Section 83(b) Election: Tax at Grant, Not at Vesting

The Section 83(b) election lets you pay income tax on restricted stock at its (usually low) grant-date value instead of its (often much higher) vesting-date fair market value. Filing within 30 days of grant is mandatory — there are no exceptions, no extensions, and no late elections.

What Section 83(b) Is and How It Differs from RSUs

IRC §83 governs the taxation of property — including stock — transferred in connection with the performance of services. The default rule under §83(a) is simple: you recognize ordinary income when the property vests (i.e., when it is no longer subject to a substantial risk of forfeiture). The amount recognized is the fair market value at vesting minus any amount you paid.

The §83(b) election is an opt-in to a different tax timing rule: you recognize income at grant instead of at vesting. The trade-off is paying tax earlier in exchange for converting future appreciation from ordinary income (taxed at up to 37%) to long-term capital gain (taxed at 0%, 15%, or 20%).

Critically, §83(b) elections apply to restricted stock — shares you receive now but that can be forfeited if you leave before vesting. They do not apply to RSUs. RSUs are promises to deliver shares at vesting; there is no property to elect on at grant. For RSU cost basis mechanics, see our RSU cost basis guide.

The 30-Day Filing Deadline: Absolute, No Exceptions

Under Treas. Reg. §1.83-2(b), the §83(b) election must be filed with the IRS within 30 days of the grant date. This deadline is statutory and the IRS has zero discretion to accept late filings. Several court cases have confirmed this — taxpayers who missed the deadline by even one day lost the election permanently.

What the filing requires:

• A written statement mailed to the IRS service center where you file your return. The statement must include: your name, address, SSN, a description of the property, the date of transfer, the nature of the restriction, the fair market value at grant, the amount paid (if any), and a declaration that you are making a §83(b) election.
• A copy of the election must also be provided to your employer within 30 days of grant.
• Starting with tax year 2016, you no longer need to attach a copy to your tax return (the IRS removed that requirement under the PATH Act), but you should retain a copy and proof of mailing (certified mail return receipt recommended).

If you are on H-1B and your grant date falls during a period when you are traveling outside the U.S., the 30-day clock is still running. Build a calendar reminder immediately upon receiving any restricted stock grant agreement.

Tax Calculation: Grant vs. Vesting Compared

The economic difference between electing and not electing can be substantial for high-growth startups:

The §83(b) election also starts your long-term capital gain holding period clock at the grant date rather than the vesting date. This means shares may qualify for LTCG treatment sooner, and you avoid selling vested shares immediately for tax — which can disrupt your equity strategy.

Risk of Stock Price Decline After Election

The §83(b) election is a one-way door with real downside risk. If the stock price falls significantly after you make the election, or if you forfeit your shares by leaving the company before vesting, you face adverse tax consequences:

• Forfeiture after election: If you leave before vesting and forfeit shares, you receive no deduction for the income you already recognized at grant. You paid tax on income that evaporated. The only exception is if you paid actual consideration for the shares — in that case, you may recognize a capital loss.
• Price decline without forfeiture: If the stock is worth less at sale than at the grant-date FMV you reported, your LTCG is lower than expected (or you have a capital loss), but you cannot recover the ordinary income tax you paid at grant.
• Illiquid startup stock: For early-stage companies, FMV at grant is determined by a 409A valuation. If the company fails, the stock is worthless and your grant-date tax payment is unrecoverable beyond a capital loss deduction (which is limited to $3,000 per year against ordinary income).

The §83(b) election is most clearly beneficial when: grant-date FMV is very low (making the upfront tax small), you have high confidence in the company's trajectory, and you intend to stay through the full vest.

Early Exercise ISOs + §83(b) to Minimize AMT

Many startup stock option plans allow early exercise — purchasing shares before they vest. When you early exercise ISOs (Incentive Stock Options), you receive restricted stock subject to the vesting schedule. Filing a §83(b) election at that point is one of the most powerful AMT minimization strategies available.

How it works with AMT:

• Normally, when ISOs vest, the spread (FMV minus exercise price) is an AMT preference item under IRC §56(b)(3). This can generate a large AMT liability.
• If you early exercise and file §83(b), you recognize the entire AMT preference item at grant when the spread is typically small or zero (at many startups, the exercise price equals the 409A FMV at grant).
• Future appreciation creates long-term capital gain, not an AMT preference item, because you already recognized the bargain element.

The strategy requires careful analysis of your AMT exposure. If the grant-date spread is already significant (e.g., for ISOs granted with an exercise price below current FMV due to a cap table error), early exercise may trigger immediate AMT. Consult the Form 6251 AMT guide to model your exposure before exercising.

H-1B Startup Scenarios: Special Considerations

H-1B employees at startups face a unique intersection of immigration status and equity compensation that makes §83(b) planning especially important:

• Job change and visa transfer: If you leave a startup before full vesting to transfer your H-1B to another employer, you forfeit unvested shares. If you filed a §83(b) election, you already paid tax on those shares and cannot recover it. Model the worst-case forfeiture scenario before electing.
• Equity as a large share of total compensation: Many H-1B holders at startups have large equity grants relative to base salary. The upfront tax on a §83(b) election may be substantial even at a low 409A valuation if the grant is large.
• Acquisition scenarios: If your startup is acquired before full vesting, unvested shares often accelerate (single or double trigger). With a §83(b) election in place, accelerated vesting does not create additional ordinary income — you have already recognized the grant-date income and the entire acquisition price above that is capital gain.
• ISO vs. NSO treatment: The §83(b) election applies to both ISOs and NSOs when early exercised. The tax character differs significantly between the two. See our ISO vs. NSO for H-1B employees guide before electing on NSO shares, where the income is always ordinary regardless of holding period.

For most H-1B employees at well-funded startups with a plausible IPO or acquisition path, the §83(b) election is worth filing when the grant-date FMV is low. The 30-day window is unforgiving — treat it as a hard deadline from the moment you receive any restricted stock or early-exercise option grant.