MassMutual Deferred Compensation Plan: Elections, Taxes, and 409A

A MassMutual deferred compensation plan is a nonqualified arrangement that lets highly paid employees postpone part of their salary, bonus, or commissions, and delay the federal and state income tax on that money until it is actually paid out, usually years later in retirement. The trade-off is real: unlike a 401(k), the balance you build up is not held in trust for you alone, and every election you make about when to defer and how to be paid is locked in by Internal Revenue Code Section 409A.¹ The tax deferral is valuable. The penalties for getting the mechanics wrong are harsh.

What Kind of Plan You Have

MassMutual generally administers two types of nonqualified deferred compensation (NQDC) plans. An elective deferral plan lets you choose to set aside a percentage of your salary, bonus, or commissions. A Supplemental Executive Retirement Plan (SERP) is funded entirely by the employer and typically pays a formula-based benefit at retirement. Some employers offer both, so you may be building a balance from your own paycheck deferrals while also accruing an employer-funded retirement supplement.

The distinction matters for vesting. Money you defer from your own pay is normally vested immediately, because you already earned it. Employer contributions through a SERP often carry a vesting schedule that requires you to stay employed for a set number of years, and the unvested portion is forfeited if you leave early. Some plans also include post-employment forfeiture triggers, such as a noncompete clause that cancels your balance if you join a competitor within a specified window. The IRS generally does not treat a noncompete as creating a “substantial risk of forfeiture” for tax purposes, but the plan document can still enforce it as a matter of contract. Read the forfeiture section of your plan before you assume the balance is secure.

Your Balance Is Not Protected the Way a 401(k) Is

Many employers informally fund their NQDC obligations through a rabbi trust, and MassMutual may manage the investments inside it. The trust earmarks assets to pay your future benefits, which sounds like protection but is not.

Under the IRS model trust language in Revenue Procedure 92-64, the assets in a rabbi trust must remain available to satisfy the employer’s general creditors if the company becomes insolvent.² If your employer cannot pay its debts or files for bankruptcy, the trustee has to stop benefit payments and hold the assets for creditors. You stand in line as a general unsecured creditor with no priority. An automatic bankruptcy stay suspends all NQDC payments immediately, and whether you ever recover depends on how much is left for unsecured creditors at the end of the case.

This is the single biggest risk of deferring compensation. If your employer’s financial position is uncertain, that risk should weigh heavily before you elect to defer a large portion of your pay.

When You Have to Make the Deferral Election

Section 409A is strict about election timing, and the deadlines are irrevocable once they pass. For salary and most other compensation earned over a calendar year, your election to defer must be submitted before the year the compensation is earned. To defer any portion of your 2026 salary, you had to file the election by December 31, 2025.¹ You cannot change your mind mid-year on pay you are already earning.

Two exceptions soften the prior-year rule. If you are newly eligible, you have 30 days from your eligibility date to make an initial election, and it applies only to compensation earned after you file.¹ For performance-based compensation tied to a service period of at least 12 months, you can elect up to six months before the performance period ends, provided the amount is not yet substantially certain to be paid and is not yet calculable.

Choosing How and When You Get Paid

The same election form that specifies how much to defer also fixes how and when the money will come back to you. Section 409A limits distributions to six specific triggering events:¹

Separation from service, through retirement, resignation, or termination
Disability, meaning you cannot engage in substantial gainful activity
Death, in which case your beneficiary receives the benefit
A fixed date or schedule you selected at the time you deferred
A change in control of the employer
An unforeseeable emergency meeting the narrow 409A standard

You also choose the payment form, typically a lump sum or installments over a stated period of years. Both choices are locked in at the time you defer. You cannot wait until retirement is in sight and then decide you would rather spread payments out, or pull them forward.

Changing a Payment Election Later

Section 409A does allow a subsequent election, but the rules are built to make it almost impossible to pull a payment forward. Any change to the time or form of payment must satisfy three conditions: the new election cannot take effect until at least 12 months after you make it, the payment must be pushed out at least five additional years from when it would have been made, and if the payment is tied to a fixed date, the election has to be filed at least 12 months before that first scheduled payment.¹ The five-year delay applies to separation, fixed-date, and change-in-control payments. It does not apply to death, disability, or unforeseeable emergency distributions.

MassMutual provides the forms, but the plan administrator will reject any change that misses even one prong of the test. In practice, the only direction you can move a payment is further out, and only with real advance planning.

