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Part 19 · Chapter 1

Statutory and Nonstatutory Options, §83, and ESPPs

Law stated as of October 3, 2026 · Equity and Incentive Compensation

Scope and status

This chapter covers the §83 property-transfer baseline (including §83(b) elections and the Form 15620 electronic-filing option), nonstatutory options (NSOs), incentive stock options (ISOs) under §§421–424, and §423 employee stock purchase plans (ESPPs). These are the settled statutory frameworks of equity compensation — the traps are mechanical (deadlines, dollar limits, holding periods, modification rules), and most damage is done at grant or exercise, before counsel is consulted.

Citations are to primary authority (Code §§83, 421–424, 423, 3121(a)(22), 6039; Treas. Reg. §§1.83-1 through -8, 1.421-1 through 1.424-1, 1.423-2). Related questions are treated elsewhere: §409A doctrine (the FMV stock-right exemption, deferral rules) in Part 18 (Nonqualified Deferred Compensation, 409A, 457, and Executive Compensation); full-value awards, partnership equity, and FICA mechanics in this Part's companion chapter; and Rule 701/S-8/Section 16 and §4960 in this Part's overlays chapter.

Threshold framing. Classify the award first: (1) property now (restricted stock — §83 runs immediately, 83(b) available); (2) option — statutory (ISO/ESPP, §§421–424 override §83 if every condition holds) or nonstatutory (§83 at exercise); or (3) promise (RSU/phantom — no §83 property until settlement; companion chapter). Misclassification is the root error: an "ISO" that flunks a §422 condition is silently an NSO with missed withholding; an "RSU" treated like restricted stock generates an invalid 83(b).

Sections

The opening sections of Part A are shown in full. The other sections are listed by title; their text is available to subscribers.

Part A — The §83 Baseline

A1.The general rule

Part 19, ch. 1, § A1

When property is transferred in connection with the performance of services, the service provider recognizes ordinary income when the property is first transferable or not subject to a substantial risk of forfeiture (SRF), equal to FMV at that time minus any amount paid. Statute: Code §83(a); Final reg: Treas. Reg. §1.83-1, -3. SRF requires a real condition — future services, or a condition related to the transfer's purpose (performance goals) — and lapse restrictions (transfer restrictions alone) do not defer income; nonlapse restrictions (permanent formula-price restrictions) fix value. Final reg: Treas. Reg. §1.83-3(c), (h)–(i). For Section 16 insiders, the §16(b) short-swing profit exposure period can itself function as an SRF for up to six months post-purchase. Statute: Code §83(c)(3). The employer's deduction matches the employee's inclusion (amount and, generally, timing) if reporting requirements are met. Statute: Code §83(h); Final reg: Treas. Reg. §1.83-6.

A2.The §83(b) election — and the Form 15620/electronic-filing upgrade

Part 19, ch. 1, § A2

A recipient of unvested property may elect within 30 days of transfer (hard deadline, no extensions — but if day 30 falls on a Saturday, Sunday, or legal holiday, §7503 makes the next business day timely; Rev. Proc. 2012-29 §2.05) to be taxed at grant on the spread at transfer; appreciation thereafter is capital, and the holding period starts at grant. Consequences of electing: if the property is later forfeited, no deduction or refund for the tax paid (loss limited to any amount actually paid); if the spread at grant is zero (founder stock at par, profits-interest protective elections), the election costs nothing and is standard practice. The election is irrevocable absent IRS consent. The IRS will generally consent to a revocation requested on or before the 30-day election deadline (Rev. Proc. 2006-31). After that, consent requires a mistake of fact as to the underlying transaction, requested within 60 days of discovering it (§1.83-2(f)). Statute: Code §83(b); Final reg: Treas. Reg. §1.83-2, revocation at §1.83-2(f); Rev. Proc. 2006-31. Under §1.83-2(f), an election may not be revoked except with the consent of the Commissioner; consent is granted only where the transferee was under a mistake of fact as to the underlying transaction, and the request must be made within 60 days of the date the mistake of fact first became known. The regulation expressly excludes a mistake as to value (or a decline in value) and a failure to perform an act contemplated at the time of transfer. Practitioner reading, borne out by the letter rulings: "mistake of fact" is narrow — it must go to the basis of the transaction, e.g. the company transferred the wrong class of stock. Currency item — mechanics modernized: the IRS standardized the election on Form 15620 (Nov. 2024; Rev. 4-2025) and in 2025 opened electronic filing through the IRS website (ID.me account); paper filing to the service center remains permitted, use one method only. A copy still goes to the employer (for reporting/withholding); attachment to the filer's return is no longer required (T.D. 9779 (2016) eliminated it). Agency guidance — formal: Form 15620 and instructions; Final reg: Treas. Reg. §1.83-2(c)–(d).

  1. A3§83(i) qualified equity grants — narrow by designSubscribers

Part B — Options

  1. B1Nonstatutory options (NSOs)Subscribers
  2. B2ISOs — §422 conditionsSubscribers
  3. B3ISO taxationSubscribers
  4. B4§424 — corporate transactions and modificationsSubscribers

Part C — §423 ESPPs

  1. C1Plan requirementsSubscribers
  2. C2ESPP taxation and reportingSubscribers

The first Part of each chapter is open to everyone. The remaining sections, with their authority and practice points, are available to subscribers and to clients of ERISA Benefits Law Group, PLLC whose engagement includes access.

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