Qualified Retirement Plans: Types, Limits, and Distribution Rules

A qualified retirement plan is an employer-sponsored savings arrangement that meets federal tax requirements under Internal Revenue Code Section 401(a), letting contributions grow tax-deferred while giving the employer a deduction for what it puts in. Qualified retirement plans are governed by two overlapping bodies of law: the Internal Revenue Code, which sets the tax rules, and the Employee Retirement Income Security Act (ERISA), which imposes fiduciary standards and protections for participants. For 2026, employees can defer up to $24,500 of their own pay into plans such as a 401(k), and total combined contributions from all sources can reach $72,000 per person.

What Makes a Plan Qualified

A plan earns qualified status by satisfying the conditions in IRC Section 401(a). The plan’s trust must be organized in the United States and exist for the exclusive benefit of employees and their beneficiaries. Assets cannot be diverted back to the employer or used for anything other than paying benefits and reasonable administrative expenses.¹ That exclusive benefit rule is the backbone of qualification.

Contributions and benefits cannot disproportionately favor highly compensated employees. For the 2026 plan year, a highly compensated employee is someone who earned more than $160,000 the prior year.² Plans have to pass nondiscrimination testing each year, comparing the rate of contributions or benefits provided to those employees against the rate provided to everyone else.¹

ERISA requires every qualified plan to be established and maintained under a written document, and administrators must give participants a summary plan description written plainly enough for the average employee to follow.³ The document spells out eligibility rules, benefit formulas, vesting schedules, claims procedures, and the circumstances under which someone could lose benefits. Any material change triggers a requirement to distribute an updated summary.

The Two Main Types

Qualified plans fall into two categories based on how retirement income is determined. The distinction decides who bears investment risk and what a participant can expect at retirement.

Defined Benefit Plans

A traditional pension is the classic defined benefit plan. The employer promises a specific monthly payment at retirement, usually calculated from a formula based on years of service and salary history. Because the employer guarantees the payout, it carries all the investment risk. If plan investments underperform, the company has to contribute more to close the gap. These plans have become less common in the private sector but remain widespread in government employment.

Defined Contribution Plans

In a defined contribution plan, there is no promised benefit amount. The employer, the employee, or both contribute to individual accounts, and the final balance depends on contributions and investment performance. The employee bears the investment risk. The most common examples are 401(k) plans at for-profit companies and 403(b) plans at public schools and tax-exempt organizations. Both let employees defer part of their salary on a pre-tax or Roth basis, and many employers match some portion.

Profit-sharing plans let employers contribute varying amounts each year based on company performance, with no obligation in lean years. Money purchase plans lock the employer into a fixed contribution percentage of each participant’s pay every year, whether the business is profitable or not.⁴

Cash Balance Plans

A cash balance plan is technically a defined benefit plan but looks like a defined contribution account. Each participant has a hypothetical balance that grows through two annual credits: a pay credit (a percentage of compensation from the employer) and an interest credit (a guaranteed rate of return).⁵ The benefit is expressed as a lump sum rather than a monthly income stream. The employer still bears the investment risk behind the scenes, because the guaranteed interest credit must be paid regardless of market performance.

2026 Contribution and Benefit Limits

The IRS adjusts contribution and benefit caps annually for inflation. For 2026, the numbers that matter to most participants:⁶²

Employee deferral limit for 401(k), 403(b), and 457 plans: $24,500
Catch-up contribution for participants 50 and older: $8,000 additional, for a total of $32,500
Enhanced catch-up for ages 60 through 63: $11,250 additional, for a total of $35,750
Total annual additions per participant under Section 415(c): $72,000, covering the combined total of employee deferrals, employer contributions, and reallocated forfeitures
Maximum annual defined benefit under Section 415(b): $290,000
Maximum annual compensation that can be considered: $360,000

The $72,000 total annual additions cap is the ceiling that matters most for high earners receiving generous employer contributions.⁷ If contributions exceed these caps, the plan risks losing its tax-qualified status, which would trigger immediate taxation of vested benefits for every participant. Administrators watch these limits closely because a single participant’s excess can jeopardize the whole arrangement.

When You’re In and When the Money Is Yours

Federal law sets minimum standards for when employees have to be allowed into a plan and when they gain permanent ownership of employer-funded benefits. These rules stop employers from keeping workers eligible on paper while structuring the plan so most people never actually receive anything.

Eligibility

Most qualified plans must let an employee participate once they reach age 21 and complete one year of service.⁸ A year of service generally means a 12-month period with at least 1,000 hours worked. Plans can set a shorter waiting period, and many do, but they cannot impose a longer one.

Vesting Schedules

Vesting determines when you permanently own the employer-contributed portion of your account. Your own salary deferrals are always 100% vested immediately.⁸ Employer contributions follow a schedule set by the plan, but ERISA caps how long the employer can make you wait, and the allowable schedules differ by plan type.⁹

For defined contribution plans, the two options are cliff vesting (0% until you complete three years of service, then 100% at once) or graded vesting (20% after two years, increasing 20% each year until 100% after six years).

