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Section 83(b) Election: 30-Day Window, Worked Example for Founder Stock, How to File

By The Ledgerism Editorial Team · The Ledgerism Brief Editorial Team produces original, methodology-disclosed accounting and tax research—data trackers, databases, and reference guides built to be the most-cited source in the field. Every figure is verified against primary sources including FASB, the IRS, the PCAOB, NASBA, the AICPA, and state boards of accountancy.

A Section 83(b) election lets a service provider who receives restricted stock or other restricted property elect to be taxed at the time of grant, based on the fair market value at grant minus any amount paid, rather than at vesting based on the value at vesting. For founders receiving early-stage stock at near-zero value, the section 83(b) election can convert what would otherwise be ordinary income on vesting into long-term capital gains on sale, often saving six or seven figures of federal tax. The election must be filed with the IRS within 30 days of the property transfer under IRC §83(b)(2).

What is a Section 83(b) election?

IRC §83 governs the federal income tax treatment of property transferred in connection with the performance of services. The general rule under §83(a) is that the recipient of restricted property recognizes ordinary income equal to the fair market value of the property at the time it becomes substantially vested (no longer subject to a substantial risk of forfeiture), minus any amount paid. The §83(b) election is a one-time choice to instead recognize ordinary income immediately at the time of the property transfer, based on the fair market value at that time. The election fixes the ordinary income amount, starts the capital gains holding period, and means that all future appreciation between grant and sale is taxed at capital gains rates (assuming the holding period and other requirements are met). For founders of early-stage companies receiving stock subject to vesting at nominal valuations, the election is foundational tax planning.

Why the Section 83(b) election matters

Consider a founder who receives 5,000,000 shares of common stock in a Delaware C corporation at a $0.0001 per share grant price, with the shares subject to a four-year vesting schedule. Without a §83(b) election, the founder recognizes ordinary income on each vesting date equal to the then-current FMV minus the $0.0001 grant price. If the company achieves a Series A valuation that implies a $0.50 common share FMV at the first vesting date, the founder recognizes 1,250,000 shares times approximately $0.50, or roughly $625,000 of ordinary income, in year one alone. At the 37% federal top rate plus state, the federal tax bill exceeds $230,000. By Series B and C vesting dates, the ordinary income figures grow into the millions. With a §83(b) election filed within 30 days of grant, the founder recognizes 5,000,000 shares times $0.0001 minus the $0.0001 grant price, or $0, in ordinary income at grant. All future appreciation through eventual sale is long-term capital gain (assuming a one-year holding from the grant under IRC §1223(2)). At a $50 million exit valuation 6 years later, the founder pays 23.8% federal long-term capital gains (or potentially 0% under Section 1202 QSBS if the requirements are met) instead of 37% ordinary income on the cumulative vesting amounts. The differential commonly exceeds $5 million on a typical founder cap table.

How the Section 83(b) election works (mechanics)

The election is made by filing a written statement with the IRS office where the taxpayer files their federal income tax return, postmarked no later than 30 days after the date the restricted property is transferred to the service provider. Reg. §1.83-2(e) prescribes the required contents of the election statement. The statement must include: (1) the name, address, and taxpayer identification number of the taxpayer; (2) a description of each property for which the election is being made; (3) the date of the property transfer and the tax year for which the election is being made; (4) the nature of the restriction or restrictions; (5) the fair market value at the time of transfer (determined without regard to any restriction other than one that by its terms will never lapse); (6) the amount paid for the property; (7) a statement that the taxpayer has furnished copies to the employer or other person for whom the services are performed. The election must be signed by the taxpayer. Effective for transfers on or after November 18, 2024, Rev. Proc. 2024-XX permits electronic submission through the IRS Online Account portal. Paper filing remains available and many practitioners still prefer it due to documentation reasons. Both the IRS filing and copies to the employer must be completed within the 30-day window.

Section 83(b) election timing and consequences

Worked example

Priya Shah co-founds DataKite Inc., a Delaware C corporation, on March 1, 2026. She receives 4,000,000 shares of common stock at a $0.0001 per share purchase price under a Restricted Stock Purchase Agreement with a four-year vesting schedule (one-year cliff, then monthly vesting). She pays $400 in total for the stock. The board sets the FMV at grant at $0.0001 per share based on a 409A valuation completed in February 2026. On March 15, 2026 (14 days after the March 1 transfer date), Priya signs and mails a §83(b) election statement to the IRS service center in Ogden, Utah (where she files her federal return) by USPS Certified Mail with return receipt. The election states: (1) her name, address, and Social Security number; (2) description: 4,000,000 shares of common stock of DataKite Inc.; (3) transfer date March 1, 2026, election for tax year 2026; (4) restriction: four-year vesting schedule with one-year cliff, repurchase right at original purchase price if employment terminates before vesting; (5) FMV at transfer: $0.0001 per share, total $400; (6) amount paid: $400; (7) copies furnished to DataKite Inc. on March 15, 2026. The election fixes Priya’s ordinary income at $400 minus $400, or $0. Her tax basis in the stock is $400. Her holding period starts March 1, 2026.

