Lock in a low basis
No refund if forfeited
A one-time filing with lasting tax consequences
How RSA taxation normally works
Without the 83(b) election, RSAs are taxed as ordinary income when they vest, not when they are granted. At vesting, the FMV of the stock is considered compensation and reported on Form W-2 — subject to federal income tax, state tax (if applicable), and payroll taxes such as Social Security and Medicare.
If the value of the stock increases significantly between the grant and vesting dates, this can result in a much higher tax bill. After vesting, any additional gain from selling the stock is subject to capital gains tax, based on how long the shares are held after vesting.
How the 83(b) election changes the tax timing
Taxed at vesting
- Ordinary income on FMV at vest
- Full payroll and federal/state income tax
- Capital gains clock starts at vest
- Bracket bump risk if stock has appreciated
Taxed at grant
- Ordinary income on low grant-date FMV
- All future appreciation = capital gain
- Long-term holding period starts earlier
- Especially strong for early-stage startups
By filing an 83(b) election, the RSA recipient accelerates the taxable event to the grant date. This means the FMV of the shares at the time of grant is treated as ordinary income, even though the shares are not yet vested. From that point forward, any future appreciation in stock value is taxed at capital gains rates.
This strategy is especially effective when the stock’s grant date value is low — such as in early-stage startups — because it locks in a lower tax basis and starts the long-term capital gains holding period sooner.
Important considerations
30-day window
The 83(b) election must be filed with the IRS within 30 days of the grant date. Miss the window and the option is gone.
No refund on forfeiture
If the stock is later forfeited, there is no tax refund for income already paid.
Reporting accuracy
Accurate reporting is essential to avoid tax errors or double taxation. Keep a signed copy of the election in your records.
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83(b) window is 30 days