The Six-Month Delay for Public Company Executives

If you work for a publicly traded company and are classified as a “specified employee,” any distribution tied to separation from service cannot start until at least six months after you leave.¹ Payments that would have gone out during the six-month window are accumulated and released in a lump sum when the waiting period ends, with normal payments resuming after that.

A specified employee is generally anyone who earned more than $235,000 in the prior year (the 2026 threshold) and is a key employee under the top-heavy plan rules.³ Senior executives at public companies almost always qualify. There is no workaround. Death is the only event that overrides the delay. Budget for the gap if you are planning an early retirement or a job change.

Hardship Access Is Narrow

The unforeseeable emergency provision is not a general hardship withdrawal. It covers severe financial hardship caused by illness or accident affecting you, your spouse, or a dependent; loss of property due to a casualty like a fire or natural disaster; or other extraordinary circumstances beyond your control.¹

Even when you qualify, the distribution is capped at the amount needed to cover the emergency plus the taxes on the withdrawal. The plan has to consider whether you could resolve the hardship through insurance, liquidating other assets, or available savings. If you have a bank account that could absorb the expense, expect the request to be denied. Treat this as a true last resort, not an escape hatch.

How the Taxes Work

Federal and state income tax is deferred until the money is actually distributed. Both the amounts you set aside and any investment earnings credited to your account are taxed as ordinary income in the year you receive them. If your marginal rate is lower in retirement, you come out ahead.

Payroll taxes run on a different clock. Under the special timing rule in Section 3121(v)(2), FICA is owed at the later of when you perform the services or when the deferred amount is no longer subject to a substantial risk of forfeiture.⁴ For most elective deferrals, that means FICA is due immediately on money you will not touch for years. Your employer withholds Social Security tax (6.2% up to the $184,500 wage base for 2026) and Medicare tax (1.45% on all wages, plus the 0.9% additional Medicare tax if applicable) from your other pay.⁵

The payoff is the nonduplication rule: once FICA has been assessed under the special timing rule, those dollars are not subject to FICA again when distributed.⁴ Future distributions will have income tax withheld, but no additional Social Security or Medicare tax. For executives already above the Social Security wage base, the practical FICA cost of deferring is often just the 1.45% Medicare tax, or 2.35% if the additional Medicare tax applies.

What a 409A Mistake Costs You

The penalties for violating Section 409A fall on you, the participant, not the employer. If the plan fails to meet 409A’s structural or operational requirements, the entire deferred balance becomes immediately taxable as income in the year of the violation. You then owe an additional 20% tax on that same amount, plus interest at the federal underpayment rate plus one percentage point, calculated as if the compensation had been taxable in the year it was first deferred.¹

Together, these can consume close to half of a large balance. That is why the election deadlines, the distribution triggers, and the modification rules are treated as absolute. A missed form is not a paperwork problem. It is a taxable event with a surcharge attached.

Moving to a Lower-Tax State in Retirement

If you earned your deferred compensation in a high-tax state but plan to retire somewhere with no income tax, federal law may block the former state from taxing your distributions. Under 4 U.S.C. Section 114, no state can impose income tax on the retirement income of a nonresident.⁶

For NQDC plans, the protection comes with a condition. Elective deferrals qualify only if you receive the distributions as substantially equal periodic payments over at least 10 years, or over your life expectancy.⁶ A lump sum or a shorter payout schedule does not qualify, and the state where you earned the money can still tax it. Excess benefit plans, which top up benefits beyond the qualified plan limits, only need to be paid after employment ends to be covered.

This is where a decision made years before retirement becomes a tax decision. If a move is likely, electing installments over 10 or more years at the time of your initial deferral can protect those payments from the old state’s tax. Because the subsequent election rules impose a five-year delay and a 12-month advance deadline, you cannot easily reroute the plan once the election is in place.

1
Office of the Law Revision Counsel. 26 USC 409A – Inclusion in Gross Income of Deferred Compensation Under Nonqualified Deferred Compensation Plans
2
BenefitsLink. Revenue Procedure 92-64
3
Internal Revenue Service. Notice 25-67 – 2026 Amounts Relating to Retirement Plans and IRAs
4
Office of the Law Revision Counsel. 26 USC 3121 – Definitions
5
Social Security Administration. Contribution and Benefit Base
6
Office of the Law Revision Counsel. 4 USC 114 – Limitation on State Income Taxation of Certain Pension Income