Deferred compensation is taxed differently depending on whether the plan is qualified (a 401(k), 403(b), governmental 457(b), or traditional pension) or non-qualified (a SERP, elective deferral plan, phantom stock, or similar executive arrangement). With a qualified plan, your contributions come out pre-tax and you pay ordinary income tax only when you take distributions. With non-qualified deferred compensation, income tax is also deferred until you’re paid, but FICA is owed earlier (at vesting), and any slip in plan design can collapse the deferral and trigger immediate tax plus a 20% penalty.
Qualified Plans: Pay Tax When You Withdraw
401(k)s, 403(b)s, governmental 457(b)s, and traditional defined benefit pensions all work on the same basic timeline. Your contributions come out of your paycheck before federal income tax, the money grows without annual taxation, and you pay ordinary income tax when you take distributions.
For 2026, the contribution limit for 401(k), 403(b), and governmental 457(b) plans is $24,500. If you are 50 or older, you can add $8,000 in catch-up contributions, for a total of $32,500. A higher catch-up of $11,250 applies if you are between 60 and 63.1Internal Revenue Service. 401(k) Limit Increases to $24,500 for 2026, IRA Limit Increases to $7,500
Pull money out before age 59½ and you owe ordinary income tax plus a 10% early withdrawal penalty, unless you fit a specific exception.2Internal Revenue Service. Retirement Topics – Exceptions to Tax on Early Distributions Governmental 457(b) plans are the exception to the exception: they do not impose that 10% penalty, so early distributions are taxed as ordinary income but avoid the extra hit.3Internal Revenue Service. IRC 457(b) Deferred Compensation Plans
Roth Contributions Flip the Timing
If you use the Roth option in a qualified plan, you pay income tax on the contribution now and owe nothing on qualified distributions, including the investment growth. A distribution qualifies if it comes after you turn 59½ (or due to death or disability) and at least five tax years after your first Roth contribution to the plan.4Internal Revenue Service. Retirement Plans FAQs on Designated Roth Accounts
Starting in 2026, a SECURE 2.0 Act change forces catch-up contributions into a Roth account if your FICA wages from the sponsoring employer exceeded $150,000 in the prior year. If the plan doesn’t offer a Roth option, high earners lose catch-up contributions altogether.
Non-Qualified Deferred Compensation: Income Tax at Payout
Non-qualified deferred compensation (NQDC) exists for people who want to defer more than qualified plan limits allow. There is no contribution cap. The trade-off is that the deferred amount is just the employer’s promise to pay you later: you are an unsecured creditor, and if the company goes bankrupt, you line up behind secured creditors. A rabbi trust is sometimes used to hold the funds, but the assets stay available to the company’s general creditors. That insecurity is actually what preserves the tax deferral; if the money were truly set aside for you alone, the IRS would tax it right away as a current economic benefit.
Common NQDC arrangements include supplemental executive retirement plans (SERPs), elective deferrals of salary or bonus, phantom stock, and stock appreciation rights.
The federal income tax rule is simple on its face: you are not taxed until the compensation is actually paid. Keeping that deferral intact requires strict compliance with Section 409A of the Internal Revenue Code.5Office of the Law Revision Counsel. 26 USC 409A – Inclusion in Gross Income of Deferred Compensation Under Nonqualified Deferred Compensation Plans Section 409A requires that you make your deferral election before the year in which you earn the compensation, that the plan specify when and how you will be paid at the time of the election, and that the distribution schedule not be accelerated once set.
Distributions may only occur upon one of these events:
- Separation from service
- A fixed date or schedule chosen when you made the deferral election
- Death or disability
- A change in company ownership or control
- An unforeseeable emergency causing severe, unanticipated financial hardship
One quirk catches many executives: if you are a “specified employee” of a publicly traded company (broadly, a key employee under the top-heavy plan rules), payments triggered by separation from service must be delayed at least six months after your departure date.
What a 409A Violation Costs You
If the plan fails to meet 409A’s requirements or isn’t operated correctly, the penalties fall entirely on the employee. Every vested dollar you have deferred under the plan becomes immediately taxable, not just the current year’s deferral but all prior years’ amounts not previously taxed. On top of that, you owe a flat 20% additional tax on the amount pulled into income, plus an interest charge calculated as if you should have included the income in the year it was first deferred, using the IRS underpayment rate plus one percentage point. The combined bill from regular income tax, the 20% penalty, and accumulated interest can consume more than half of the deferred amount.
