A tax filing that lets you pay taxes on stock at its current value rather than when it vests. Must be filed with the IRS within 30 days of receiving restricted stock. Missing this deadline can result in significant unexpected tax liability.
83(b) election
/eɪti θriː biː ɪˈlekʃən/ noun — A tax election made under Section 83(b) of the Internal Revenue Code that causes a recipient of restricted property to recognize income at the time of grant rather than as the property vests. Particularly valuable for founders receiving restricted stock when the company's fair market value is near zero, locking in a minimal tax basis before future appreciation.
Why it matters
Filing an 83(b) election early can save you thousands — sometimes hundreds of thousands — in taxes. If your company grows significantly, you'd otherwise owe taxes on the much higher value as your shares vest. For founders receiving restricted stock at formation, this is one of the most important tax moves you can make.
The mechanism is straightforward but the consequences of inaction are severe. Without the election, every single vesting event — every month your shares unlock — creates a taxable income event based on the fair market value at that time. If the company has grown, you could owe ordinary income tax rates (up to 37% federally) on shares you haven't sold and can't easily convert to cash. This is called phantom income, and it has blindsided countless founders and early employees.
The 83(b) election also starts your capital gains holding period from day one. If you file it when your shares are worth pennies and the company is later acquired, any gain above that initial value may qualify for long-term capital gains treatment (typically 15-20%), rather than ordinary income rates.
How it works
When you receive restricted stock, you have 30 days to file Form 83(b) with the IRS. This tells them you want to be taxed now, at the stock's current (presumably low) value, instead of later when it vests at a potentially much higher value. You pay a small tax bill now to avoid a massive one later.
The filing process involves drafting the election letter (the IRS has no official form — you write it yourself using your attorney's template or a standard form), mailing it to the IRS service center via certified mail within the 30-day window, retaining a copy for your personal records, and delivering a copy to your employer. You also attach a copy to the tax return for the year of the grant.
The 30-day clock starts on the date you received the property — the grant date — not when you signed paperwork or were told about it. There are no extensions and no exceptions. Many startup attorneys now send automated reminders and help founders file within days of incorporation precisely because missing the window is irreversible.
| Scenario | With 83(b) election | Without 83(b) election |
|---|---|---|
| Tax timing | Pay taxes at grant (low value) | Pay taxes at each vest (growing value) |
| Tax rate on gains | Long-term capital gains (if held 1+ year) | Ordinary income on each vesting event |
| Phantom income risk | None | High — owe taxes without selling shares |
| If company fails | Small upfront tax lost (no refund) | No upfront tax paid — but also no gain |
History and origin
Section 83 was added to the Internal Revenue Code in 1969 as part of the Tax Reform Act. Prior to that, the tax treatment of property received for services was inconsistent and often litigated. Congress introduced Section 83 to establish a clear rule: property received for services is taxed as ordinary income when it is no longer subject to a substantial risk of forfeiture — i.e., when it vests.
Subsection (b) — the election — was included from the beginning as a safety valve for taxpayers who preferred certainty. By electing to be taxed immediately, they could lock in their basis and avoid the uncertainty of future valuation-based tax events. In 1969, this was primarily relevant to executive compensation arrangements, not startup equity.
The 83(b) election became a critical startup tool in the 1990s and 2000s as Silicon Valley compensation norms spread nationwide. As restricted stock grants became standard for founders and early employees, and as companies began achieving significant appreciation during vesting periods, the election transformed from an obscure tax provision into one of the most important documents any startup founder signs. Today, most startup attorneys file it automatically within days of incorporation.
Frequently asked questions
What is an 83(b) election?
An 83(b) election is a tax filing that lets you pay income tax on restricted stock at the time of grant rather than when it vests. By filing the election within 30 days of receiving the stock, you lock in today's (presumably low) value as your tax basis. If the company grows significantly, you avoid paying ordinary income tax on the appreciated value as shares vest.
What is the 30-day deadline for an 83(b) election?
The IRS requires the 83(b) election to be mailed within 30 days of the date you received the restricted stock — not the date you exercised options, not the date you signed paperwork. The postmark must be within those 30 days. There are no extensions and no exceptions. Missing the window is one of the most costly mistakes founders make.
Who should file an 83(b) election?
Any founder or early employee receiving restricted stock that is subject to a vesting schedule should seriously consider filing an 83(b) election. The election is most valuable when the stock's current fair market value is very low (as it typically is at founding) and you expect the company to grow substantially.
What happens if you don't file an 83(b) election?
Without an 83(b) election, you are taxed on the fair market value of shares as they vest. If the company's value grows significantly, each vesting event creates a taxable income event at potentially high ordinary income rates — even if you haven't sold any shares and have no cash to pay the tax bill. This is sometimes called the "phantom income" problem.
Does an 83(b) election apply to stock options?
An 83(b) election applies to restricted stock (actual shares subject to vesting or forfeiture), not to stock options themselves. However, when you exercise an early-exercise stock option and receive restricted shares, you can file an 83(b) election on those shares. Early exercise combined with an 83(b) election is a common strategy for startup employees who want to start their capital gains holding period as early as possible.
What is the downside of filing an 83(b) election?
The main risk is that you pay taxes upfront on shares that may never be worth anything. If the company fails or you leave before vesting, you do not get a refund of the taxes paid. For most founders receiving stock at a nominal value near zero, this risk is small. For employees exercising at a higher strike price, the calculation is more nuanced.
How do you actually file an 83(b) election?
You complete a written election form (the IRS does not have an official form — you draft it yourself or use a template from your attorney), mail one copy to the IRS service center for your area via certified mail within 30 days of the grant date, keep a copy for your records, provide a copy to your employer, and attach a copy to your tax return for the year of the grant. See our full guide: 83(b) election explained.
Learn more
- 83(b) election explained: the filing every founder must know
- Vesting explained: cliffs, acceleration, and the schedule that protects everyone
- Founder agreements: what to include
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