409A Final Regulations on Nonqualified Deferred Compensation

The final regulations under Section 409A of the Internal Revenue Code govern how nonqualified deferred compensation arrangements must be written, when participants can elect to defer, when the money can be paid out, and what happens when any of those requirements is missed. A single misstep pushes the entire vested deferred balance into current income for the participant and adds a flat 20% penalty tax on top, plus premium interest running back to the year the compensation was first deferred.¹ The rules reach much further than executive retirement plans: severance agreements, bonus deferrals, phantom stock, and many equity awards are all in scope.

What Counts as Nonqualified Deferred Compensation

The trigger for 409A is simple. Any plan, agreement, or informal arrangement that gives a worker a legally binding right to compensation payable in a tax year after the year the services are performed is nonqualified deferred compensation.¹ The business reason for the delay does not matter. Executive bonus plans, supplemental retirement plans, phantom stock, and many severance arrangements all fit the definition.

The Short-Term Deferral Exception

An arrangement that requires payment by March 15 of the year after the compensation vests is treated as current pay and sits entirely outside 409A. None of the election timing, payment event, or anti-acceleration rules apply. The March 15 deadline is firm. If the plan document allows payment even one day later, the exception is lost and the full regulatory framework applies from the beginning.

Plans That Are Excluded

Qualified retirement plans, including 401(k), 403(b), and defined benefit plans under Section 401(a), are excluded because they follow their own funding and distribution rules.¹ Section 457(b) eligible deferred compensation plans and Section 415(m) excess benefit plans are also outside 409A. Bona fide vacation leave, sick leave, compensatory time, disability pay, and death benefit arrangements are excluded as well, provided the participant cannot elect to take cash in place of actually using the leave.

The Severance Safe Harbor

Severance arrangements that pay only on involuntary separation can qualify for their own exemption, but both of two limits must hold. Total payments cannot exceed twice the lesser of the employee’s prior-year compensation or the Section 401(a)(17) annual compensation limit, which is $360,000 for 2026. And all payments must be completed by the end of the second calendar year after the year of separation. Break either limit and the entire arrangement is inside 409A from the date of the original agreement.

When Deferral Elections Must Be Made

The regulations are strict about timing. The decision to push compensation into a future year has to be locked in before the participant knows whether the compensation will actually be earned.

The Prior-Year Rule

For most salary and bonus deferrals, the election has to be irrevocable no later than December 31 of the year before the services are performed.² To defer a 2026 bonus, the election had to be final by December 31, 2025. A plan can allow changes right up to that deadline, but once the year turns over, the election is set.

Performance-Based Compensation

Compensation that depends on performance goals measured over at least 12 consecutive months gets a longer window. The election can be made as late as six months before the end of the performance period, provided the outcome is still genuinely uncertain when the election is filed.³ The performance criteria must be established in writing within 90 days after the performance period begins. Subjective goals count, but only if the person evaluating performance is not the participant or under the participant’s control.

Newly Eligible Participants

Someone becoming eligible for a plan for the first time has 30 days from the eligibility date to make an initial deferral election.² The election covers only compensation earned for services after the election date. Compensation already earned cannot be reached retroactively.

Changing an Election Already in Place

Once a deferral election is set, changing the payment date or the form of payment requires clearing two hurdles. The new election has to be made at least 12 months before the originally scheduled payment date, and the new payment date has to be at least five years later than the original.² Neither requirement applies when payment is triggered by death, disability, or an unforeseeable emergency.

The combined effect is substantial. If a payment is scheduled for January 1, 2027, any change has to be filed by January 1, 2026, and the new date cannot fall before January 1, 2032. The design keeps participants from timing distributions around year-to-year tax rate changes.

When Deferred Compensation Can Be Paid

Payment can only occur when one of six specified events happens, and the plan document has to identify which events apply at the time of the deferral election. Paying on any other basis is a violation.