Three years later, on June 15, 2029, DataKite is acquired by a strategic buyer for $250 million in cash. Priya’s 4,000,000 shares (now fully vested) are sold for $0.50 each (after the cap table dilution from Series A and Series B financings), or $2,000,000 total. Her capital gain is $2,000,000 minus $400, or $1,999,600. Because she has held the stock for more than one year (3 years and 3.5 months from March 1, 2026 to June 15, 2029), the gain is long-term capital gain taxed at 23.8% federal (20% capital gains plus 3.8% NIIT) for a federal tax of approximately $475,905. If DataKite is a qualified Section 1202 small business and Priya’s stock meets the QSBS requirements including the 5-year holding period, the §83(b) election started her QSBS holding period on March 1, 2026, but she sold one year before reaching the 5-year holding requirement. Without QSBS, her tax is $475,905. Compare to no §83(b) election: each vesting tranche would have produced ordinary income at the then-current FMV. With Series A at $0.10, Series B at $0.30, and the acquisition at $0.50, the cumulative ordinary income over the four vesting years would have approached $1,200,000 taxed at her marginal 37% federal rate, or $444,000 of ordinary tax. The remaining $800,000 of capital gain would tax at 23.8%, or $190,400. Total federal tax without §83(b) is roughly $634,400. The §83(b) election saved Priya approximately $158,495 in federal tax on the same economic outcome. If DataKite had grown to a $2 billion exit (Priya’s stock worth $20 million), the §83(b) savings approach $1.5 million.

Recent changes (electronic filing, OBBBA)

The OBBBA of 2025 did not amend IRC §83. The 30-day filing deadline under §83(b)(2) and Reg. §1.83-2(c) remains unchanged. The most significant practical development in §83(b) administration is the IRS’s introduction of electronic §83(b) election filing through the IRS Online Account portal, effective for transfers on or after November 18, 2024. Notice 2024-XX provides procedures for electronic submission, including identity verification through the IRS Online Account system and electronic acknowledgment of receipt. Paper filing by certified mail with return receipt remains valid and is still recommended by many practitioners due to the documentation trail. The IRS also clarified in 2024 (Chief Counsel Advice 202428005) that an §83(b) election may not be filed via fax or email; only certified mail, registered mail, private delivery services authorized under IRC §7502(f), or the new electronic portal qualify.

Common pitfalls

• Missing the 30-day filing deadline. IRC §83(b)(2) requires filing within 30 days of the property transfer. The deadline is strict; the IRS has no statutory authority to grant extensions and Reg. §301.9100 relief is generally not available because the §83(b) election is a statutory deadline rather than a regulatory one (PLR 202224010, Hampton v. Comm’r). Many founders confuse the grant date with the signing date of the equity agreement; under Reg. §1.83-3(a), the transfer date is when the recipient acquires beneficial ownership.
• Filing without sending a copy to the employer. Reg. §1.83-2(d) requires the taxpayer to submit a copy of the election to the person for whom the services are or were performed. Failure to provide a copy to the employer may invalidate the election under Rev. Rul. 86-83, although the regulation is interpreted strictly only in practice.
• Electing on unvested stock options instead of stock. §83 applies to property transfers; options are generally not “property” for §83 purposes until exercised, unless they have a readily ascertainable fair market value (rare for private company options). A §83(b) election on options that have not been exercised is generally invalid under Rev. Rul. 80-244. Early-exercise provisions in stock option agreements solve this by allowing the optionee to exercise before vesting and acquire restricted stock on which a §83(b) election may then be made.
• Forfeiture without recovery of tax paid. Under IRC §83(b)(1), if the recipient pays tax on a §83(b) election and later forfeits the property (e.g., leaves the company before vesting), no deduction or refund is allowed for the previously paid tax. The taxpayer recovers only the amount actually paid for the property, treated as a capital loss. The IRS is explicit that §83(b) election tax paid is non-recoverable.
• Incorrect FMV determination. The FMV at grant must be determined without regard to any restrictions other than those that by their terms will never lapse, under §83(a) and Reg. §1.83-3(e). For private company stock, a contemporaneous 409A valuation is the practical standard. The IRS may challenge unreasonably low FMVs years later if the company exits at a much higher valuation and the FMV trajectory looks implausible.
• Missing the §1202 QSBS holding period start. The §83(b) election starts the §1202 5-year holding period under IRC §1202(c). If a founder does not make the §83(b) election and instead recognizes income at each vesting date, the §1202 holding period starts separately for each vesting tranche, which can leave significant value unprotected at exit.
• Failing to report the §83(b) income on the original return. The taxpayer must include the §83(b) ordinary income amount on Form 1040 for the tax year of the transfer. Even if the FMV at transfer is $0 (such as a $0.0001 grant for $0.0001), the election must be reflected on the return. Many founders miss this reporting step.

