83(b) Election
The 30-Day Decision That Can Save Founders Millions
For a founder receiving restricted stock, the §83(b) election is the most consequential tax decision of the next ten years — and it must be made within thirty days of grant. There is no extension. There is no late-filing relief.
The Quick Read
If you receive restricted stock as a founder or early employee and do not file an §83(b) election within 30 days of grant, you have likely just signed up to pay ordinary income tax on the value of every share as it vests over the next four years — potentially seven figures of incremental tax for a successful company, all at a 37% federal rate, often without liquidity to pay it. Filing the election within the 30-day window is roughly forty-five minutes of work and a $0 cost (plus a $0 ordinary income tax bill at company formation). The election also starts the §1202 QSBS five-year holding period at grant rather than vest — potentially preserving up to $15M of completely tax-free gain at exit under post-OBBBA rules. The 30-day window is statutory. There is no equivalent of a late filing.
- How Restricted Stock Is Normally Taxed
- What the §83(b) Election Changes
- The Mechanics, Visualized
- The 30-Day Filing Window: No Extensions, No Exceptions
- The Math: When the Election Pays and When It Does Not
- The QSBS Connection: Why §83(b) and §1202 Run Together
- What the Filing Actually Looks Like
- Worked Example: A Charlotte SaaS Founder's First 30 Days
- Frequently Asked Questions
Every founder who receives restricted stock at company formation faces the same 30-day window. File a §83(b) election within thirty days of the date the stock is transferred, and the entire equity grant is taxed at grant on the (typically nominal) fair market value at that moment, with future appreciation taxed as long-term capital gain. Miss the window, and the equity is taxed as ordinary income each year as it vests, at the FMV on each vesting date, on a tax bill that grows in lockstep with the company's success.
For a founder receiving 1,000,000 shares at $0.0001 per share at company formation, the choice between filing and not filing — thirty days of attention — can be the difference between $37 of total federal tax and several million dollars of incremental tax over the next four years. The math is asymmetric, the cost of filing is essentially zero, and the downside of missing the window is catastrophic. And yet, every single year, founders miss it.
This piece walks through how restricted stock is taxed by default, what the §83(b) election changes, the math of when filing is correct (almost always for founders), the interaction with §1202 QSBS now that OBBBA has made the higher exemption permanent, and the actual filing mechanics that survive IRS review.
How Restricted Stock Is Normally Taxed
Section 83(a) governs the tax treatment of property transferred in connection with the performance of services. The default rule: the recipient recognizes ordinary income equal to the excess of the fair market value of the property at the time it becomes substantially vested (i.e., transferable or no longer subject to a substantial risk of forfeiture) over the amount, if any, paid for the property.
For founder restricted stock with a typical four-year vesting schedule, this means the founder recognizes ordinary income each year as shares vest, based on the FMV on each vesting date. In the first year, with the company at formation valuation, this might be small — a few hundred dollars at most. By year four, with the company having raised a Series B at a $100M post-money valuation, the same vesting tranche might generate millions of dollars of ordinary income, taxed at the founder's marginal rate (typically 37% federal plus state), all without any liquidity event from which to pay the tax.
This is the default. It is also unworkable for any founder of a company that succeeds. The §83(b) election exists specifically to substitute a different default for those willing to file within the window.
What the §83(b) Election Changes
Section 83(b) permits the recipient of restricted property to elect, within thirty days of the transfer, to recognize the full fair market value of the property at grant as ordinary income in the year of the grant — ignoring the vesting restrictions entirely for income recognition purposes. The recipient pays tax on that grant-date value (typically nominal for founder stock) and then holds the equity as if the vesting restrictions did not exist for income tax purposes.
Three consequences flow from a properly filed election. First, no additional ordinary income is recognized as the equity vests — the entire ordinary-income event is captured at grant. Second, future appreciation is treated as capital gain when the equity is sold, not as ordinary income at vesting. Third, the holding period for long-term capital gain treatment, and for any §1202 QSBS holding period, begins at grant rather than at each vesting date.
