How to File a Section 83(b) Election: The 30-Day Window for Restricted Stock and Founders' Shares

A Section 83(b) election lets a taxpayer pay income tax now — at the grant-date fair market value — rather than at vesting, converting all future appreciation into capital gain. For founders buying stock at or near par value on day one of incorporation, the election costs almost nothing but starts the capital gains clock and the five-year QSBS holding period immediately. The catch: the IRS gives exactly 30 calendar days from the transfer date, the election is irrevocable, and there are no exceptions for missed deadlines. A CPA who misses this window — or fails to advise a client it exists — can face malpractice exposure on a seven-figure gain.

Prerequisites

• Confirm the transfer involved actual property (stock, partnership interest) — not RSUs or unexercised options, which are ineligible
• Identify the exact date of transfer (starts the 30-day clock)
• Obtain or estimate fair market value at the grant date, disregarding lapse restrictions
• Confirm the amount the taxpayer paid for the property
• Obtain a complete description of the vesting schedule and forfeiture conditions

Step 1: Confirm Whether Section 83 Applies

IRC §83(a) applies when property is transferred in connection with the performance of services and the property is subject to a substantial risk of forfeiture — meaning the recipient's rights will lapse if they don't continue providing services or meet other conditions. The election under IRC §83(b) is available only when §83(a) applies.

Eligible property: Common stock subject to vesting, restricted stock, exercised (but not yet fully vested) stock options, and partnership profits interests.

Ineligible for §83(b): Restricted Stock Units (RSUs), unvested stock options (no property transfer at grant), and fully vested stock (no forfeiture risk, so §83(a) doesn't apply in the first place).

This distinction matters because clients — especially startup employees — frequently use "restricted stock" and "RSU" interchangeably. Under an RSU plan, the company makes a promise to deliver shares at a future date. No property changes hands at grant. Section 83(b) cannot be made on a promise, and by the time RSUs settle at vesting, they are fully taxable as ordinary income with no election available.

Step 2: Assess Whether the Election Makes Economic Sense

A §83(b) election requires the taxpayer to include in ordinary income the grant-date spread — the difference between the property's fair market value and the amount paid — immediately. The trade: pay ordinary income rates now on the current spread, then pay capital gains rates later on all appreciation from grant to sale.

Best case for electing: The spread at grant is zero or minimal. A founder receiving shares at par value on day one of incorporation faces a negligible income inclusion — often a few hundred dollars. All future appreciation converts to long-term capital gain once the one-year holding period is met. For a startup that reaches a $50/share exit from a $0.0001 par value grant, this election is one of the highest-leverage decisions in the tax code.

Worst case for electing: A late-stage employee receiving restricted stock at a meaningful discount from a recently priced funding round. The spread may be $50,000 to $200,000 or more — a real ordinary income hit — and the future appreciation depends on an uncertain exit. Critically, if the shares are forfeited before vesting, the taxpayer cannot recover the income taxes paid on the original inclusion. The only tax benefit is a capital loss equal to the amount actually paid for the shares, not the amount included in income under the election.

Run the expected-value analysis using three inputs: (1) current spread, (2) expected exit price and timeline, and (3) the taxpayer's marginal ordinary income rate versus expected capital gains rate. For zero-spread founder scenarios, election is clearly optimal. For large-spread situations, forfeiture risk governs the analysis.

Step 3: Determine Fair Market Value at the Transfer Date

The election is made at the grant-date fair market value, ignoring "lapse restrictions" — restrictions that lapse over time based on vesting. Under Treasury Regulation §1.83-3(a)(1), only "non-lapse restrictions" (permanent contractual limitations) are considered in determining FMV; the vesting schedule itself does not reduce the FMV for election purposes.

For C-Corp startup equity: A current 409A valuation (conducted under the methodology of IRS Revenue Ruling 59-60 and Notice 2005-1) is the standard reference point. Use the common stock value from the 409A report, not the preferred stock price.

For newly incorporated companies with no operations or outside funding: FMV is typically equal to par value, making the spread — and the income inclusion — approximately zero.

