Checklist · Corporate

Founder Equity, Vesting, and the 83(b) Election: A Practical Checklist

26 U.S.C. § 83

Type: Checklist
Jurisdiction: National
Date: 2023-06-13
Topic: Corporate

Founder equity is easy to hand out and painfully hard to unwind, so getting it right in the first weeks after incorporation matters more than almost anything else a founding team does. This checklist walks through issuing founder stock early at low value, papering it with a restricted-stock purchase agreement carrying a vesting schedule and cliff, and understanding why unvested stock creates an ordinary-income tax trap under Section 83. It explains the 83(b) election that closes that trap, the unforgiving 30-day filing deadline, and the mechanics of single- versus double-trigger acceleration. It covers the option pool and its effect on the cap table, 409A valuations, the ISO/NSO distinction, and the qualified-small-business-stock (Section 1202) planning that can exempt millions in gain. Finally it addresses the two overlays every founder forgets, assigning intellectual property to the company and complying with securities law, and closes with a consolidated one-glance checklist and the primary authority.

Founder Equity, Vesting, and the 83(b) Election: A Practical Checklist

Corporate > Startup Financing | Published 13 June 2023 - Updated 9 February 2025 | UpLaw - uplaw.us

Founder stock is the cheapest thing you will ever own and the most expensive thing you will ever fix. Issue it early, subject it to vesting, elect under 83(b) within thirty days, and assign your IP to the company - or spend the next five years and a diligence cycle paying lawyers to reconstruct what a founding team could have done correctly in an afternoon.

Keywords: founder equity, vesting, 83(b) election, restricted stock, cliff, repurchase right, Section 83, 409A, ISO, NSO, QSBS, Section 1202, option pool, acceleration, IP assignment

Almost every equity problem a startup carries into its first serious financing was created, or could have been prevented, in the first sixty days after incorporation. Stock issued too late at too high a value, vesting that was never papered, an 83(b) election missed by a week, intellectual property still sitting in a co-founder's personal GitHub - each of these is trivial to get right at the start and miserable to fix later, when a term sheet is on the table and a diligence lawyer is asking questions. This checklist is organized as a sequence of phases, from splitting the equity through the securities and IP overlays, with real check items you can work through and a "why it matters, and the traps" note after each phase. Follow it alongside Incorporating a Startup the Right Way: A Founder's Legal Checklist, which covers the corporate formation steps this document assumes you have already taken.

Meet our worked example. Priya and Dean are the two co-founders of Lumen Bio, a Delaware C corporation developing a benchtop diagnostic. They have agreed to split the founding equity 55/45 in Priya's favor - she conceived the core assay and is going full-time first; Dean is joining from a salaried job three months later. They plan to authorize 10,000,000 shares and issue 5,500,000 to Priya and 4,500,000 to Dean, all subject to four-year vesting with a one-year cliff. We will follow them through every phase.

Phase 1 - Split and paper the equity early: founder stock and the cap table

[ ] Agree the founder split in principle and write it down (percentages and the reasoning) before issuing anything.
[ ] Authorize a share count in the certificate of incorporation with room to grow (10,000,000 authorized is a common baseline).
[ ] Have the board adopt resolutions authorizing the issuance of founder stock to each founder.
[ ] Issue the founder shares as restricted stock purchased under a Restricted Stock Purchase Agreement (RSPA), not as a bare grant.
[ ] Have each founder actually pay for the shares (cash, a check, or documented assignment of IP as consideration) at the low par or fair value.
[ ] Set the purchase price at a defensible, genuinely low number while the company has almost no value.
[ ] Issue stock certificates (or book-entry entries) and record every issuance on the capitalization table.
[ ] Confirm the total issued leaves room for an option pool and future investors (do not issue 100% to founders).

Why it matters, and the traps. The single most valuable feature of founder stock is timing. On day one, before you have revenue, a product, or a financing, your common stock is worth almost nothing, so a founder can buy it for a trivial price and owe no tax on the spread between price and value - because there is essentially no spread. Wait six months, close a priced round, and that same stock has a real fair market value; buying it then means paying tax on the difference, or issuing options instead with a strike price set by a formal valuation. Issue early.

