Section 409A: Rules for Deferred Compensation Plans
The rules any promise to pay compensation later must follow, the exceptions that keep bonuses and options outside them, and the penalty when a plan gets it wrong.
Reviewed by the Fairlight Accounting cross-border tax team — U.S. & Canadian Tax Desks
Section 409A governs any arrangement where an employee or contractor earns compensation in one year and has a binding right to receive it later — deferred bonuses, phantom stock, severance promises. The plan must fix when the money is paid, timing cannot be accelerated, and a failure taxes the deferred amounts immediately with a 20 percent penalty and interest.
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What does the rule require?
| Requirement | Rule |
|---|---|
| Written plan | Terms documented before the deferral begins |
| Election timing | An election to defer must generally be made before the year the services are performed |
| Payment events | Only on a fixed date or schedule, separation from service, death, disability, change in control, or unforeseeable emergency |
| No acceleration | Payment cannot be moved earlier |
| Delaying payment | Allowed only by an election that cannot take effect for 12 months, is made at least 12 months before a scheduled fixed-date payment, and pushes payment at least five years later (except payments on death, disability, or unforeseeable emergency) |
| Specified employees of public companies | Six-month delay after separation |
What is outside the rules?
- Short-term deferrals. Amounts paid by the 15th day of the third month after the end of the year in which they vest (measured by the later of the employee's or the employer's tax year) — for calendar-year taxpayers, the ordinary year-end bonus paid by March 15.
- Qualified plans. 401(k), pension, and similar plans.
- Stock options and stock appreciation rights granted at fair market value on the grant date with no other deferral feature.
- Restricted stock (property transferred under Section 83).
- Certain severance paid on an involuntary separation by the end of the second year after the year of separation, up to two times the lesser of the employee's annualized pay or the qualified-plan compensation limit ($360,000 for 2026, a $720,000 cap; $350,000 and $700,000 for 2025).
- Reimbursements and in-kind benefits that follow specific timing rules.
Why does it drive startup option valuations?
An option granted below fair market value is deferred compensation that violates the rules because the employee controls when to exercise. Private companies therefore obtain an independent appraisal — the "409A valuation" — to set the exercise price, with a presumption of reasonableness — the valuation safe harbor — if the appraisal's valuation date is no more than 12 months before the grant and no later material information makes it stale.
Where do small businesses run into it?
Promising a key employee a payout "when we sell the company" without defining a change in control; letting an owner decide each year when a deferred bonus is paid; phantom stock plans with discretionary payment; severance agreements renegotiated at separation; and bonus plans that defer payment beyond March 15 without a compliant document.
What is the penalty?
All vested deferred amounts under the plan (and similar plans) become taxable in the year of the failure, plus a 20 percent additional tax and interest at the underpayment rate plus one percentage point from the year the amount was first deferred or, if later, vested. The burden falls on the employee, which is why employees ask for 409A compliance in their agreements.
Frequently asked questions
Does Section 409A apply to independent contractors?
Yes, with a limited exception for contractors actively in business who provide significant services to two or more unrelated clients — not available for management services.
Can a plan be corrected?
The IRS has correction programs — Notice 2008-113 for operational failures and Notice 2010-6 for document failures — that limit the penalty if the error is caught and fixed early.
Does a profits interest in an LLC fall under 409A?
Profits interests that meet the IRS safe harbor are generally treated like property, outside the rules.
Is a deferred compensation plan deductible to the company?
Only when the compensation is paid and included in the employee's income.
Official sources
The IRS explains: “The amounts are also subject to an additional 20% income tax and a second tax based on an imputed underpayment of interest referred to as the “premium interest tax”. The premium interest tax is computed based on the taxable year in which the amount was initially deferred or, if later, the first taxable year in which the amount vested.” — Internal Revenue Service, Publication 5528, Nonqualified Deferred Compensation Audit Technique Guide, https://www.irs.gov/pub/irs-pdf/p5528.pdf
The regulation provides: “A deferral of compensation does not occur under a plan with respect to any payment (as defined in § 1.409A-2(b)(2)) that is not a deferred payment, provided that the service provider actually or constructively receives such payment on or before the last day of the applicable 2 1/2 month period.” — Legal Information Institute, Cornell Law School, 26 CFR § 1.409A-1 - Definitions and covered plans., https://www.law.cornell.edu/cfr/text/26/1.409A-1
Next step
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