The election does not eliminate the risk of forfeiture for non-tax purposes. If the founder leaves the company before the equity fully vests, they forfeit the unvested shares — and the §83(b) election does not entitle them to a refund of the tax paid on those forfeited shares. This is the principal risk of the election: paying tax on equity that ultimately is forfeited. For founder stock at company formation, where the FMV is nominal, this risk is essentially zero. For early employee stock with a higher FMV at grant, the analysis is more nuanced.
The Mechanics, Visualized
Three actions must occur within thirty days of the stock transfer for the election to be valid: a written election filed with the IRS, a copy delivered to the employer, and a copy retained by the taxpayer. The election form must contain specific information — failure to include any required element invalidates the election entirely.
The 30-Day Filing Window: No Extensions, No Exceptions
Section 83(b)(2) is unusually strict. The election must be filed not later than 30 days after the date the property is transferred. The Treasury Regulations under §1.83-2 reinforce this: the election may not be revoked except with the consent of the Commissioner, and there is no late-filing relief mechanism analogous to those available for many other tax elections.
The thirty days run from the date of the property transfer, not the date of grant under the equity plan, not the date the founder signed the restricted stock purchase agreement, and not the date the board approved the issuance. The relevant date is the date the stock is actually transferred — which is generally the date the restricted stock purchase agreement is fully executed and the consideration (typically a nominal cash payment) is delivered.
The IRS does not grant extensions. Tax professionals occasionally pursue private letter ruling requests for relief under §301.9100 for inadvertent failures, with mixed results, and only when the taxpayer can demonstrate that they acted reasonably and in good faith and that the IRS will not be prejudiced. The cost of pursuing such a ruling exceeds $20,000 in legal and filing fees, and the success rate is far from certain. The defensible practice is to file within the window, period.
The Math: When the Election Pays and When It Does Not
The election almost always pays for founders at company formation. The math is straightforward: at formation, the FMV of common stock is nominal (often $0.0001 per share), so the §83(b) election triggers essentially no current tax. Future appreciation is captured as long-term capital gain at exit rather than as ordinary income at each vesting date. The only downside scenario — the founder leaves before vesting and forfeits the equity — produces a small absolute loss that is dwarfed by the upside in any successful outcome.
For early employees joining after a priced funding round, the analysis is more nuanced. If a Series A or Series B round has set the FMV of common stock at $0.50 per share via a 409A valuation, an employee receiving 100,000 restricted shares would owe ordinary income tax on $50,000 of value at grant if the §83(b) election is filed. That is real money out of pocket, and the forfeiture risk if the employee leaves before vesting is meaningful. Many employees in this situation correctly elect not to file. The decision rests on the FMV at grant, the forfeiture probability, the projected company trajectory, and the employee's available cash to pay the immediate tax.
For founders, however, the calculus is essentially always to file. The grant-date FMV is nominal; the upside is asymmetric; the cost of filing is forty-five minutes; the cost of not filing, if the company succeeds, is several percentage points of effective tax rate on the entire founder stake.
The QSBS Connection: Why §83(b) and §1202 Run Together
Section 1202, the qualified small business stock exclusion, permits founders and early employees of qualifying C-corporations to exclude long-term capital gain on QSBS up to a per-issuer cap. OBBBA, signed July 4, 2025, materially expanded §1202 for stock issued after that date: the per-issuer cap rose from $10M to $15M (or 10x basis, whichever is greater), the gross-asset ceiling for the issuing corporation rose from $50M to $75M, and the prior single 5-year holding period was replaced with a tiered exclusion — 50% at three years, 75% at four years, and 100% at five years (with the unexcluded portion taxed at the 28% §1(h) rate). The pre-July 4, 2025 rules continue to govern stock issued before that date.