Note the deliberate language above: founders purchase restricted stock; they are not simply handed it. The purchase, the payment, and the paper matter. Under Delaware law the board must authorize the issuance and the consideration must actually be received - stock issued for no consideration can be challenged as void, and DGCL §§ 151 and 218 govern the classes, rights, and voting arrangements you are creating. A cap table that shows shares "issued" with no board resolution, no signed RSPA, and no evidence anyone paid is the first thing a diligence lawyer flags. For the wider set of formation documents this sits inside, see The Startup Legal Document Stack: What Founders Need and Why.

For Lumen Bio: the board authorizes 10,000,000 shares at $0.0001 par. Priya buys 5,500,000 shares for $550; Dean buys 4,500,000 for $450. Each writes a check. Two things are now true that will save them enormous pain later: real money changed hands, and the fair market value on the purchase date was essentially equal to what they paid, so there is no taxable spread to worry about - provided the stock vests, which is the subject of the next two phases.

Phase 2 - Vesting, cliffs, and repurchase rights on unvested shares

[ ] Subject each founder's shares to a vesting schedule in the RSPA (four years is standard).
[ ] Include a one-year cliff: no shares vest until the first anniversary, then 25% vests at once, then monthly thereafter.
[ ] Give the company a repurchase right over unvested shares at the founder's original cost if the founder leaves.
[ ] Decide whether to credit prior time or start the clock at the RSPA date (and be consistent between founders).
[ ] Address what "leaving" means: voluntary resignation, termination for cause, termination without cause, death, disability.
[ ] Confirm the repurchase price for unvested shares is the original purchase price, not fair market value.
[ ] Keep vested shares out of the repurchase right (once vested, they are the founder's to keep).

Why it matters, and the traps. Vesting on founder stock is not the company controlling the founder - it is the founders protecting each other. Imagine Dean leaves Lumen Bio after five months to take a different job. Without vesting, he walks away owning 45% of the company forever, contributing nothing while Priya spends the next decade building value that Dean's dead-weight stake dilutes and complicates. Investors will refuse to fund a company with a large absentee shareholder, and Priya has no clean way to claw the equity back. With four-year vesting and a one-year cliff, Dean who leaves at month five has vested zero shares; the company repurchases all 4,500,000 at his original $450, and the cap table heals itself.

The cliff exists to protect against exactly the early-departure problem: it ensures no one who bails in the first year keeps any equity. After the cliff, monthly vesting is the norm so that a founder who stays two years keeps roughly half. Be deliberate about "for cause" definitions and about death and disability - a founder's estate keeping unvested shares is a common and awkward gap. Vesting terms interact directly with the financing documents you will negotiate later; the same repurchase and vesting concepts recur when you bring in employees and investors, discussed in Running a SAFE Financing Round: A Practical Checklist and Bringing On New Investors After the Seed Round: Navigating the First Priced Financing.

Here is the twist that makes the next phase necessary: the very repurchase right that protects the founders is, in the eyes of the tax code, a "substantial risk of forfeiture." And that turns friendly vesting into a potential tax disaster.

Phase 3 - Why vesting creates a tax problem: Section 83 and ordinary income at vesting

[ ] Understand that unvested stock subject to repurchase is not yet "vested" for tax purposes under Section 83.
[ ] Recognize the default rule: absent an election, you are taxed as the shares vest, on the spread at that time.
[ ] Appreciate that the tax is ordinary income, at your highest marginal rate, not capital gain.
[ ] Understand that a fast-growing company makes the default rule progressively more expensive each vesting date.
[ ] Confirm whether your stock is subject to a substantial risk of forfeiture (it is, if there is real vesting).
[ ] Decide - with counsel and ideally a CPA - whether to make an 83(b) election (Phase 4).

Why it matters, and the traps. This is the doctrine that surprises nearly every first-time founder, so it is worth stating plainly. Section 83 of the Internal Revenue Code (26 U.S.C. § 83) says that when you receive property in connection with performing services, you are taxed when the property is no longer subject to a substantial risk of forfeiture - in other words, when it vests. The amount you are taxed on is the fair market value of the shares at vesting minus what you paid for them. And that amount is taxed as ordinary income.

