Employer Contributions to a Qualified Plan: 2026 Limits and Vesting

Employer contributions to a qualified retirement plan take three main forms: matching contributions tied to what employees defer, non-elective contributions paid regardless of employee saving, and discretionary profit-sharing contributions. For the 2026 plan year, the total of all contributions credited to any one participant’s account cannot exceed the lesser of $72,000 or 100% of that participant’s compensation, and the employer’s aggregate deduction is capped at 25% of the compensation paid to all plan participants. Vesting schedules, deposit deadlines, and non-discrimination rules shape what actually reaches employee accounts.

The Three Contribution Types

A matching contribution is pegged to what the employee defers from pay. A common formula is 50 cents on the dollar for the first 6% of pay deferred, producing a 3% employer contribution for anyone deferring at least 6%. Employers can fund the match each payroll or make a single year-end true-up, which reconciles the full-year match after all payroll data is final. True-ups matter for employees whose deferral rates change mid-year, because a strictly per-payroll match can shortchange someone who ramps up saving late in the year.

A non-elective contribution goes to every eligible employee’s account whether or not the employee defers anything. The most common formula is 3% of compensation, and non-elective contributions are the usual vehicle for satisfying safe harbor rules.¹

Profit-sharing contributions are discretionary. The employer decides each year whether to contribute and how much, allocated among participants according to a formula written into the plan document. A pro-rata split based on compensation is the simplest approach. Cross-tested or “new comparability” formulas can steer more of the contribution toward specific groups such as owners or longer-tenured employees, provided the overall allocation clears IRS non-discrimination testing. That flexibility is why profit-sharing designs are common at small businesses where owners want to maximize their own accounts while still funding staff.

Student Loan Payments as Deferrals

For plan years beginning after December 31, 2023, the SECURE 2.0 Act allows an employer to treat an employee’s qualified student loan payments as elective deferrals for matching purposes.² The match rate has to be the same as for regular deferrals, and the employee must certify annually that the payments were made. The rule applies to 401(k), 403(b), SIMPLE IRA, and governmental 457(b) plans.

The 2026 Limits

Per-Participant Cap (Section 415)

Everything credited to a single participant’s account in a year, combining employer matching, employer non-elective and profit-sharing contributions, employee pre-tax and Roth deferrals, and any forfeitures allocated to that account, cannot exceed the lesser of $72,000 or 100% of the participant’s compensation for 2026.³⁴ Catch-up contributions sit outside this cap. Participants age 50 and older can defer an additional $8,000 for 2026 beyond the $24,500 elective deferral limit, and under SECURE 2.0, those who turn 60, 61, 62, or 63 during the year get a larger catch-up of $11,250.

Employer Deduction Cap (Section 404)

The employer’s deduction for contributions to all profit-sharing and stock bonus plans is limited to 25% of the total compensation paid to plan participants during the tax year.⁵ Anything above 25% is nondeductible in the current year and triggers a 10% excise tax on the excess.⁶ The excess can be carried forward and deducted in a later year, but the excise tax still applies for the year the contribution was nondeductible.

Compensation Counted

Only the first $360,000 of any individual participant’s compensation counts for contribution and testing purposes in 2026.⁷ Pay above that threshold is ignored. An executive earning $500,000 has contributions calculated as if their pay were $360,000.

Safe Harbor Designs

Employers can adopt a safe harbor design to skip most annual non-discrimination testing. The trade-off is a required minimum employer contribution that generally must vest immediately.

A safe harbor non-elective contribution is 3% of compensation for every eligible employee. A basic safe harbor match is dollar-for-dollar on the first 3% of pay deferred plus 50 cents on the dollar on the next 2%, producing a maximum of 4% of pay. An enhanced match must be at least as generous as the basic formula and can take a different shape, such as a full 100% match on the first 4% deferred.

A Qualified Automatic Contribution Arrangement (QACA) pairs automatic enrollment with a lower minimum match: 100% of the first 1% deferred plus 50% of the next 5%, for a maximum of 3.5% of pay. QACA contributions can use a two-year cliff vesting schedule rather than immediate vesting.⁸

When Contributions Have to Be Deposited

Employee deferrals and employer contributions run on very different clocks, and mixing them up is a frequent source of penalties.

Employee Deferrals

Salary deferrals and loan repayments withheld from paychecks must be deposited into the plan trust as soon as the employer can reasonably separate those amounts from its general assets. The Department of Labor treats this as a fiduciary obligation. Plans with fewer than 100 participants get a safe harbor: deposits made within seven business days of the payroll date are deemed timely.⁹ Larger plans generally have to deposit within a few business days.

The outer regulatory boundary is the 15th business day of the month following the payroll date, but this is not a safe harbor, and treating it as one is a mistake DOL auditors catch regularly.¹⁰ Late deposits are prohibited transactions. The employer has to calculate and contribute lost earnings, report the failure on Form 5500, and may owe excise taxes.

Employer Matching and Profit-Sharing

To deduct a matching or profit-sharing contribution for a given tax year, the employer must deposit it by the due date of its federal income tax return, including extensions.¹¹ A calendar-year C-corporation has until April 15, or October 15 with the automatic six-month extension. S-corporations and partnerships have a March 15 deadline, or September 15 with extension. The contribution is treated as made on the last day of the prior tax year, as long as it’s allocated to participant accounts for that year.⁵ This delay is deliberate. It lets the employer close its books and decide on funding after seeing how the year turned out.