FICA Runs on a Different Clock
Social Security and Medicare taxes do not wait for payout. Under the special timing rule in Section 3121(v)(2), your deferred compensation is subject to FICA at the later of when you perform the services or when the compensation is no longer subject to a substantial risk of forfeiture.6Office of the Law Revision Counsel. 26 US Code 3121 – Definitions In plain terms, FICA comes due when the benefit vests, which can be years before any cash reaches you.
The amount subject to FICA at vesting is the present value of the future payments. For an account-balance plan, that is the account value on the vesting date. For a SERP promising a future annuity, the employer calculates the present value of the entire payment stream. The Social Security portion applies only up to the taxable wage base, which is $184,500 for 2026.7Social Security Administration. Contribution and Benefit Base If your other wages already exceed that threshold, only the 1.45% Medicare tax (and the 0.9% Additional Medicare Tax on earnings above $200,000) applies to the deferred amount.
Once FICA has been paid at vesting, a non-duplication rule prevents those dollars and their earnings from being taxed again for FICA when you eventually receive the distribution.8Internal Revenue Service. Publication 5528 – Nonqualified Deferred Compensation Audit Technique Guide That is actually an advantage. If the employer skips the special timing rule and waits to pay FICA at distribution, the entire payout including all post-vesting growth gets hit, usually raising the total payroll tax bill for both sides.
How Specific NQDC Arrangements Are Taxed
SERPs
A SERP promises a defined retirement benefit, typically a percentage of final average pay. Income tax is deferred until benefits are paid, as an annuity or a lump sum, and the full amount is taxed as ordinary income. FICA applies at vesting based on the present value of the promised benefit. Because SERPs often vest in stages, the FICA liability is often spread across multiple vesting milestones rather than hitting all at once.
Phantom Stock and Stock Appreciation Rights
Phantom stock and SARs give you the economic equivalent of owning company stock without actual shares changing hands. When the award pays out, you receive cash equal to the stock’s appreciation (SARs) or full value (phantom stock). The entire payout is taxed as ordinary income, not capital gains, regardless of how long you held the award. These arrangements fall under Section 409A, so payout triggers and timing must be fixed when the award is granted.
Section 457 Plans
Section 457 plans are available to state and local governments and tax-exempt organizations, and they come in two very different versions.3Internal Revenue Service. IRC 457(b) Deferred Compensation Plans Eligible 457(b) plans work much like a 401(k): pre-tax contributions, tax-deferred growth, ordinary income tax at distribution, with the 2026 limit of $24,500 and no 10% early withdrawal penalty.
Ineligible 457(f) plans work very differently. Compensation deferred under a 457(f) plan is taxed in the first year it is no longer subject to a substantial risk of forfeiture, even if you have not yet received a dime.9Office of the Law Revision Counsel. 26 USC 457 – Deferred Compensation Plans of State and Local Governments and Tax-Exempt Organizations Income tax hits at vesting, not at distribution, so 457(f) is a poor long-term deferral vehicle unless the forfeiture risk extends close to the intended payout date.
State Taxes When You Move
Federal deferral does not guarantee state deferral. Executives who retire and move to a no-income-tax state sometimes find their former state still claims a right to tax NQDC payouts. Under federal law, states generally cannot tax the retirement income of nonresidents, but NQDC payments only get that protection if they are paid as substantially equal periodic payments over your life expectancy or at least 10 years, or if the plan exists solely to provide benefits above qualified plan limits (an excess benefit plan). Lump sums and payments over shorter periods can be taxed by the state where you earned the compensation, even after you leave. If you worked in multiple states during the deferral period, each may claim a share. Sort this out with a tax advisor before you finalize distribution elections.
What Happens When You Die
Deferred compensation payable after death does not escape income tax. It is treated as income in respect of a decedent under Section 691, so the beneficiary who receives the payments owes ordinary income tax on every dollar, just as you would have.10Office of the Law Revision Counsel. 26 US Code 691 – Recipients of Income in Respect of Decedents There is no stepped-up basis.
The deferred amount is also included in the decedent’s estate for estate tax purposes, which can produce a double tax. Section 691(c) offers partial relief: the beneficiary can take an income tax deduction for the portion of estate tax attributable to the deferred compensation. It does not eliminate the double tax, but it softens the hit on large balances.
Withholding at Payout
NQDC distributions are treated as supplemental wages for federal income tax withholding. The employer withholds a flat 22%. If your total supplemental wages from that employer exceed $1 million in the calendar year, the rate jumps to 37% on the excess.11Internal Revenue Service. Publication 15 (2026), (Circular E), Employers Tax Guide State withholding typically applies on top. Because 22% often falls short of your real marginal rate, a large NQDC distribution can leave you with a balance due at filing. Estimated tax payments during the distribution year can prevent an underpayment penalty.