Apply that to Priya. She bought 5,500,000 shares for $550 when the stock was worth $550, subject to four-year vesting. Under the default Section 83 rule, she is not taxed at purchase - the shares are forfeitable. Instead she is taxed on each tranche as it vests. Suppose Lumen Bio raises a priced round twelve months in and the common stock is now worth $0.50 a share. At her one-year cliff, 1,375,000 shares vest. Their value is $687,500; she paid roughly $137.50 for that tranche. She now has roughly $687,000 of ordinary income on stock she cannot sell, and the numbers get worse at every subsequent monthly vesting date as the company grows. She may owe six figures in tax on paper gains with no cash to pay it.

That is the trap. The default treatment of vesting stock in a company whose value is climbing is a rolling ordinary-income event on illiquid shares. The fix is to elect out of the default - to tell the IRS "tax me now, at purchase, when the spread is zero." That election is the 83(b).

Phase 4 - The 83(b) election: mechanics and the unforgiving 30-day deadline

[ ] Decide to file an 83(b) election for each founder's restricted stock (in almost every early-stage case, yes).
[ ] Prepare the election statement following the sample in Rev. Proc. 2012-29 (name, address, taxpayer ID, description of shares, date, value, amount paid, and the affirmative statement of the election).
[ ] File it with the IRS office where you file your return, postmarked within 30 days of the purchase/grant date - not 30 days from signing something else, from the vesting-start date, or from "around then."
[ ] Send it by certified mail, return receipt requested, and keep the green card and a copy.
[ ] Provide a copy to the company for its records.
[ ] Keep a copy for your own tax records (you no longer attach it to your return, but retain proof of filing).
[ ] Calendar the deadline the day the stock is purchased, with a hard internal reminder well before day 30.
[ ] Repeat separately for each founder - one election does not cover the other.

Why it matters, and the traps. The 83(b) election is a one-paragraph document that reverses the entire tax problem in Phase 3. By electing under 26 U.S.C. § 83(b), you choose to be taxed at the time of purchase on the spread between value and price - which, if you bought early, is zero or near zero. You pay tax now (essentially nothing), and every dollar of appreciation from that point forward is treated as capital gain, taxed only when you actually sell, and eligible for long-term rates and QSBS treatment (Phase 7). You also start your capital-gains holding clock immediately.

For Priya, an 83(b) filed within 30 days of her purchase means she reports a spread of $0 today (she paid fair value), owes no tax, and never faces the rolling ordinary-income problem as her shares vest. The $687,000 phantom income at her cliff simply never happens. The election converts a potential tax catastrophe into a nonevent.

Now the trap, and it is the single most important sentence in this document: the 30-day deadline is statutory and absolute. There is no extension, no reasonable-cause relief, no "we filed it a few days late but in good faith." If day 31 arrives without a postmarked election, the opportunity is gone forever and the founder is locked into the default Section 83 treatment for the life of the vesting schedule. File by certified mail so you have a postmark and a return receipt proving the date. Count the 30 days from the date the stock was purchased or granted, not from incorporation, not from when the RSPA was drafted, not from the vesting commencement date if it differs. When in doubt, file early. A missed 83(b) is one of the most common and most painful diligence findings, discussed further in Getting Diligence-Ready Before You Raise: A Comprehensive Guide for Founders.

One more practical note: the IRS no longer requires you to attach the election to your annual return, but you must still file it within 30 days and retain proof. Do not confuse "I don't attach it to my 1040" with "I don't have to file it." You do.

Phase 5 - Acceleration (single vs double trigger) and founder departures

[ ] Decide whether any founder shares should accelerate vesting on defined events.
[ ] Distinguish single-trigger (vesting accelerates on a change of control alone) from double-trigger (acceleration only if there is a change of control and the founder is terminated without cause within a window after it).
[ ] Default to double-trigger for most founder acceleration - it is what acquirers and investors expect.
[ ] Define "change of control," "cause," "good reason," and the post-closing protection window precisely.
[ ] Decide the amount of acceleration (often 100% on a qualifying double-trigger event, sometimes 12 months).
[ ] Address what happens to vesting and repurchase rights when a founder is terminated, resigns, dies, or is disabled.
[ ] Keep acceleration terms consistent between co-founders unless there is a deliberate reason to differ.

