Payroll Glossary
What is Non-Qualified Deferred Compensation (NQDC)?
By Anthony Moretti · Updated June 2026
NQDC plans allow employees, typically executives, to defer compensation to a future tax year, but must comply with strict Section 409A rules or face immediate taxation and penalties.
Why NQDC matters for employers
Non-qualified deferred compensation plans allow employers to offer highly compensated executives and key employees an arrangement to defer receipt of compensation to a later year, reducing current income tax. Unlike 401(k) plans, NQDC plans have no contribution limits, are not subject to ERISA funding requirements, and can be customized for individual executives.
Section 409A of the Internal Revenue Code governs virtually all NQDC arrangements. Failure to comply with 409A results in immediate income taxation of all deferred amounts, a 20% excise tax on top of regular income tax, and interest at the underpayment rate plus 1%. These penalties apply to the employee, not the employer, but employers are responsible for withholding.
Section 409A requires that deferral elections be made before the year in which compensation is earned (with exceptions for first-year participants and performance-based compensation). Distributions must be triggered by one of six permissible events: separation from service, disability, death, a specified time or fixed schedule, a change in control, or an unforeseeable emergency.
For FICA purposes, deferred compensation is subject to Social Security and Medicare taxes at the time of vesting - not when actually paid. This means employers must withhold FICA on unvested amounts when they vest even if no cash is distributed, a counterintuitive but important obligation.
NQDC arrangements are unsecured promises to pay - employees are general creditors of the company, and if the company becomes insolvent, deferred compensation may be lost. This is why NQDC is typically offered to executives who can absorb this risk.
How BEG handles NQDC payroll for clients
BEG Managed Payroll tracks NQDC vesting events, calculates FICA at vesting, and manages distribution withholding as part of fully managed payroll at $25-$45 per employee per month. Learn about BEG Managed Payroll.
Frequently asked questions
What happens if a Section 409A plan fails compliance?
The employee owes income tax on all deferred amounts immediately, plus a 20% excise tax and interest. The employer must withhold these amounts, creating a large unexpected tax event.
When is FICA owed on deferred compensation?
FICA is owed when deferred amounts vest, not when they are paid out. If an executive defers compensation that vests over four years, FICA is owed each year as amounts vest even though no cash is distributed.
What are permissible distribution triggers under Section 409A?
Section 409A allows distributions only upon six events: separation from service, disability, death, a specified date or schedule, a change in control, or an unforeseeable emergency. Ad hoc distributions violate 409A.
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About the author
Anthony Moretti is VP of Sales at Business Executive Group, where he builds BEG's managed payroll and HR service verticals for employers across Dallas-Fort Worth and nationwide. He writes the BEG Payroll Glossary to give employers plain-English answers on payroll and compliance.
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