What is an 83(b) election? A Section 83(b) election is a tax filing that tells the IRS to tax your restricted stock or early-exercised options now, at grant, rather than later as the shares vest. This strategy is highly effective for startup equity with low initial value, as it starts your capital gains holding clock and converts future appreciation into lower-taxed capital gains. You must file the election within a strict 30-day deadline from your grant date.
How your choice changes your tax liability
When you are awarded restricted stock that vests over time, the tax code must decide when to tax that compensation. By default, under Section 83(a), the IRS taxes your shares on their vesting dates.
- Without an 83(b) election (default): you owe ordinary income tax on the fair market value of your shares on each vesting date. If the stock price rises significantly, you can face a substantial ordinary income tax bill on illiquid shares you have not yet sold.
- With an 83(b) election: you choose to be taxed on the value of the shares today. If you pay full market price on day one, your taxable spread is $0, so you owe zero tax today. All future growth is treated as capital gains, untaxed until you sell.
Tax calculations with and without the election
Consider a startup founder who receives 1,000,000 shares of restricted stock at $0.001 per share ($1,000 total value), vesting over four years:
| Tax event | With an 83(b) election | Without an 83(b) election |
|---|---|---|
| Tax at grant | Ordinary tax on $1,000 value (minimal) | No tax today |
| Tax at vesting | $0 (no tax as shares vest) | Ordinary tax (up to 37%) on the market value of the shares on each vesting date |
| Tax at sale (at $5/share) | Long-term capital gains tax on the $5 million gain | Capital gains tax only on growth after the vesting dates |
| The result | Minimal tax today, lower capital gains on exit | Significant, recurring ordinary income bills as the company grows |
The early-exercise scenario
The 83(b) election is also valuable when early-exercising stock options. Some plans let you exercise before your options fully vest, generating unvested restricted stock.
If you early-exercise 10,000 Non-Qualified Stock Options (NSOs) at a $1 strike when the fair market value is also $1:
- File an 83(b) within 30 days: your taxable spread at exercise is $0, so you report no income now, your holding period starts at exercise, and later appreciation is capital gain.
- Skip the election: as the shares vest, the spread between the then-current value and your $1 strike is ordinary income at each vesting date, creating the same disadvantage as above.
For Incentive Stock Options (ISOs), filing an 83(b) election locks in the stock’s value for the Alternative Minimum Tax (AMT) calculation on your exercise date, preventing future AMT surprises as the shares vest.
How to file an 83(b) election, step by step
Complete these steps within 30 days of your stock grant or early-exercise date. The IRS does not offer extensions for any reason.
- Draft your election statement. Prepare a written document with your name, address, tax year, a description of the property, the date of transfer, the fair market value of the stock, and the amount paid. Refer to Treasury Regulation Section 1.83-2 for the exact required language.
- Mail it to the IRS. Send the signed original by certified mail with return receipt requested to the IRS office where you file your annual return.
- Copy your company. Provide a copy of the completed election to your employer for their corporate records.
Keep your stamped certified-mail receipt. You are no longer required to attach a copy to your annual return, but you must keep physical proof of timely mailing to protect against a potential IRS audit.
This is closely tied to your ISO vs NSO decisions and, for founders, the QSBS exemption, since exercising early can start both clocks sooner.