Why it matters, and the traps. Acceleration answers the question: what happens to unvested stock when the company is sold or a founder is pushed out? Single-trigger acceleration vests some or all of a founder's stock the moment the company is acquired. Founders love it; acquirers hate it, because it lets a founder collect fully vested equity and walk away the day the deal closes, exactly when the buyer most needs the founder to stay. Double-trigger acceleration is the market-standard compromise: unvested stock accelerates only if (1) there is a change of control and (2) the founder is terminated without cause (or resigns for good reason) within, say, twelve months after it. That protects a founder who gets fired by the acquirer while preserving the retention value the buyer is paying for.

For Lumen Bio, Priya and Dean adopt double-trigger acceleration of 100% of unvested shares. If an acquirer buys the company in year three and keeps them both, their remaining shares keep vesting on schedule - no windfall, no problem. If the acquirer fires Dean without cause six months after closing, his unvested shares fully accelerate, so he is not punished for the buyer's decision. The trap here is sloppy definitions: an ambiguous "cause" clause or an undefined "good reason" turns a clean acceleration provision into litigation. Draft these terms with the same care you would a financing document, and make sure they are consistent with the change-of-control language elsewhere in your stack.

Phase 6 - The option pool, 409A valuations, and ISO vs NSO grants

[ ] Reserve an equity incentive (option) pool - commonly 10-20% of fully diluted shares - for future employees and advisors.
[ ] Understand that carving the pool out before a financing dilutes the founders, not the incoming investors ("the option pool shuffle").
[ ] Obtain a 409A valuation before granting options, to set a defensible fair market value strike price.
[ ] Refresh the 409A valuation at least every 12 months, or after any material event (financing, major contract, acquisition offer).
[ ] Grant incentive stock options (ISOs) to employees where possible (favorable tax treatment under Section 422) and nonqualified stock options (NSOs) to advisors, contractors, and others who cannot receive ISOs.
[ ] Set every option strike price at or above the current 409A fair market value.
[ ] Track the ISO $100,000-per-year vesting limit and other Section 422 requirements.
[ ] Have the board approve every grant and document it.

Why it matters, and the traps. Founder stock is purchased outright; almost everyone hired afterward gets options - the right to buy stock later at a fixed strike price. To grant options with a defensible strike price you need a 409A valuation, an independent appraisal of your common stock's fair market value. 26 U.S.C. § 409A imposes severe penalties on options granted with a strike price below fair market value (immediate income inclusion plus a 20% additional tax), so a fresh 409A is not optional bureaucracy - it is what makes your option grants safe. Refresh it annually and after any material event.

The option pool deserves a warning. Investors typically insist that a pool (or an expanded pool) be created before their money goes in, and they will size the post-money cap table to include it. Because the pool is carved out of the pre-money valuation, its dilution falls on the founders and existing holders, not the new investor - the so-called "option pool shuffle." Understand this before you negotiate a term sheet, because a larger pool at a fixed pre-money valuation is a direct transfer of value from you to the investor.

On grant type: ISOs under 26 U.S.C. § 422 offer employees favorable treatment (no ordinary income at exercise for regular-tax purposes, potential all-capital-gain outcome if holding periods are met), but they are available only to employees and carry limits, including the rule that no more than $100,000 of ISO stock can first become exercisable in any calendar year. NSOs have no such restrictions but are taxed as ordinary income on the spread at exercise; they are what you grant to advisors and contractors. Getting a clean IP and equity structure in place before you start hiring dovetails with Employee Invention Assignment Agreements: Securing Clean Title Across Jurisdictions.

Phase 7 - QSBS (Section 1202) and holding-period planning

[ ] Confirm the company is a domestic C corporation (QSBS is unavailable to LLCs and S corps).
[ ] Confirm the stock is acquired at original issuance for money, property, or services - not bought from another holder.
[ ] Confirm the company's gross assets did not exceed the statutory ceiling (historically $50 million) at and immediately after issuance.
[ ] Confirm the company is engaged in a qualified trade or business (many service businesses are excluded).
[ ] Note the five-year holding period required for the exclusion, and that an 83(b) election helps start that clock early.
[ ] Keep records establishing QSBS status from day one (asset values at issuance, the nature of the business, the issuance itself).
[ ] Coordinate QSBS planning with counsel and a tax adviser - the rules are technical and were amended in 2025.