The six permissible triggers are:⁴

Separation from service, meaning a genuine end to the working relationship. A reduction in services to 20% or less of the average level over the prior 36 months generally counts.³
A specified date or fixed payment schedule, objectively determinable when the deferral is elected.
A change in control of the corporation, defined by the regulations as a change in ownership, a change in effective control, or a change in ownership of a substantial portion of assets. The plan must state which type qualifies.
Disability, meaning an inability to engage in substantial gainful activity because of a medically determinable condition expected to last at least 12 continuous months or to result in death.
Death.
An unforeseeable emergency, meaning a severe financial hardship from an unexpected illness, accident, or property loss that cannot be met by stopping deferrals or drawing on other assets. Payment is limited to the amount needed.

The Six-Month Delay for Specified Employees

When a specified employee at a publicly traded company separates from service, any deferred compensation triggered by that separation has to be held for six months before payment can start.¹ A specified employee is a key employee under Section 416(i), which generally captures officers whose annual compensation exceeds an annually adjusted threshold plus significant owners. The delay has to be written into the plan document. If the employee dies during the waiting period, payment goes to the beneficiary right away. The delay does not apply to payments triggered by death, disability, or a change in control.

Lump Sum or Installments

The form of payment has to be fixed when the initial deferral election is made. If installments are chosen, the number and frequency have to be spelled out. A later change to the form of payment is governed by the same subsequent-election rules as a change in timing: 12 months’ notice and a five-year push. That closes the door on watching market conditions and swapping between a lump sum and installments right before retirement.

The Anti-Acceleration Rule

Section 409A prohibits accelerating the time or schedule of any payment beyond what the plan document already specifies.⁴ It is one of the most commonly violated rules, often by employers trying to be helpful: paying out a departing executive early, or settling a deferred balance as part of a release agreement.

Indirect acceleration counts too. If an employer pays a separate bonus, adds a benefit, or forgives an obligation in a way that substitutes for or offsets a deferred amount, the regulations treat that as a distribution of the deferred compensation itself.⁵ The same result follows if the participant’s right to deferred compensation is pledged, assigned, or made available to creditors.

A narrow set of exceptions exists. Certain permitted plan terminations allow early payout, including terminations following a change in control, during the employer’s insolvency, or under specific conditions requiring all participants in the same category to be cashed out at once. Waiving a vesting condition is not itself an acceleration, provided the resulting payment still lands on a permissible payment event. Shortening a 10-year vesting period to five years is fine if the plan already calls for payment at separation from service, but the payment date itself cannot be moved up.

Stock Options, SARs, and RSUs

Equity awards represent a right to future value, which fits the broad definition of deferred compensation. The regulations carve out specific exemptions, but the conditions are tight and easy to lose.

Stock options and stock appreciation rights are exempt if two conditions hold: the exercise price is never less than the fair market value of the underlying stock on the grant date, and the award has no feature letting the holder defer delivery of shares after exercise. If the exercise price is set even slightly below fair market value, the option is treated as deferred compensation from the date of grant, and 409A applies to the whole arrangement.

Modifications to existing options carry real risk. Extending the exercise period or reducing the exercise price can be treated as the grant of a new stock right.⁶ If the deemed new grant has an exercise price below current fair market value, the option loses its exemption back to the original grant date. Repricing underwater options or extending post-termination exercise windows needs a close look before the change is made.

For private company stock, the regulations provide safe harbor valuation methods that create a presumption of reasonableness: an independent appraisal completed within the previous 12 months, a formula price used consistently for all transfers of the stock, or, for illiquid startup stock, a valuation by someone with significant knowledge and experience in business valuation. Using a safe harbor shifts the burden to the IRS to prove the valuation was unreasonable; without one, the company has to prove its valuation was correct.

Restricted stock units are a fixed right to receive stock or cash on a future date, so they are inherently deferred compensation. The cleanest path out of 409A is to structure the RSU so that shares are delivered no later than March 15 of the year after vesting, catching the short-term deferral exception. If the RSU instead pays on separation from service or another 409A event, the full deferral election and payment timing rules apply.

What Happens When a Plan Fails

Penalties fall on the participant, not the employer, and they are cumulative.

