What is substantial risk of forfeiture?

It exists when rights to property are conditioned on future performance or events—such as repurchase rights if employment ends before vesting—so income may be deferred under Section 83 until the risk lapses.

How does Revenue Ruling 2007-49 help employees?

It illustrates IRS thinking on when early-exercised option shares remain at risk and how Section 83 timing interacts with repurchase features—useful context for early exercise programs.

Does Rev. Rul. 2007-49 replace my stock agreement?

No. It is authority for specific facts. Your grant documents and actual forfeiture mechanics control, alongside Section 83 and regulations.

Do I need an 83(b) election if I early exercise?

Often yes if you want to accelerate income recognition to grant FMV—if eligible—rather than waiting until vesting. You must file within 30 days of transfer.

Are ISO rules the same as Section 83 timing?

No. ISO holding periods and AMT adjustments are separate statutory regimes. You can have Section 83 wage timing questions and ISO AMT issues in the same year.

Where can I read the ruling?

See the IRS Internal Revenue Bulletin entry for Revenue Ruling 2007-49 or the IRS website copy linked from professional tax libraries.

Revenue Ruling 2007-49: Section 83 and Substantial Risk of Forfeiture (Explained)

Key Takeaways

Substantial risk of forfeiture can exist when an employer may repurchase unvested shares at cost if employment ends

Section 83 generally taxes the spread at vesting unless 83(b) is timely filed for eligible property

Revenue rulings are IRS positions on specific fact patterns—use them with professional advice

Early exercise of options often pairs with restricted stock mechanics—coordinate ISO holding periods separately

Keep repurchase agreements and board approvals to document transfer dates

Executive Summary

Quick Answer

What does Revenue Ruling 2007-49 say?

It addresses when stock acquired by exercising a nonqualified stock option remains subject to substantial risk of forfeiture because the shares are restricted and may be repurchased if the employee leaves before vesting. In the ruling’s facts, that risk means Section 83 does not tax the full value at exercise—tax timing follows the forfeiture rules unless a valid 83(b) election is made. The ruling helps distinguish when deferral applies versus immediate wage inclusion.

Source: IRS Revenue Ruling 2007-49

Startup employees who early exercise often receive restricted stock with a repurchase right. That pattern sits at the intersection of Section 83, option plan rules, and sometimes ISO holding periods. Rev. Rul. 2007-49 is a key IRS illustration.

The bottom line: Do not assume exercise taxation is finished when your broker confirms shares—ask whether forfeiture risk still exists and whether an 83(b) was filed. See also Early Exercise Strategies and How to File an 83(b) Within 30 Days.

Section 83 Basics (Refresher)

Under Section 83, you generally include in income the excess of FMV over amount paid when substantial risk of forfeiture lapses—or earlier if you make a Section 83(b) election.¹

Concept	Meaning
Transfer	You received property in connection with services
Substantial risk of forfeiture	Forfeit if conditions (e.g., employment) fail
83(b) election	Pay tax early on FMV at transfer; not available for all awards

What Rev. Rul. 2007-49 Illustrates

The ruling walks through NQSO exercise into restricted stock where the employer may repurchase at the exercise price if employment terminates before vesting. The IRS discusses whether substantial risk of forfeiture exists under Treas. Reg. §1.83-3(c) and when income is recognized.²

Employee takeaway: If your shares can be clawed back on termination below market value treatment in the agreement, Section 83 analysis may defer ordinary income recognition—unless you elected otherwise.

Interaction With ISO Rules

ISOs have separate statutory holding rules under IRC §422. An early exercise may start clocks for capital gains treatment, but disqualifying dispositions and AMT can still apply—280G aside, ISO vs NSO matters for AMT at exercise.³

Do not mix Section 83 wage timing with ISO AMT modeling without a professional—both can apply in the same year.

Practical Document Checklist

Stock purchase / early exercise agreement — repurchase price and vesting schedule
83(b) election proof (if filed) — IRS mailing evidence
Board approval and 409A report date supporting FMV
Payroll communications for any wage withholding at vest lapses

Footnotes

Disclaimer: Revenue rulings are authority for their specific facts. Your grant may differ. This is educational content—not tax advice.

IRC §83(a)–(b); see regulations for property definitions. ↩
Rev. Rul. 2007-49; always read the full ruling and updates. ↩
See AMT Planning for Stock Options. ↩