For partnership profits interests: Rev. Proc. 93-27 provides that the IRS will not treat the receipt of a profits interest as a taxable event when certain conditions are met (services to or for the benefit of the partnership, no publicly traded partnership, no readily determinable FMV). When those conditions apply, making an §83(b) election includes zero or a negligible amount in income — but starts the capital gains holding period, which is the planning objective.

Step 4: Draft the Section 83(b) Election Letter

There is no IRS form for a §83(b) election — it is a free-form letter. The required contents are specified in Treasury Regulation §1.83-2(e):

1. Taxpayer identification: Name, address, and Social Security number (or EIN for entity taxpayers)
2. Property description: Type and number of shares, or description of the partnership interest received
3. Transfer date: The exact date the property changed hands (this is the date the 30-day deadline runs from)
4. Taxable year: The year for which the election is being made
5. Nature of restrictions: Description of the vesting schedule and any other conditions of forfeiture
6. Fair market value: FMV at the date of transfer, disregarding lapse restrictions
7. Amount paid: The consideration paid by the taxpayer for the property
8. Transferor notice: A statement that copies of the election have been furnished to the person for whom services were performed (the employer, company, or partnership)

The letter must be signed by the taxpayer. In community property states — California, Texas, Arizona, Washington, Nevada, Idaho, Louisiana, New Mexico, Wisconsin, and Alaska (by election) — the spouse must also sign if the transferred property would be treated as community property under applicable state law.

Step 5: File Within 30 Calendar Days of the Transfer Date

The 30-day deadline is absolute. Treasury Regulation §1.83-2(b) states the election "must be made not later than 30 days after the date of such transfer." There is no extension mechanism, no cure period, and no IRS correction program for late elections.

Where to file: The original election goes to the IRS service center where the taxpayer files their federal income tax return. Verify the current mailing address at IRS.gov — service center assignments change periodically.

How to send it: Certified mail with return receipt requested. The certified mail receipt and return receipt confirmation are the only contemporaneous evidence of timely filing. Retain these permanently in the client file.

Attachments: Beginning with tax years starting after December 31, 2015, the IRS eliminated the requirement to attach a copy of the §83(b) election to the annual return (Treasury Decision 9779). The election must still be mailed to the service center within 30 days. Despite the regulatory change, many practitioners continue to include a copy with the return as belt-and-suspenders documentation — an approach that does no harm.

Transferor copy: The regulation requires furnishing a copy of the election to the person for whom services were performed (the company or partnership). Confirm this step is completed and documented.

Step 6: Coordinate With QSBS, Capital Gains Holding Period, and NIIT Planning

A valid §83(b) election restructures three downstream tax outcomes simultaneously:

QSBS under IRC §1202: The five-year holding period required to qualify for the §1202 gain exclusion begins on the date the property is transferred — not on the dates shares vest. For a founder on a standard four-year vesting schedule, a timely §83(b) election means all shares count toward the five-year clock from day one. Without the election, each tranche of vesting shares starts its own independent five-year clock, potentially delaying full QSBS eligibility by years. For employees who exercise options early (before vesting), the same logic applies: filing the §83(b) election within 30 days of early exercise starts both the QSBS clock and the long-term capital gains clock on the exercise date. For complete QSBS eligibility requirements, documentation steps, and OBBBA modifications, see the QSBS Guide for CPAs.

Long-term capital gains holding period: Under Treasury Regulation §1.83-4(b), the one-year holding period for long-term capital gains rates begins on the grant date when an §83(b) election is in effect. Without the election, each vesting tranche starts its own holding period on the vesting date. For a client on a four-year, one-year-cliff vesting schedule, shares that cliff-vest are taxable as short-term capital gain if sold within 12 months of vesting — even if the original grant occurred years earlier and the §83(b) window has long passed.

Net Investment Income Tax: Gain on sale that would otherwise be NII (passive investment income under IRC §1411) is not affected by the §83(b) election itself, but the conversion of vesting-date ordinary income to grant-date ordinary income — often at a lower spread — reduces the total ordinary income inclusion. All post-election appreciation is taxed as capital gain, not ordinary income, which avoids the NII 3.8% surtax on future gains if the taxpayer's total investment income remains below the MAGI threshold. Model NIIT exposure as part of the exit scenario analysis, particularly for founders and early employees in high-growth companies.

