Section 409A Severance Rules: Exemptions, Delays, and Penalties

Severance pay is governed by Section 409A of the Internal Revenue Code whenever it qualifies as nonqualified deferred compensation, and the Section 409A severance rules either exempt the arrangement outright or subject it to strict timing, documentation, and distribution requirements. Two exemptions do most of the work: the short-term deferral rule and the involuntary separation pay safe harbor. If neither fits, the full 409A framework applies, and the penalties for getting it wrong land on the employee, not the employer.¹

The Short-Term Deferral Exemption

The cleanest way to keep severance outside 409A is to pay it quickly. A payment is exempt under the short-term deferral rule if the employee receives it by the later of two dates: 2½ months after the end of the employee’s tax year or 2½ months after the end of the employer’s tax year in which the right to the payment vests.² For a calendar-year employee and calendar-year employer, both deadlines fall on March 15 of the year after vesting. Pay the whole severance amount before that date and 409A is not in the picture.

The Involuntary Separation Pay Safe Harbor

When severance is too large or too extended for the short-term deferral rule, the involuntary separation pay safe harbor is the second escape hatch. Two conditions must both be satisfied.

First, the total severance cannot exceed two times the lesser of the employee’s annualized prior-year compensation or the annual compensation limit under Section 401(a)(17).² For 2026, the 401(a)(17) limit is $360,000, which puts the safe harbor’s absolute ceiling at $720,000.³ An employee who earned $500,000 in the prior year does not get two times $500,000. They get two times $360,000, because $360,000 is the smaller figure. Someone earning $200,000 gets two times $200,000, or $400,000, since prior compensation is the lesser amount in that case.

Second, all payments must be completed by the end of the second calendar year following the year of separation. Run past that deadline and the safe harbor is gone.

The safe harbor is also limited by how the employment ended. It applies only to involuntary terminations and to voluntary separations under a window program lasting no more than 12 months. Involuntary means the employer unilaterally ended the relationship.² A resignation offered up by the employee, outside any window program, does not qualify.

Good Reason Resignations

Executive agreements often let the employee resign “for good reason” and still collect severance. The regulations treat these as involuntary separations if the triggering conditions involve a material negative change imposed by the employer, such as a significant pay reduction, a demotion in duties or authority, or a required relocation. The agreement must also require the employee to notify the employer and give a reasonable opportunity to cure before the resignation takes effect.² A vague good-reason clause that lets the employee walk for almost anything will not qualify the arrangement as involuntary.

When a Separation from Service Actually Occurs

Every 409A payment tied to a departure depends on whether a “separation from service” has happened under the regulations. It is not simply the date on the resignation letter.

The general test looks at anticipated future service compared to the average over the preceding 36 months. If the anticipated level drops permanently to 20% or less of that average, a separation has occurred. If it stays above 50%, the regulations presume no separation. Between 20% and 50%, the answer depends on the facts.² This matters most when someone shifts to consulting after leaving a full-time role. Consulting at 60% of the prior workload means no separation, and no 409A-triggered payment can be made.

A person who provides services as both an employee and an independent contractor must separate in both capacities. Leaves of absence do not trigger a separation unless they exceed six months and the employee has no contractual or statutory right to return; if the leave runs longer without a reemployment right, the employment relationship is treated as terminated on the first day after the six-month mark.²

Getting this date right is not a formality. It starts the clock for the specified employee delay, the safe harbor payment deadline, and every other timing rule in the agreement.

The Six-Month Delay for Specified Employees

Deferred compensation paid to a “specified employee” of a publicly traded company on account of separation cannot be paid for six months after the separation date.¹ The delay applies only to amounts that are actually 409A deferred compensation. Payments that fit the short-term deferral rule or the involuntary separation pay safe harbor are exempt and can be paid on their normal schedule.

A specified employee is a key employee of a company whose stock is publicly traded. The most common category is an officer among the 50 highest-compensated officers who earns more than the Section 416(i)(1)(A)(i) threshold, which is $235,000 for 2026.³ Other categories include 5% owners and 1% owners earning above $150,000.

Employers identify their specified employees annually. The default identification date is December 31, and the resulting list takes effect the following April 1. An employee who meets the key employee definition at any point during the 12 months ending on the identification date is a specified employee for the next 12-month effective period, and stays on the list until the next update even if compensation drops in the meantime.

Operationally, no covered payment is made during the six months after separation. On the first day of the seventh month, the employer usually issues a lump-sum catch-up covering everything that would have been paid during the wait, and the remaining schedule proceeds as originally set. If the employee dies during the waiting period, the delay ends and payment can go to the beneficiaries.

Anti-Acceleration Rule

Section 409A prohibits speeding up the timing or schedule of deferred compensation payments beyond what the plan specified at the outset.¹ Once installments are scheduled, the employer cannot decide midstream to pay out the remaining balance early, even if both sides want that outcome.

The Treasury Regulations recognize a short list of exceptions:⁴

Payments made to comply with a qualified domestic relations order, such as in a divorce.
Acceleration to cover FICA taxes owed on the deferred compensation and related income tax withholding.
Small balance cashouts when the total remaining under the plan falls below the annual 401(k) deferral limit; the employer can force a lump-sum payout and close the arrangement.
Payments needed by federal executive branch officers or employees to comply with government ethics agreements or conflict-of-interest laws.
Acceleration to the extent compensation becomes includible in income because of a 409A violation.

