Glossary term

Fair Market Value (FMV)

Fair Market Value is the current price of one share of your company's stock. It is the amount you would pay to buy or sell a share on the open market today.

Plain-English definitionEducational, not tax advice

What it means

Fair Market Value (FMV) is the price of a stock at a specific time. If your company is public, this is usually the closing price on the stock market at the end of the day.

If your company is private, they use a process called a 409A Valuation. This is an independent appraisal that sets the official price for a share. This price is vital for tax reporting and keeping things fair for everyone.

A simple example

Imagine an employee named Sam works at a private company. The company says the FMV of one share is $10. Sam decides to buy 100 shares using their options. Sam pays the company $1000 total (100 shares multiplied by $10 each). If Sam later sells those shares for $15 each, the FMV has changed, and Sam has made a profit.

Why it matters to you

  • Your taxes are based on this price when you get your shares or use your options.
  • It helps you see the current value of your equity, which is your ownership stake in the company.
  • Using the wrong price can lead to mistakes on your tax return.

Common mistakes to avoid

  • Assuming the FMV stays the same forever; it changes daily for public companies.
  • Forgetting that the price used for taxes might be different from the price you see on your dashboard.
  • Not checking your specific company plan documents to see exactly how they define the price.

Words used on this page

  • Equity: The value of the shares you own in your company.
  • Options: The right to buy company shares at a set price later.
  • 409A Valuation: An official, expert-led estimate of what a private company share is worth.
  • Vesting: The process of earning your right to own or use your equity over time.

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All glossary terms

Estimates only. Not tax, legal, or investment advice. See our methodology

Estimates only. Not tax, legal, or investment advice. See our methodology