For defined benefit plans, the timelines run longer: cliff vesting (0% until five years, then 100%) or graded vesting (20% after three years, rising 20% each year until 100% after seven years).

These are the slowest schedules the law allows. An employer can always vest faster, and some plans provide immediate full vesting on every contribution.

Partial Plan Termination

When a company lays off a significant portion of its workforce, a partial plan termination may be triggered. The IRS presumes one has occurred when at least 20% of plan participants lose their jobs during a plan year.¹⁰ If that happens, every affected employee must become 100% vested in their account balance, regardless of where they stood on the schedule. The employer can rebut the presumption by showing the turnover was purely voluntary, but large layoffs almost always trigger full vesting for those let go.

Top-Heavy Plan Protections

A plan is top-heavy when balances belonging to key employees (generally officers earning more than $235,000 in 2026 and certain owners) make up more than 60% of total plan assets.¹¹² This test exists because small businesses and professional practices often have a handful of owners and executives whose accounts dwarf everyone else’s.

When a plan fails the test, it must provide minimum benefits or contributions to non-key employees. A top-heavy defined contribution plan requires the employer to contribute at least 3% of each non-key employee’s compensation. A top-heavy defined benefit plan requires each non-key employee to accrue a minimum annual benefit of 2% of average compensation times years of service, up to a 20% cap.¹¹

Taxes on Distributions

Money that goes into a traditional qualified plan on a pre-tax basis gets taxed when it comes out. Distributions are treated as ordinary income in the year you receive them, taxed at whatever your marginal rate happens to be. Years of tax-deferred growth postpone the bill; they do not erase it.

The 10% Early Withdrawal Penalty

Taking money out before age 59½ generally triggers a 10% additional tax on top of the regular income tax.¹² Several exceptions exist:

Separation from service during or after the year you turn 55, or age 50 for public safety employees in governmental plans, penalty-free from that employer’s plan
Total and permanent disability of the participant
Distributions to a beneficiary after the participant’s death
Substantially equal periodic payments taken over your life expectancy at regular intervals
Unreimbursed medical expenses exceeding 7.5% of adjusted gross income
Payments to a former spouse under a qualified domestic relations order
Up to $5,000 per child for qualified birth or adoption expenses
Up to $22,000 for federally declared disaster losses
Distributions after a physician certifies a terminal illness

The separation-from-service exception catches many people off guard because it is unique to employer plans and does not apply to IRA withdrawals. The full list of exceptions is longer, and some apply only to IRAs rather than employer-sponsored plans.

Required Minimum Distributions

You cannot leave money in a qualified plan indefinitely. Under current law, participants must begin taking required minimum distributions by April 1 of the year after they turn 73.¹³ For participants who are not 5% owners and are still working, the deadline extends to April 1 of the year after retirement, if the plan allows. Missing an RMD results in a 25% excise tax on the shortfall, reduced to 10% if corrected within two years for IRAs. The applicable age is scheduled to rise to 75 starting in 2033.¹⁴

Accessing Funds Before Retirement

Many defined contribution plans give participants ways to reach their money early, though both come with significant strings.

Plan Loans

If the plan allows it, you can borrow from your own account up to the lesser of $50,000 or 50% of your vested balance.¹⁵ The loan generally has to be repaid within five years through substantially level payments at least quarterly, though loans used to buy a primary residence can run longer. If you leave the employer before repaying, the outstanding balance is typically treated as a taxable distribution, and the 10% early withdrawal penalty applies if you’re under 59½.

Hardship Withdrawals

A hardship withdrawal is not a loan; the money is not repaid. To qualify, a participant must demonstrate an immediate and heavy financial need, and the withdrawal cannot exceed the amount required to satisfy that need plus taxes and penalties on the withdrawal itself. The IRS recognizes several safe-harbor reasons that automatically qualify:¹⁶

Medical expenses for the employee, spouse, or dependents
Costs of purchasing a primary residence
Tuition and education fees
Payments to prevent eviction or foreclosure on a primary residence
Funeral and burial expenses
Repair costs for damage to a primary residence that would qualify as a casualty loss
Expenses from a federally declared disaster

Hardship withdrawals are taxable as ordinary income and generally subject to the 10% early withdrawal penalty. Participants also cannot access funds the plan has restricted, such as employer matching contributions that haven’t vested.

Rolling Over Plan Assets

When you leave an employer or retire, you can move your qualified plan balance to another qualified plan or an IRA without triggering any tax. The cleanest way is a direct rollover, where your administrator transfers the money straight to the new account. No taxes are withheld and no deadlines apply.¹⁷

Take the distribution as a check made out to you, and the plan has to withhold 20% for federal taxes. You then have 60 days to deposit the full original amount (including the withheld 20%, which you must replace from other funds) into another qualified plan or IRA to avoid tax on the distribution. Miss the 60-day window and the entire amount becomes taxable income, with the 10% penalty on top if you’re under 59½.¹⁷ The 20% withholding creates a gap that’s difficult to bridge out of pocket, so a direct rollover is almost always the better route.