Common Mistakes

Missing the 30-day window. The most common and most consequential error. The clock starts running on the date the stock purchase agreement is signed and the shares are transferred — not on the client's tax return due date, not when the client first asks about it. Advise clients at the moment of equity grant. Do not wait for a year-end tax review.

Confusing restricted stock with RSUs. RSUs do not qualify for §83(b) treatment. A client who receives RSUs and asks about the election must understand that their income is locked in at settlement — no planning opportunity exists before vesting.

Filing with the wrong IRS service center. The election must go to the service center where the taxpayer files their federal return, not to a generic IRS address. Use the current "Where to File" instructions on IRS.gov; addresses change.

Omitting the community property spouse's signature. In community property states, a missing spouse signature can invalidate the election. Confirm marital status and domicile at the time of the grant.

Not retaining certified mail documentation. The IRS may question years later whether an election was timely made. The certified mail receipt and return receipt card are the only contemporaneous proof of filing date. If those documents are lost, reconstructing the filing is difficult and an IRS challenge becomes very difficult to defeat.

Electing on a large-spread grant without modeling forfeiture risk. For restricted stock grants where FMV significantly exceeds the purchase price, the income tax paid on election is sunk if shares are forfeited. Model the probability-weighted expected value of electing versus not electing before recommending the election to a client facing a substantial spread.

Forgetting to furnish the election copy to the employer. Treasury Regulation §1.83-2(e) requires it. The step is easily overlooked and creates a technical defect in the election.

FAQ

Does the §83(b) election apply to stock options?

Not at grant — options represent the right to buy property, not the transfer of property itself. However, when an employee exercises an incentive stock option (ISO) or nonqualified option before all shares have vested, the resulting restricted stock is property subject to forfeiture. In that scenario, a §83(b) election can be made within 30 days of the early exercise date. Early exercise programs at startups are specifically designed to enable this — allowing employees to buy shares while the spread is minimal and start both the capital gains and QSBS holding periods from the exercise date.

What happens if the shares are forfeited after making the election?

The taxpayer cannot recover the income taxes paid on the grant-date spread. The tax code allows only a capital loss equal to the amount actually paid for the shares (not the amount included in income under the election). This asymmetry — taxed on FMV at grant, but only a small capital loss on forfeiture — is the primary financial risk of the election and must be weighed explicitly against forfeiture probability.

Can a §83(b) election be revoked?

Only with IRS consent, which the IRS grants only upon a showing of mistake of fact (not mistake of law or a change in expected outcome). As a practical matter, the election is irrevocable. Clients must understand this before electing, particularly where forfeiture risk is significant.

Does §83(b) apply to LLC profits interests?

Yes. Rev. Proc. 2001-43 clarifies that a §83(b) election may be made on the receipt of a profits interest even though the current FMV is treated as zero. The effect: zero income inclusion at grant, but the capital gains holding period begins immediately. Fund managers, startup LLCs granting carried interest, and real estate partnerships granting profits interests all benefit from the election's holding period mechanics even in the absence of any taxable spread.

How does the election interact with the entity structure decision?

The election is most valuable in combination with a C-Corp structure eligible for QSBS under IRC §1202. Many venture-backed founders default to C-Corp from day one specifically to preserve the §83(b) election advantage alongside the §1202 exclusion opportunity. For clients still deciding between entity types, the §83(b) election potential is a concrete, quantifiable factor in the analysis. See our entity selection guide for CPAs for the complete framework, including when C-Corp's retained earnings advantages and QSBS eligibility outweigh the QBI deduction cost of C-Corp status.

What IRS service center address should be used?

The correct address depends on where the taxpayer files their federal income tax return and changes periodically as the IRS reorganizes. Always verify the current address using the "Where to File Paper Tax Returns With or Without a Payment" page on IRS.gov before mailing any §83(b) election.

Arvori helps CPAs track equity compensation events, flag §83(b) election deadlines, and coordinate the client communication that prevents missed windows. Learn more at arvori.app.