409A Valuation Guide
Complete guide to 409A valuations for private companies
What is a 409A valuation?
A 409A valuation determines the fair market value (FMV) of private company common stock for tax and equity-compensation purposes under IRS Section 409A. It protects employees and the company from tax penalties by establishing a defensible strike price for stock option grants.
The 409A valuation is required whenever a private company issues stock options or other deferred compensation. Without a proper 409A, employees could face significant tax penalties, and the company could face compliance issues.
Who needs a 409A and when?
Startups & Private Companies
Issuing stock options to employees, advisors, or contractors.
Major Events
Completing a new option grant, major financing, or material change in operations.
Founders & CFOs
Preparing for fundraising or M&A transactions.
Investors & Counsel
Requesting an independent 409A for diligence or transaction support.
Timing triggers:
- New option pools or fresh grants (quarterly or as needed)
- Post-financing (required to reflect new preferred stock pricing)
- Significant business events (M&A, reorganization, material revenue changes)
409A Valuation Methodologies
We apply standard, defensible valuation approaches with clear rationale — often blending methods where appropriate:
Market (Guideline Public/Private Comps & Multiples)
Use for later-stage or revenue-generating companies. We pull private comps from QuantTerminal™ and adjust for size, growth, and liquidity.
Income (DCF / Discounted Cash Flow)
Forward-looking cash flows discounted for early-stage or predictable businesses.
Option-pricing (Modified Black-Scholes / Option Pricing Model)
Used to derive common stock value from preferred price, especially for VC-backed rounds.
Hybrid Approaches
Often combine OPM + market multiples with scenario weighting for robustness. Each report explicitly states which method(s) were used, why, and how weights were chosen.
409A Delivery Options & Timelines
Express 409A — 48-72 hours
Quick, defensible opinion for time-sensitive grants. Requires complete cap table + latest financing terms + recent financials.
- Short methodology & valuation conclusion
- Model file and data appendices
Standard 409A — 7-14 days
Full analysis, deeper comps search, sensitivity analysis, and a multi-scenario valuation annex. Suitable for pre-fundraise validation or new financing.
- Comprehensive analysis & comps
- Sensitivity & scenario analysis
What's included in a 409A report
Every QuantPillar 409A includes:
Common 409A pitfalls — and how to avoid them
Using stale preferred price
Always reconcile to most recent financing terms and documented preferences
Insufficient documentation
Missing forecasts, incomplete cap tables, or unsigned term sheets weaken defensibility
Ignoring market context
Failing to use comparables or market signals produces unsupported conclusions
Over-reliance on a single method
Best practice: document why chosen method(s) are most appropriate and include sensitivity analysis
Compliance & audit checklist
- Engagement letter signed and scope defined
- Conflict check & independence confirmation
- Data intake & chain-of-custody recorded
- Model versioning & audit log
- Report includes limitation of liability and reliance clause
- Final opinion signed by qualified valuation expert
Frequently Asked Questions
Ready to get your 409A valuation?
Get an audit-ready 409A report that counsel and investors accept. Choose Express (48-72h) or Standard (7-14d) delivery.