All compensation deferred under the plan for the current year and all prior years becomes immediately taxable in the year of the violation, to the extent it is vested and has not already been included in income. The tax is owed even though the participant has received no cash. On top of ordinary income tax, there is a flat 20% additional tax on the same amount. The IRS also charges premium interest at the federal underpayment rate plus one percentage point, running from the year the compensation was first deferred (or vested, if later) through the year of the violation.¹ The underpayment rate itself is the federal short-term rate plus three percentage points.⁷ On deferrals in place for many years, the interest piece alone can be large.

How Far a Violation Spreads: Plan Aggregation

The regulations group each participant’s deferred compensation into categories, and all plans in the same category are treated as a single plan for penalty purposes.³ The nine categories are elective deferral account balance plans; non-elective account balance plans, including employer match; nonaccount balance plans such as supplemental retirement plans; separation pay plans; in-kind benefit and reimbursement plans; split-dollar life insurance plans; foreign earned income plans; stock right plans; and any other plan not fitting one of the preceding categories.⁵

The effect is severe. If an executive is in two elective deferral account balance plans and one violates 409A, the balances in both become immediately taxable and penalized. A violation in a separation pay plan does not reach an unrelated account balance plan, because they sit in different categories. Knowing which category each arrangement occupies is what limits the damage from any single failure.

Employer Reporting and Withholding

The employer reports the taxable amount in box 1 of Form W-2 and separately in box 12 with code Z.⁸ Amounts included under 409A are wages for income tax withholding, so the employer owes withholding on money the participant may never have actually received in cash.⁹

Fixing a 409A Failure

The IRS has issued guidance that allows certain failures to be corrected with reduced or eliminated penalties. Two notices carry most of the weight.

Operational Failures

Notice 2008-113 covers plans whose documents comply with 409A but whose actual operation does not: a payment made too early, a missed deferral, an excess deferral amount.¹⁰ The available relief depends on how quickly the failure is caught. A failure corrected in the same tax year it occurred generally avoids any income inclusion or penalty. A failure corrected in the following tax year can receive partial relief for rank-and-file employees, but corporate insiders such as officers and directors face stricter conditions and may still owe tax on part of the corrected amount. Failures involving limited dollar amounts and failures caught but not corrected within the same or following year have their own procedures with progressively less generous relief. Detailed reporting to the IRS is a condition of any correction.

Document Failures

Notice 2010-6 covers plans whose written document contains noncompliant language, such as missing the required six-month delay for specified employees or listing an impermissible payment trigger.¹¹ If the flawed language did not actually affect plan operations within one year after the fix, the correction can be made without income inclusion or penalties. If operations were affected, the relief is narrower and may require partial income inclusion.

Neither notice offers blanket amnesty. Each requires the employer to identify the specific failure, correct it within a prescribed window, and file detailed documentation. An employer that spots a 409A problem and does nothing is in a far worse position than one that acts promptly under the correction framework. For plans with meaningful deferred balances, engaging tax counsel at the first sign of trouble is the most cost-effective response available.

1
Office of the Law Revision Counsel. 26 USC 409A – Inclusion in Gross Income of Deferred Compensation Under Nonqualified Deferred Compensation Plans
2
eCFR. 26 CFR 1.409A-2 – Deferral Elections
3
eCFR. 26 CFR 1.409A-1 – Definitions and Covered Plans
4
eCFR. 26 CFR 1.409A-3 – Permissible Payments
5
Federal Register. Application of Section 409A to Nonqualified Deferred Compensation Plans
6
eCFR. 26 CFR 1.409A-6 – Application of Section 409A and Effective Dates
7
Office of the Law Revision Counsel. 26 USC 6621 – Determination of Rate of Interest
8
Internal Revenue Service. 2026 General Instructions for Forms W-2 and W-3
9
Internal Revenue Service. Notice 2005-1 – Guidance Under Section 409A of the Internal Revenue Code
10
Internal Revenue Service. Notice 2008-113 – Relief and Guidance on Corrections of Certain Failures Under Section 409A
11
Internal Revenue Service. Notice 2010-6 – Relief and Guidance on Corrections of Certain Failures of a Nonqualified Deferred Compensation Plan to Comply With Section 409A(a)