Most founders treat a 409A valuation as a black box: hand over some documents, wait a week or two, receive a PDF with a number on it. That works fine when the process runs smoothly — but when it stalls, or when an auditor questions the result, not knowing what happens inside the box leaves you guessing. The 409A process is not mysterious. It is a defined seven-step engagement, and understanding it helps you prepare well, brief your appraiser, and recognise a thorough job from a thin one.
This guide walks the full 409A valuation process from kickoff to a defensible report. For how the work varies by company stage, pair it with 409A valuation by funding stage.
Step 1 — Scoping and engagement
The process starts with the appraiser understanding your situation: your stage, when you last raised, what kind of round it was, and how complex your cap table is. This determines the scope, the likely method, the fee, and the timeline. A good appraiser scopes honestly here — including telling you if your cap table needs cleanup before the valuation can begin. You sign an engagement letter, and the valuation date is fixed (usually the date of the most recent material event or the current date).
Step 2 — Information gathering
The appraiser then collects everything needed to value the company. Expect to provide:
- A current, accurate cap table — every share class, option grants, SAFEs and notes, warrants, with their economic terms. This is the single most important input.
- Financing documents — term sheets and closing documents from your most recent priced round, plus SAFE or note agreements.
- Financial statements — historical financials and, where relevant, a forward forecast or model.
- Corporate documents — your articles or certificate of incorporation, which set out the rights of each preferred class.
- Context — a management conversation about the business, the market, recent milestones, and what is coming next.
The quality of this step drives everything downstream. A clean cap table and organised documents make the rest fast; a messy cap table stalls the engagement before it really starts — one of several reasons cap-table hygiene matters, covered in our cap table management guide.
Step 3 — Enterprise value
With the inputs in hand, the appraiser establishes the total equity value of the company — the size of the whole pie — before any allocation to specific share classes. For a venture-backed company with a recent priced round, this is anchored on the round itself: the price investors paid for preferred stock is direct, current evidence of value. For companies without a recent round, the appraiser builds enterprise value from the methods discussed in the next step.
Step 4 — Method selection
The appraiser selects and applies one or more valuation approaches, choosing on the evidence available:
- Market approach. Value the company against real market data — most powerfully a backsolve from your recent priced round, or a comparison to similar public or acquired companies. The backsolve is the standard for venture-backed startups.
- Income approach. A discounted cash flow (DCF): project future cash flows and discount them to present value. This needs a credible forecast, so it suits companies with real revenue and a defensible model.
- Asset approach. Value the company at the net value of its assets — most relevant to very early, pre-revenue companies.
A thorough report explains why a method was chosen and, at later stages, may reconcile several. Documented method selection is part of what makes a valuation defensible — it is the difference between a thin automated number and a report that holds up under scrutiny.
Step 5 — Allocating value to common stock
This is the analytical heart of a 409A, and the step founders most often misunderstand. Total equity value is not the value of your common stock. Preferred shareholders hold liquidation preferences, participation rights and other economics that common stock does not — so common stock is worth meaningfully less per share than preferred.
The appraiser allocates total equity value across the share classes, typically using an option-pricing model (OPM), which treats each class as a series of call options on the company's value and prices them accordingly. The OPM output is the fair market value of a single share of common stock. The appraiser then applies a discount for lack of marketability (DLOM) — common stock in a private company cannot be freely sold, and that illiquidity reduces its value. The result is your common stock FMV: the minimum legal strike price for the options you grant.
Step 6 — The report
The appraiser documents the entire analysis in a formal valuation report — the company background, the inputs relied on, the methods chosen and why, the OPM and DLOM workings, and the concluded common stock FMV. This document is the deliverable. It is what your auditor tests and what investors and acquirers review in diligence. A substantial, well-reasoned report is the asset; the headline number on its own is not.
Step 7 — Adoption and the safe harbor
Finally, your board formally adopts the valuation — usually by board resolution — and sets the option strike price at or above the concluded FMV. Because the valuation was performed by a qualified independent appraiser, it carries the safe harbor presumption of reasonableness: it is presumed correct, and if the IRS ever disputes it, the burden falls on them to prove it unreasonable. (Other safe harbors exist — an illiquid-startup route and a binding-formula route — but the independent appraisal is the standard and the most defensible.) That presumption is the entire point of the exercise: it protects your employees from the punitive Section 409A tax penalties that follow from a below-FMV strike price.
Timeline and how to speed it up
A standard 409A engagement runs one to two weeks from receiving complete information to a final report. Rush turnarounds — 48 to 72 hours — are usually available for a premium when a board meeting or grant date forces it.
The fastest way to compress the timeline is on your side, not the appraiser's:
- Have a clean, current cap table ready before kickoff. This is the number-one cause of delay.
- Gather financing and corporate documents in advance — closing docs, SAFE agreements, your certificate of incorporation.
- Be responsive on management questions. A prompt 30-minute call beats a week of email tag.
- Plan ahead of grant dates. Start two to three weeks before you need to grant, so you are not paying a rush premium for your own late planning.
For what all of this costs, see 409A valuation cost in 2026; for when you need to start the process at all, when do you need a 409A valuation.
Run the process with someone who has done it before
A 409A done well is straightforward; done badly it stalls, costs more, and leaves you with a report that wobbles under audit. BlackpeakCFO delivers a productised 409A valuation at a flat $1,995–$2,995 — clean process, documented methods, defensible report, realistic timeline.
Send your details and I will walk you through exactly what your valuation will involve.