The interaction with §83(b) is precise. Without an §83(b) election, restricted stock is not considered “acquired” for §1202 purposes until it vests — meaning the holding period restarts at each vesting date. A founder with four-year vesting who exits four years after formation may have zero shares that have reached the 100% exclusion tier, even though the company is otherwise QSBS-qualified.
With a properly filed §83(b) election, the entire grant is treated as acquired at the date of grant for §1202 purposes. The holding-period clock starts immediately. Three years post-grant unlocks the 50% tier; five years post-grant unlocks the full 100% exclusion — converting up to $15M of gain per founder into a 0% federal rate at exit.
This is the consequence most founders miss when they skip the election. The marginal federal tax on $15M of capital gain at 23.8% is $3.57M. The §83(b) election, properly filed and run alongside QSBS qualification, converts that $3.57M of tax into $0. Per founder. Per qualifying entity.
What the Filing Actually Looks Like
Two filing pathways exist as of 2026. The traditional path: a one-page election (or the IRS standardized Form 15620, released in late 2024) filed by certified mail with the IRS service center where the taxpayer files their return. The newer electronic path: Form 15620 submitted through the IRS's mobile-friendly forms portal, available beginning July 2025, which provides immediate confirmation of receipt. The IRS has indicated electronic submission is the preferred method, though paper filing by certified mail with return receipt remains universally accepted. Filers should use one method or the other, not both.
Required content (per Treas. Reg. §1.83-2(e)):
§83(b) Election Form — Required Elements
[ ] Taxpayer's name, address, and Social Security number
[ ] Description of the property (e.g., 1,000,000 shares of common stock)
[ ] Date of transfer and taxable year for which election is made
[ ] Nature of the restrictions (typically four-year vest with one-year cliff)
[ ] Fair market value at the time of transfer
[ ] Amount paid for the property, if any
[ ] Statement that copy of election was provided to the employer
[ ] Signature of the taxpayer and date
Filing logistics: send the original to the IRS service center via certified mail with return receipt requested. Deliver a copy to the company that issued the stock. Retain a copy with the receipt. Attach a copy to the taxpayer's federal income tax return for the year of the grant. The certified mail receipt is the proof-of-mailing evidence the IRS will request if the election's timeliness is ever challenged.
Worked Example: A Charlotte SaaS Founder's First 30 Days
"Marcus," Charlotte SaaS Founder, $0.0001 Common Stock at Formation
Marcus founded a B2B SaaS company in Charlotte's South End in early 2026. At formation, the company issues him 4,000,000 shares of common stock at $0.0001 per share (par value), subject to a four-year vesting schedule with a one-year cliff. Marcus pays $400 in cash for the shares. The company's 409A valuation at formation values common stock at $0.0001 per share. Marcus is married, files jointly, has $280,000 of W-2 income from his prior role, and lives in NC (4.25% state).
Within ten days of executing the restricted stock purchase agreement, Marcus files an §83(b) election. The election reports grant-date FMV of $400 (4,000,000 shares × $0.0001), amount paid of $400, and net taxable income of $0. Marcus mails the election by certified mail to the IRS Kansas City service center, delivers a copy to the company's general counsel, and retains a copy with his tax records. Total time invested: 45 minutes. Total tax cost in 2026 from the election: $0.
Five years later, the company is acquired in an all-cash transaction at a $200M valuation. Marcus's 4,000,000 shares (fully vested) sell for $40,000,000. The company qualifies as QSBS throughout (gross assets under the post-OBBBA $75M ceiling at issuance, active business, C-corp). His basis is $400. His gain: $39,999,600.