Why it matters, and the traps. Section 1202 of the Code (26 U.S.C. § 1202) is one of the most valuable and least understood benefits available to founders. If your stock qualifies as qualified small business stock, you can exclude a large portion - historically up to 100%, subject to a per-issuer cap - of the capital gain on its eventual sale from federal tax. On a successful exit, that can mean millions of dollars of gain paid entirely tax-free. But QSBS is a creature of technical requirements: the company must be a domestic C corporation, the stock must be acquired at original issuance, the company's assets must have been under the ceiling at issuance, the business must be a qualified trade, and the founder must hold the stock for the required period (five years under the pre-2025 rules).

The connection to this checklist is direct. Buying founder stock early, at original issuance, in a C corporation, and filing an 83(b) to fix your holding start date, is exactly the fact pattern QSBS rewards. The founders who structure their equity correctly on day one are the ones who qualify; the founders who take shortcuts - incorporating as an LLC, buying stock from a departed co-founder rather than from the company, or letting the asset ceiling lapse before issuance - quietly forfeit a seven-figure benefit. Because Congress amended Section 1202 in 2025 (adjusting the holding-period tiers, the asset ceiling, and the per-issuer cap for stock issued after the effective date), confirm the current parameters with a tax adviser rather than relying on the older $50 million / five-year / $10 million figures. The choice of a C corporation over an LLC, and its downstream consequences, is discussed in Running Multiple Businesses Under One Structure: A Deep Dive into Holding, Operating, and Parent Companies.

Phase 8 - The overlays: IP assignment to the company and securities-law compliance

[ ] Have every founder sign an agreement assigning all pre-formation and ongoing work-related intellectual property to the company (a technology/IP assignment and a confidential-information-and-invention-assignment agreement).
[ ] Use the founder's IP contribution as documented consideration for the founder stock where appropriate.
[ ] Confirm no IP is left behind in a personal account, a prior employer's ownership, or a co-founder's name.
[ ] Treat the issuance of founder stock and options as a securities issuance requiring an exemption from registration.
[ ] Rely on the appropriate exemption (commonly Section 4(a)(2) / Regulation D for founder and investor issuances; Rule 701 for compensatory option grants to service providers).
[ ] Make any required state blue sky and federal filings (e.g., a Form D for a Regulation D offering).
[ ] Keep a clean record of every issuance, exemption relied upon, and filing made.

Why it matters, and the traps. Two overlays sit on top of everything above, and founders routinely forget both. First, intellectual property. The company is only as valuable as the IP it actually owns. If Priya wrote the core assay code before Lumen Bio existed, that code belongs to Priya - not the company - until she assigns it. A company that cannot show clean title to its own technology is unfinanceable; the assignment is often structured as part of the consideration a founder pays for stock, tying Phases 1 and 8 together. This is the same clean-title problem that recurs with every employee and contractor, which is why the invention-assignment discipline in Employee Invention Assignment Agreements: Securing Clean Title Across Jurisdictions matters from the first hire.

Second, securities law. Stock and options are securities, and every issuance must fit a registration exemption. Founder stock and investor rounds typically rely on Section 4(a)(2) and Regulation D; compensatory grants to employees and advisors typically rely on Rule 701. These exemptions are not automatic - they carry conditions, disclosure obligations, and filings (a Form D at the federal level and blue-sky notices at the state level). Getting this right is the same discipline you will apply when you raise outside money, covered in depth in Simple Agreements for Future Equity: An Overview of How SAFEs Actually Work, Raising Capital Legally: A Comprehensive Guide to Securities Exemptions for Startups, and the sibling Running a Regulation D Private Placement: A Securities Compliance Checklist. For the full financing arc from here forward, see the Raising Capital: A Startup Securities Toolkit.