Fiduciary Duties and Prohibited Transactions

Anyone who exercises control over plan management, assets, or administration is a fiduciary under ERISA and must meet the highest standard of care the law imposes. Fiduciaries have to act solely in the interest of participants, manage the plan with the skill and diligence of a knowledgeable professional, diversify investments to avoid concentrated losses, and follow the plan document to the extent it’s consistent with ERISA.¹⁸ Falling short exposes fiduciaries to personal liability.

Federal law also flatly bans certain transactions between the plan and people connected to it, called “disqualified persons” (a group that includes the employer, plan fiduciaries, and certain family members). Prohibited transactions include selling or leasing property to the plan, lending money to or from the plan, and using plan assets for a fiduciary’s personal benefit.¹⁹ The penalty is an excise tax of 15% of the amount involved for each year the violation continues. If it isn’t corrected during the taxable period, a second-tier tax of 100% of the amount involved applies. These penalties fall on the disqualified person who participated, not on the plan.

ERISA also requires every person who handles plan funds to be covered by a fidelity bond equal to at least 10% of the plan assets they handle, with a $1,000 minimum and a $500,000 maximum. Plans that hold employer stock face a higher cap of $1,000,000.²⁰ The bond protects participants against losses from fraud or dishonesty; it is not the same as fiduciary liability insurance, which covers negligent management decisions.

SECURE 2.0 Changes Taking Effect in 2026

The SECURE 2.0 Act, enacted in late 2022, introduced changes that are phasing in through 2026 and beyond. The most significant for participants and sponsors:

Participants who are 60, 61, 62, or 63 during the calendar year can make catch-up contributions of $11,250 instead of the standard $8,000 catch-up for those 50 and older.⁶
Beginning in 2026, employees who earned more than $150,000 in the prior year must make all catch-up contributions on a Roth (after-tax) basis. Those earning $150,000 or less can still make pre-tax catch-up contributions.
401(k) and 403(b) plans established after December 29, 2022, must automatically enroll eligible employees at a contribution rate of at least 3%, with annual increases until the rate reaches at least 10%. Existing plans and small businesses with 10 or fewer employees are exempt.
Employers can treat an employee’s qualified student loan payments as elective deferrals for matching purposes, so workers can receive employer matches even while directing paychecks toward student debt instead of the plan.
Defined contribution plans can offer pension-linked emergency savings accounts funded by Roth employee contributions, capped at $2,600 for 2026, with the first four withdrawals per year free from taxes and penalties.
The excise tax for missing an RMD dropped from 50% to 25%, and further to 10% if the missed RMD is corrected within two years for IRAs.

The Roth catch-up requirement for higher earners is the change most likely to catch plan sponsors off guard, because it requires payroll updates and plan amendments to separate catch-up contributions by income level. Plans that haven’t updated their systems by 2026 will need to either restrict all catch-up contributions to Roth or stop offering them until compliance is in place.

1
Office of the Law Revision Counsel. 26 U.S.C. 401 – Qualified Pension, Profit-Sharing, and Stock Bonus Plans
2
Internal Revenue Service. 2026 Amounts Relating to Retirement Plans and IRAs – Notice 2025-67
3
Office of the Law Revision Counsel. 29 U.S.C. 1022 – Summary Plan Description
4
Internal Revenue Service. Choosing a Retirement Plan – Money Purchase Plan
5
U.S. Department of Labor. Fact Sheet – Cash Balance Pension Plans
6
Internal Revenue Service. 401(k) Limit Increases to $24,500 for 2026, IRA Limit Increases to $7,500
7
Office of the Law Revision Counsel. 26 U.S.C. 415 – Limitations on Benefits and Contribution Under Qualified Plans
8
Internal Revenue Service. 401(k) Plan Qualification Requirements
9
Office of the Law Revision Counsel. 29 U.S.C. 1053 – Minimum Vesting Standards
10
Internal Revenue Service. Partial Termination of Plan
11
Office of the Law Revision Counsel. 26 U.S.C. 416 – Special Rules for Top-Heavy Plans
12
Internal Revenue Service. Retirement Topics – Exceptions to Tax on Early Distributions
13
Internal Revenue Service. Retirement Topics – Required Minimum Distributions (RMDs)
14
Federal Register. Required Minimum Distributions
15
eCFR. 26 CFR 1.72(p)-1 – Loans Treated as Distributions
16
Internal Revenue Service. Retirement Plans FAQs Regarding Hardship Distributions
17
Internal Revenue Service. Rollovers of Retirement Plan and IRA Distributions
18
Office of the Law Revision Counsel. 29 U.S.C. 1104 – Fiduciary Duties
19
Office of the Law Revision Counsel. 26 U.S.C. 4975 – Tax on Prohibited Transactions
20
Office of the Law Revision Counsel. 29 U.S.C. 1112 – Bonding