Federal tax effect with §83(b) election + QSBS:
Total gain on exit: $39,999,600
QSBS exclusion (greater of $15M or 10x basis):
10x basis = $4,000; $15M cap controls: $15,000,000
Excluded from federal tax: $15,000,000
Taxable gain (LTCG, 23.8% all-in): $24,999,600
Federal tax on excluded portion: $0
Federal tax on taxable portion: $5,949,905
Federal tax effect without §83(b) election (vested over 4 years; exit in year 5):
Vesting recognition (years 1–4) as company FMV grew:
approx. ordinary income recognized: $20,000,000
Federal ordinary tax (37% blended): $7,400,000
(NC tax adds an additional layer)
Plus QSBS not eligible — holding period not met:
remaining gain on sale taxed at LTCG:
approx. additional federal tax: $4,755,000
Total federal tax burden (no election): $12,155,000
The 45-minute decision Marcus made within his first thirty days saved approximately $6.2M of incremental federal tax at exit, plus the ordinary-income liability problem during years where he had no liquidity to pay it. The §83(b) election was, by a wide margin, the single highest-leverage tax decision of his career.
Illustrative composite. Actual outcomes depend on the company's QSBS qualification status, the founder's holding period, applicable federal and state tax rates, and the timing of vesting and exit. Tax law is current as of 2026 and reflects OBBBA's expansion of the §1202 cap.
Frequently Asked Questions About the §83(b) Election in 2026
What happens if I miss the 30-day window?
The election cannot be made. There is no extension, no late-filing relief absent a §301.9100 private letter ruling (which is expensive and uncertain), and no equivalent administrative remedy. Restricted stock without a timely §83(b) election is taxed under the §83(a) default — ordinary income recognition as each tranche vests, at the FMV on each vesting date.
Should I file an §83(b) election if I am an early employee, not a founder?
It depends on the FMV at grant. For early employees joining at or near formation, where common stock FMV is still nominal, the answer is generally yes. For employees joining after a priced funding round, where common stock has a meaningful 409A valuation, the answer requires modeling the immediate tax cost against the projected forfeiture risk and the projected company trajectory. The decision is fact-specific and should not be made without running the numbers.
Does the §83(b) election apply to RSUs?
No. RSUs (restricted stock units) are contractual promises to deliver stock in the future, not transfers of property under §83. The §83(b) election applies only to actual transfers of restricted stock — the two are not interchangeable. RSU recipients have no §83(b) election available and recognize ordinary income at vesting.
If I file the election and then leave the company before vesting, do I get my tax back?
No. Section 83(b)(2) provides no refund mechanism for tax paid on forfeited shares. This is the principal risk of the election: paying tax on equity that ultimately is forfeited. For founder stock at formation FMV, this risk is small in absolute dollars. For higher-FMV grants, the analysis is more sensitive.
How does the §83(b) election interact with §1202 QSBS post-OBBBA?
Powerfully. For stock issued after July 4, 2025, OBBBA expanded the §1202 exclusion cap from $10M to $15M (or 10x basis), raised the issuer's gross-asset ceiling from $50M to $75M, and replaced the single 5-year holding period with a tiered exclusion (50% at three years, 75% at four years, 100% at five years). Without an §83(b) election, restricted stock is not considered acquired until each vesting date — restarting the holding-period clock annually. With a timely §83(b) election, the entire grant is acquired at grant, and the clock starts immediately. Founders who file §83(b) and hold for five years from grant can convert up to $15M of gain into a 0% federal rate at exit.
The §83(b) election is the rare tax decision that has a cost of roughly zero, a downside of essentially zero for founder-stage equity, and an upside that scales with every dollar of company value created over the next decade. It is also the rare tax decision that cannot be made retroactively, cannot be extended, and cannot be cured.
If you are a founder receiving restricted stock or have just incorporated a new venture, this is the conversation worth having today — not the day before the window closes.
This article is for educational purposes only and does not constitute individualized tax, legal, or investment advice. Tax law is current as of the 2026 tax year and may change. The §83(b) election has consequences that depend heavily on the specific facts of the equity grant; consult with qualified tax counsel before filing or declining to file. Llewellyn Financial is a fee-only, fiduciary RIA based in Charlotte, NC.
