Two Different Tax Mechanisms for Two Different Equity Instruments
The 409A valuation and the 83(b) election are frequently confused because both involve startup equity and both reference fair market value. However, they are completely different legal mechanisms that apply to different types of equity instruments:
| Feature | 409A Valuation | 83(b) Election |
|---|---|---|
| Applies to | Stock options (ISOs and NQSOs) | Restricted stock grants |
| Purpose | Set minimum option strike price | Choose when to be taxed |
| Who needs it | Company (before granting options) | Individual recipient |
| IRS filing | Report in appraiser's written report | Written election to IRS within 30 days |
| Deadline | Must be current at time of grant | Strictly 30 days from grant — no exceptions |
| Governed by | IRC Section 409A | IRC Section 83 |
Understanding the 83(b) Election
When a founder or employee receives restricted stock (actual shares, not options) that is subject to a vesting schedule, IRC Section 83 says the recipient is taxed on the value of the stock as it vests — not when it is granted. This means as the company grows and the stock becomes more valuable, the recipient pays ordinary income tax on the appreciated value each year it vests.
The 83(b) election is an opt-out: by filing with the IRS within 30 days of receiving the restricted stock, the recipient elects to be taxed now on the current (low) FMV, rather than on the higher value when shares vest. Future appreciation is then taxed as capital gains at exit, not ordinary income.
Why the 30-Day Deadline Is Absolute
The IRS provides zero flexibility on the 83(b) deadline. Missing it by even one day means the election is permanently unavailable. There are no extensions, no excused absences, no ability to fix it retroactively. The practical consequence of missing the deadline can be hundreds of thousands or millions of dollars in additional ordinary income tax as shares vest at a higher valuation.
Best practice: prepare the 83(b) election on the same day you receive restricted stock and mail it via certified mail to the IRS within 48 hours. Keep a copy for your records and confirm receipt.
How the 409A FMV Affects an 83(b) Election
For restricted stock issued to founders at or near incorporation (before any funding), the 409A FMV is typically extremely low — sometimes $0.0001 to $0.01 per share. This is ideal for the 83(b) election because the tax basis is set at this minimal value:
- Founder receives 1,000,000 restricted shares at $0.0001/share (FMV at founding)
- 83(b) election: pays income tax on $100 total ($0.0001 × 1,000,000)
- At Series A, shares are worth $1.00/share — the entire $999,900 of appreciation is capital gain, not ordinary income
- At IPO or M&A exit, if held >5 years and QSBS applies, potentially $0 federal capital gains tax
Without the 83(b) election, the founder would owe ordinary income tax on the value of shares as they vest over 4 years — at much higher valuations.
Can You Use Both 409A and 83(b)?
Yes, but they apply to different instruments and are not mutually exclusive:
- Early employee receives restricted stock: File 83(b) election within 30 days. No 409A required for restricted stock itself (though a 409A establishes the FMV used in the 83(b) calculation).
- Employee receives stock options (ISOs/NQSOs): Company needs a valid 409A to set the strike price. No 83(b) election is typically available for options prior to exercise.
- Employee early-exercises options into restricted stock: The 83(b) election IS available after early exercise — and highly beneficial when done early at a low FMV.