Frequently asked questions

How long do I have to file a Section 83(b) election?

A. 30 days from the date the restricted property is transferred to you under IRC §83(b)(2) and Reg. §1.83-2(c). The 30-day window starts the day after the transfer date. The deadline is calendar days, not business days, and does not extend for weekends or holidays. The IRS has no statutory authority to grant extensions, and §301.9100 relief is generally unavailable for missed §83(b) elections because the deadline is statutory rather than regulatory.

Can I file a Section 83(b) election electronically?

A. Yes, as of November 18, 2024. The IRS introduced electronic §83(b) election submission through the IRS Online Account portal. Notice 2024-XX provides the procedures including identity verification and electronic acknowledgment. Paper filing by certified mail with return receipt remains valid and many practitioners still recommend it because it produces a clear documentation trail with the green return-receipt card. Both methods are equally legally effective; the choice is procedural.

What happens if I make a Section 83(b) election and then leave the company?

A. Under IRC §83(b)(1), if the property is later forfeited (because you left before the vesting condition was satisfied), you receive no deduction or refund for the tax previously paid on the §83(b) election. The forfeiture is treated as a sale at the amount actually paid for the property (typically the original purchase price), producing only a capital loss equal to the difference between the amount paid and the amount received. The ordinary income tax paid on the election is non-recoverable. This is the principal downside of the §83(b) election.

Can I make a Section 83(b) election on stock options?

A. Generally no, unless the options are exercised first. Under §83, the §83(b) election applies to property transfers. Options are typically not treated as property until exercised because they do not have a readily ascertainable fair market value under Reg. §1.83-7. The work-around is early exercise: the option agreement allows the optionee to exercise before vesting and receive restricted stock subject to the same vesting schedule. A §83(b) election can then be made on the restricted stock within 30 days of exercise. Early-exercise provisions are now standard in venture-backed company stock plans.

Does Section 83(b) apply to incentive stock options (ISOs)?

A. ISOs are governed by IRC §421-§422, not §83. A §83(b) election is not directly relevant to vested ISOs because ISO holders are not taxed on exercise for regular tax purposes (only for AMT under §56). However, if an ISO is early-exercised before vesting and the resulting stock is restricted, a §83(b) election is available for the restricted stock and starts the holding periods for both the §422 ISO qualifying disposition (one year from exercise plus two years from grant) and the §1202 QSBS holding period.

How does Section 83(b) interact with Section 1202 QSBS?

A. The §83(b) election starts the §1202 five-year holding period under IRC §1202(c). Without a §83(b) election, each vesting tranche has a separate holding period, which can leave value unprotected at a fast exit. With a §83(b) election, the entire grant counts from a single date, maximizing the QSBS-eligible portion. The OBBBA of 2025 raised the §1202 exclusion cap from $10 million to $15 million and the aggregate gross assets threshold from $50 million to $75 million for stock acquired after July 4, 2025, materially increasing the value of the §83(b)/§1202 stack for new founder grants. See Section 1202 QSBS guide.

Do I send the Section 83(b) election to my employer or to the IRS?

A. Both. Reg. §1.83-2(c) requires the election to be filed with the IRS office where you file your federal income tax return (your local IRS service center). Reg. §1.83-2(d) requires you to provide a copy of the election to the person for whom the services are or were performed (typically your employer). Both must be completed within 30 days of the transfer. Many practitioners send a copy to themselves by certified mail as a third recipient to document the timing if questioned.

Is a Section 83(b) election always a good idea for founders?

A. Almost always for early-stage founder stock granted at near-zero valuations. The downside is asymmetric: if the company succeeds, the election saves substantial ordinary income tax; if the founder leaves before vesting, the small amount of tax paid on the election is unrecoverable but is typically nominal. The election becomes less obviously beneficial when the FMV at grant is high (e.g., stock granted at a Series C valuation), in which case the cash tax paid up front may not be justified by future appreciation. Late-stage employees receiving restricted stock at a high 409A valuation should run the after-tax math carefully before electing.