocuSign's 2018 S-1 received SEC comments questioning the 409A valuations used to set strike prices on options granted in the 12 months preceding the IPO filing. The SEC's comment letter noted that the gap between the most recent 409A common stock value and the expected IPO price was large, and asked the company to explain why the 409A valuations were appropriate given the company's operating performance trends during the period. DocuSign's accounting team responded with a detailed analysis explaining the business developments, investor conversations, and market conditions at each grant date that justified the 409A valuations — and documenting the specific qualitative and quantitative factors that caused the common stock value to increase in the period approaching the IPO. The SEC accepted DocuSign's response after one additional comment round. The case is frequently cited in IPO readiness discussions as an example of how the cheap stock analysis should be documented: contemporaneously, with specificity, and with clear linkage between business milestones and valuation inflections.
Primary Sources
Cheap Stock Considerations in IPO Registration Statements
The SEC staff's guidance on how they evaluate stock-based compensation expense in S-1 filings — the authoritative source for understanding cheap stock review expectations.
Section 409A Regulations
The IRS's full Section 409A regulations — the authoritative legal source for the valuation and compliance requirements.
Common 409A Valuation Methods
A qualified independent appraiser uses one or more of three approaches to determine the enterprise value, which is then allocated to common stock using an option pricing model:
- Income approach (DCF): Projects the company's future cash flows and discounts them to present value using a risk-adjusted discount rate. Most useful for companies with consistent, predictable revenue. Requires forecasting ability that many early-stage companies lack.
- Market approach — guideline public companies: Applies valuation multiples from comparable public companies (EV/Revenue, EV/EBITDA) to the subject company's financials. Used for companies at sufficient scale to have relevant comparables.
- Market approach — recent transactions: Uses recent financing rounds (SAFEs, convertible notes, priced rounds) as primary evidence of value. For early-stage companies, the most recent round is often the strongest indicator of FMV — but the 409A appraiser must evaluate whether the round was at arm's length and whether the preferred stock terms (liquidation preferences, anti-dilution) create a meaningful discount to common stock value.
Common Stock Discount — The Most Consequential Calculation
A critical but frequently misunderstood aspect of the 409A: the appraiser values the common stock, not the company. The company's enterprise value is first determined using the methods above, then allocated to the cap table using an option pricing model (typically the Black-Scholes-Merton model or a more complex Monte Carlo simulation).
Because preferred stock has superior rights (liquidation preferences, anti-dilution provisions, dividends), common stock is worth less than a pro-rata share of the enterprise value. The discount from enterprise value to common stock FMV varies with company stage and preferred stock terms:
409A Valuation Providers
Two types of providers perform 409A valuations: independent valuation firms and internal-to-cap-table-platform tools. The key distinction is who can defend the methodology if the IRS or SEC scrutinizes it:
- Independent valuation firms (Kroll, Duff & Phelps, Stout, Houlihan Lokey, boutique firms) produce detailed reports signed by credentialed appraisers (ASA, ABV). These reports carry the presumption of reasonableness that provides the IRS safe harbor. Costs range from $5,000 for very early-stage companies to $25,000+ for complex pre-IPO situations.
- Platform-integrated 409A tools (Carta's built-in 409A, Pulley's valuation service) offer lower cost and integrated workflows. Many of these use independent appraisers behind the scenes — confirm whether the report is signed by an ASA or ABV-credentialed appraiser and will hold up to IRS scrutiny.
- Audit requirement: The PCAOB auditor will review all 409A valuations for grants made in the financial statement periods being audited. If the auditor disagrees with the methodology or conclusions, the company may need to obtain a corrected 409A and record additional stock-based compensation expense. Using a well-credentialed independent appraiser reduces this risk significantly.
Pre-IPO 409A Review — Catch Issues Before the SEC Does
Accounting advisory firms review the 409A history before S-1 drafting begins. Issues found early can be resolved; issues found during SEC review delay the timeline.