Outside these categories, the schedule locked in at the time of the original agreement controls. Treat the initial schedule as permanent.

Change-in-Control Severance

Severance triggered by an acquisition or merger raises separate 409A questions. A change in control is a permitted distribution event only if the transaction meets one of three regulatory definitions: a change in corporate ownership, a change in effective control, or a change in ownership of a substantial portion of the corporation’s assets.¹ An agreement can use a stricter definition, but not a looser one.

The practical split is between single-trigger and double-trigger arrangements. A single-trigger provision pays severance upon the change in control itself, whether or not the employee loses the job. Because the change in control is the actual payment event, its definition has to match 409A’s requirements exactly. A double-trigger provision pays severance only if the employee also separates from service after the change in control. In that structure the real payment trigger is the separation, so the change-in-control definition in the agreement does not need to meet 409A’s tests. Double-trigger arrangements are more common and easier to administer.

Exempt Benefits Inside Severance Packages

Severance packages routinely bundle more than cash. Continued health coverage, outplacement, and expense reimbursements can stay outside 409A when specific conditions are met.

Reimbursement arrangements are exempt when eligible expenses in one year do not affect what is available in another year, and reimbursement is made by the end of the year following the year the expense was incurred. Outplacement and moving expense reimbursements get more time: expenses must be incurred by the end of the second year after separation, and reimbursement must occur by the end of the third year after separation. Payments under fully insured medical reimbursement plans are exempt, so employer-funded COBRA continuation coverage typically stays outside 409A.

If the total value of all in-kind benefits and reimbursements under a separation arrangement stays at or below $5,000 in any given year, the whole arrangement is exempt regardless of those timing rules. It is a useful backstop for modest packages.

Penalties When the Rules Are Broken

The consequences of a 409A violation fall on the employee. That asymmetry is worth pausing on, because the person with the most to lose from a badly drafted agreement is the one who did not draft it. A noncompliant arrangement produces three layers of consequences:

Immediate income inclusion. All compensation deferred under the plan for the current year and all prior years becomes taxable to the extent vested, even if the employee has not received the money.
A 20% additional tax on top of regular income tax on the amount included.
Premium interest that accrues from the date the compensation was first deferred, or first vested if later, at the federal underpayment rate plus one percentage point.

For compensation deferred years ago, the premium interest alone can be significant. Combined with regular income tax and the 20% penalty, the total hit can consume half or more of the deferred amount.

IRS Correction Programs

Two voluntary correction programs can reduce or eliminate these penalties if errors surface early. Notice 2008-113 covers operational failures, where the plan document was correct but the employer executed it wrongly, such as paying too soon or in the wrong amount. The employer must take commercially reasonable steps to keep the same failure from recurring, and the relief is unavailable if the employee’s tax return for the year of the failure is already under examination.⁵

Notice 2010-6 covers document failures, where the written plan itself violates 409A. Full relief is available if correcting the language does not change how the plan operates within the next year. Where the correction does change near-term operations, the notice limits income inclusion and additional taxes rather than eliminating them. Neither program is available for intentional failures.⁶

Drafting for Compliance

An agreement subject to 409A has to nail down every element of the payment schedule up front. The document must specify the total amount, the payment method (lump sum or installments), and the exact dates or triggering events. Language like “to be paid at a mutually convenient time” is a violation waiting to happen. The schedule must be fixed before the services are performed, or in the severance context, before the separation from service occurs.

The agreement should state whether the departing employee is a specified employee and, if so, build the six-month delay into the timeline explicitly. Publicly traded employers should reference the most recent annual identification, based by default on the December 31 identification date with an April 1 effective date.

Most severance agreements also include a release of claims, and federal law requires review periods before the release binds the employee. An individual termination requires at least 21 days to review; a group layoff or reduction in force requires at least 45 days. Both include a seven-day revocation window after signing.⁷ These periods interact with 409A timing rules. When the review period spans two calendar years, the agreement should provide that payment will not begin until the second year, so the employee cannot influence which tax year the payment falls in by choosing when to sign.

1
Office of the Law Revision Counsel. 26 U.S. Code 409A – Inclusion in Gross Income of Deferred Compensation Under Nonqualified Deferred Compensation Plans
2
eCFR. 26 CFR 1.409A-1 – Definitions and Covered Plans
3
Internal Revenue Service. 2026 Amounts Relating to Retirement Plans and IRAs
4
United States Department of the Treasury. Application of Section 409A to Nonqualified Deferred Compensation Plans
5
Internal Revenue Service. Relief and Guidance on Corrections of Certain Failures of a Nonqualified Deferred Compensation Plan to Comply With 409A(a) in Operation
6
Internal Revenue Service. Relief and Guidance on Corrections of Certain Failures of a Nonqualified Deferred Compensation Plan to Comply With 409A(a)
7
U.S. Equal Employment Opportunity Commission. Q&A – Understanding Waivers of Discrimination Claims in Employee Severance Agreements