Common Mistakes to Avoid

Missing the 30-day 83(b) deadline. There is no cure. Calendar it the day stock is purchased and file by certified mail. This is the number-one preventable founder tax disaster.
Issuing founder stock too late. Once the company has value, buying stock creates a taxable spread and forces you into options. Issue at incorporation while the value is near zero.
Skipping vesting because "we trust each other." Trust is exactly why you vest: it protects the founders who stay from the one who leaves. A large unvested departed-founder stake can make the company unfinanceable.
Granting stock without payment or board authorization. Under Delaware law, consideration must be received and the board must authorize the issuance. "Issued" shares with no RSPA, no check, and no resolution are a diligence failure.
Granting options without a current 409A. A below-fair-market strike triggers Section 409A penalties. Get a valuation before you grant, and refresh it annually.
Ignoring the option pool shuffle. A pool carved out pre-money dilutes founders, not investors. Understand its effect before you sign a term sheet.
Forgetting the IP assignment. Technology in a founder's personal name or a prior employer's ownership is not the company's. Assign everything at formation.
Treating stock issuances as if securities law does not apply. Every issuance needs an exemption and often a filing. Missing Form D or blue-sky notices is a common, fixable-but-embarrassing gap.
Incorporating as an LLC and losing QSBS. QSBS requires a C corporation and original-issuance stock. The entity choice you make on day one determines whether millions of gain can be tax-free.
Inconsistent or vague acceleration and "cause" definitions. Ambiguity here turns an exit or a departure into litigation. Draft precisely and keep co-founders consistent.

The Consolidated One-Glance Checklist

Issue and paper the equity

[ ] Founder split agreed and documented
[ ] Board resolutions authorizing issuance
[ ] Restricted Stock Purchase Agreement signed by each founder
[ ] Founders actually pay for shares at low fair value
[ ] Certificates issued; cap table updated
[ ] Room left for option pool and investors

Vesting and departures

[ ] Four-year vesting with one-year cliff in each RSPA
[ ] Company repurchase right over unvested shares at cost
[ ] Cause / good reason / death / disability addressed
[ ] Double-trigger acceleration with precise definitions

Tax

[ ] Understand Section 83 default (ordinary income at vesting)
[ ] 83(b) election prepared per Rev. Proc. 2012-29
[ ] 83(b) filed within 30 days, certified mail, receipt kept
[ ] Copy to company; copy retained by founder
[ ] QSBS eligibility confirmed and documented (C corp, original issuance, asset ceiling, qualified business)

Options and pool

[ ] Option pool reserved (10-20%)
[ ] Current 409A valuation obtained; refresh annually
[ ] ISOs to employees / NSOs to others; strikes at or above FMV
[ ] Every grant board-approved and documented

Overlays

[ ] IP assignment signed by every founder; no orphaned IP
[ ] Securities exemption identified for each issuance
[ ] Form D and blue-sky / Rule 701 filings made
[ ] Clean issuance and exemption records retained

Primary Authority

26 U.S.C. § 83 - property transferred in connection with the performance of services; taxation at vesting absent an election.
26 U.S.C. § 83(b) - election to include the value of restricted property in income at the time of transfer rather than at vesting; 30-day filing requirement.
Rev. Proc. 2012-29 - IRS sample form and guidance for making a Section 83(b) election.
26 U.S.C. § 409A - nonqualified deferred compensation; penalties for options granted below fair market value, underpinning the need for a 409A valuation.
26 U.S.C. § 422 - incentive stock options; eligibility, the $100,000 annual limitation, and holding-period requirements.
26 U.S.C. § 1202 - exclusion of gain on qualified small business stock (as amended in 2025); C-corporation, original-issuance, asset-ceiling, qualified-business, and holding-period requirements.
Delaware General Corporation Law §§ 151, 218 - classes and rights of stock, and voting-trust/voting-agreement arrangements, governing the equity structure created at issuance.

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This checklist is general legal information from UpLaw (uplaw.us), not legal advice, and does not create an attorney-client relationship. Tax and securities rules - including Section 1202, 409A valuation practice, and state blue-sky requirements - change and turn on specific facts; verify current requirements and consult qualified legal and tax counsel before acting.