Section 83(i) Qualified Equity Grants: Tax Deferral for Private Company Employees

Executive Summary

Section 83(i) was enacted as part of the Tax Cuts and Jobs Act (TCJA) in 2017 to give private company employees a tax deferral option similar to public company employees who can sell shares to fund taxes. But the 80% requirement is stringent—and most startups don't meet it. If your employer does offer 83(i), it can defer significant federal income tax for up to 5 years.

The bottom line: 83(i) defers federal income tax only. FICA (Social Security and Medicare) is still due at vesting or exercise. When the deferral ends, you recognize income at the original vesting FMV—even if the stock has since appreciated or depreciated. The deferral can be valuable if you expect liquidity (IPO, acquisition) within 5 years and want to delay paying tax until you can sell. See our Section 83(b) guide for a different election that applies to restricted stock.¹

Critical Warning: If you defer under 83(i) and the stock later becomes worthless (company fails), you still owe income tax on the original vesting FMV when the deferral ends. You cannot deduct the loss against that income in the same way. Deferral is a bet on the company's success—weigh the risk carefully.

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How Section 83(i) Works

Eligibility: Employer Requirements

For an employer to offer 83(i) elections, it must be an eligible corporation:

Source: IRS Notice 2018-97

Excluded Employees (Cannot Elect 83(i))

Source: IRC Section 83(i)(3)(B)

Implication: Most startup founders, executives, and early employees are excluded. 83(i) is designed for rank-and-file employees at companies that grant broadly.

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Deferral Mechanics

When Deferral Ends

Tax at Deferral End

When the deferral ends, you recognize ordinary income equal to the FMV of the stock at the original vesting date—not the current value. If the stock has appreciated, you pay tax on the lower amount but have a higher cost basis for future capital gains. If the stock has depreciated, you still pay tax on the original FMV—a potential downside.

Example: You vest 1,000 RSUs at $10/share = $10,000 income. You elect 83(i). Two years later, the company IPOs at $50/share. Your deferral ends. You recognize $10,000 ordinary income (taxed at your marginal rate). Your cost basis for the shares is $10,000. When you sell at $50, you have $40,000 in capital gains.

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FICA and Withholding

FICA Is Not Deferred

Critical: 83(i) defers federal income tax only. FICA (Social Security and Medicare) is still due at vesting or exercise. Your employer must withhold FICA when the stock vests or when you exercise options.

Tax Withholding at Deferral End

When the deferral ends, the employer must withhold federal income tax at the maximum individual rate (37% for 2025-2026) on the deferred amount, treating it as a noncash fringe benefit. Employers may require you to sell shares or provide cash to cover withholding.

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Why Few Companies Offer 83(i)

Source: IRS Notice 2018-97

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83(i) vs. 83(b) vs. Standard Vesting

See our 83(b) guide for when to use that election.

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Frequently Asked Questions

Q1: Can I elect 83(i) for stock options?

Answer: Yes. Section 83(i) applies to both stock options and RSUs (and restricted stock) granted by private companies that meet the eligibility requirements. You make the election when the stock becomes substantially vested (or when you exercise options).

Source: IRC Section 83(i)(1)

Q2: Does 83(i) defer state income tax?

Answer: It depends on your state. Section 83(i) is a federal provision. Some states conform to federal income tax deferral; others do not. Check your state's tax rules or consult a tax advisor.

Source: IRS Notice 2018-97

Q3: What form do I use to file the 83(i) election?

Answer: IRS Form 4669 (Election for Qualified Equity Grant Under Section 83(i)) is used to make the election. The form must be filed with your employer within 30 days of vesting (or exercise date for options). The employer must also provide a copy to the IRS.

Source: IRS Form 4669

Q4: Can I revoke an 83(i) election?

Answer: Yes. You can revoke the election at any time. The revocation triggers immediate income recognition at the original vesting FMV. Revocation is irrevocable—you cannot re-elect.

Source: IRC Section 83(i)(2)(B)

Q5: What happens if my company goes bankrupt before the deferral ends?

Answer: If the stock becomes worthless, the deferral ends when the stock is no longer transferable or when you revoke. You still owe income tax on the original vesting FMV. You may have a capital loss on the worthless stock, but it is a capital loss (limited to $3,000 per year against ordinary income) that may not fully offset the ordinary income from the 83(i) inclusion.

Source: IRC Section 83(i)

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Action Checklist

• Ask your employer — Does your company offer 83(i) elections? Many do not.
• Check exclusion — Are you a 1% owner, CEO, CFO, or among the 4 highest-paid officers?
• Model the deferral — If you expect liquidity in 2–3 years, deferral may save tax timing.
• File Form 4669 — Within 30 days of vesting if you elect.
• Plan for FICA — Ensure you have funds for FICA withholding at vesting/exercise.

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Footnotes

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Disclaimer: This guide discusses legal tax optimization strategies only. Tax evasion is illegal. This content is for educational purposes and does not constitute tax, legal, or financial advice. Always consult a qualified tax professional before making decisions. The authors accept no liability for actions taken based on this content.

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Primary Sources

Last Updated: March 2026 | Research Team: VestingStrategy

Footnotes

1. IRC Section 83(i) was added by the Tax Cuts and Jobs Act, P.L. 115-97. IRS Notice 2018-97 provides initial guidance. ↩