Vesting

Employees always own 100% of their own deferrals. Employer contributions can be subject to a vesting schedule that requires service time before the employee has full ownership. Unvested amounts are forfeited on separation.

The IRS allows two vesting structures for employer matching and profit-sharing contributions in defined contribution plans:¹²

Three-year cliff vesting: 0% until the employee completes three years of service, then 100%.
Six-year graded vesting: 20% after two years of service, increasing 20% per year, reaching 100% after six years.

A year of service generally means at least 1,000 hours worked in a 12-month period. Plans can vest faster, and many do. Safe harbor matching and non-elective contributions must vest immediately, except QACA contributions, which can use a two-year cliff.⁸ All participants must become fully vested when they reach the plan’s normal retirement age or if the plan is terminated.¹²

Non-Discrimination and Top-Heavy Rules

A qualified plan has to benefit the broader workforce, not just owners and top earners. For 2026, a highly compensated employee (HCE) is anyone who owned more than 5% of the business during the current or prior year, or who earned more than $160,000 in the prior year.⁷

The Actual Deferral Percentage test compares the average deferral rate of HCEs to that of non-highly compensated employees. The Actual Contribution Percentage test does the same for employer matching contributions. Failing either test forces either refunds of excess contributions to HCEs, which become taxable to them, or additional contributions for non-HCEs to bring the ratios into line. Either fix costs real money, which is a large part of why safe harbor designs are popular.

A separate rule kicks in when key employees, generally owners and officers, hold more than 60% of total plan assets. The plan is then “top-heavy,” and the employer must contribute at least 3% of compensation for every non-key employee who participated during the year.¹³ If no key employee received more than 3% of pay, the required minimum drops to match that lower rate. Small businesses land in top-heavy status frequently.¹⁴

Forfeitures

When an employee leaves before fully vesting, the unvested portion of the employer contributions is forfeited back to the plan trust. The plan document must say how forfeitures are used. The IRS permits three options: paying plan administrative expenses, reducing future employer contributions, or reallocating to remaining participants’ accounts. Many employers apply forfeitures against the next contribution obligation to reduce out-of-pocket cost. Forfeitures must be used no later than 12 months after the close of the plan year in which they arise, and any amounts reallocated to participant accounts count toward the $72,000 Section 415 limit.⁴

Tax Treatment

The employer gets a current-year deduction for the contribution, subject to the 25% cap, provided it qualifies as a reasonable business expense for services rendered.⁵ The employee owes no income tax when the contribution hits the account. Tax is deferred until withdrawal. Investment earnings inside the trust compound without annual taxation.

SECURE 2.0 also lets employees elect to have employer matching and non-elective contributions treated as Roth. The contribution is included in the employee’s taxable income for the year it’s made, and qualified withdrawals in retirement are tax-free.¹⁵

Startup Credit for Small Employers

A small employer that has never sponsored a retirement plan can claim a tax credit for setting one up. The business must have had 100 or fewer employees earning at least $5,000 in the prior year, including at least one non-highly compensated employee, and the workforce cannot be substantially the same group that participated in another employer’s plan during the three preceding tax years.¹⁶

For employers with 50 or fewer qualifying employees, the credit is 100% of eligible startup costs, capped at the greater of $500 or $250 per eligible non-HCE, up to $5,000. Employers with 51 to 100 qualifying employees receive 50% of eligible costs subject to the same dollar cap. The credit runs for the plan’s first three years.¹⁶

1
Internal Revenue Service. Compensation Definition in Safe Harbor 401(k) Plans
2
Internal Revenue Service. Guidance Under Section 110 of the SECURE 2.0 Act With Respect to Matching Contributions Made on Account of Qualified Student Loan Payments
3
Internal Revenue Service. IRS Notice 2025-67 – 2026 Amounts Relating to Retirement Plans and IRAs
4
Internal Revenue Service. Fixing Common Plan Mistakes – Failure to Limit Contributions for a Participant
5
Office of the Law Revision Counsel. 26 USC 404 – Deduction for Contributions of an Employer to an Employees Trust or Annuity Plan
6
Office of the Law Revision Counsel. 26 USC 4972 – Tax on Nondeductible Contributions to Qualified Employer Plans
7
Internal Revenue Service. COLA Increases for Dollar Limitations on Benefits and Contributions
8
eCFR. 26 CFR 1.401(k)-3 – Safe Harbor Requirements
9
U.S. Department of Labor. Employee Contributions Fact Sheet
10
Internal Revenue Service. 401(k) Plan Fix-It Guide – You Havent Timely Deposited Employee Elective Deferrals
11
Internal Revenue Service. Deductibility of Employer Contributions to a 401(k) Plan Made After the End of the Tax Year
12
Internal Revenue Service. Retirement Topics – Vesting
13
Office of the Law Revision Counsel. 26 USC 416 – Special Rules for Top-Heavy Plans
14
Internal Revenue Service. Is My 401(k) Top-Heavy?
15
Internal Revenue Service. SECURE 2.0 Act Changes Affect How Businesses Complete Forms W-2
16
Internal Revenue Service. Retirement Plans Startup Costs Tax Credit