Profit Sharing Bonus Plan: IRS Limits, Vesting, and Deductions

A profit sharing bonus plan is an employer-sponsored retirement arrangement in which the company puts a discretionary amount into employees’ accounts each year, typically allocated by a formula tied to pay. Contributions are optional: the employer can change the amount annually or skip a year entirely, and the business does not actually need to turn a profit to fund one.¹ For 2026, the total that can be added to any single participant’s account in a year is capped at $72,000.²

How the Contribution Gets Divided

The comp-to-comp method is the most common allocation. Each eligible employee receives the same percentage of pay. Divide the total employer contribution by total eligible payroll to get the percentage, then multiply each person’s salary by it.¹ If a company puts $50,000 into the plan and total payroll is $1,000,000, every participant gets 5% of their pay. Someone earning $60,000 gets $3,000; someone earning $100,000 gets $5,000.

The flat dollar method ignores pay entirely. A $50,000 pool split among 50 participants gives everyone $1,000, regardless of title or seniority. Smaller businesses that want simplicity and equal treatment tend to prefer this approach.

Age-weighted and cross-tested formulas go the other direction. They allow disproportionately larger contributions for older employees closer to retirement. A 55-year-old executive might receive a much bigger slice of the same pool than a 25-year-old new hire, with actuarial calculations demonstrating that the projected retirement benefit still meets IRS non-discrimination requirements. Businesses with older owners and younger staff often find these designs useful.

Who Has to Be Included

Under IRC Section 410(a), a plan cannot make an employee wait past age 21 or longer than one year of service before joining. A year of service means a 12-month period with at least 1,000 hours of work.³ Many plans use both thresholds together, so a 22-year-old hired in January generally becomes eligible around the following January.

Two groups can be left out without creating non-discrimination problems: employees covered by a collective bargaining agreement where retirement benefits were bargained in good faith, and non-resident aliens with no U.S.-source earned income.⁴

Starting with the 2026 plan year, part-time workers who log at least 500 hours in each of two consecutive 12-month periods must be allowed to make elective deferrals if the plan offers them, even though they fall short of the 1,000-hour standard. Employers can still exclude these long-term part-time employees from receiving profit sharing allocations themselves, and collectively bargained employees remain exempt from the provision.⁵

IRS Limits on Contributions and Compensation

For 2026, total annual additions to a participant’s account cannot exceed the lesser of 100% of compensation or $72,000. That ceiling covers everything going in: employer profit sharing contributions, any employee elective deferrals, and forfeitures reallocated from departing employees. The figures are indexed for inflation each year.²

A separate compensation cap limits how much of any individual’s salary can be counted in the calculation. Only the first $360,000 of pay counts for 2026.² Under comp-to-comp at a 10% rate, an employee earning $400,000 receives 10% of $360,000 ($36,000), not 10% of their full salary.

What the Employer Can Deduct

Employers can deduct profit sharing contributions up to 25% of total compensation paid to all eligible participants during the tax year.⁶ With $2,000,000 in eligible payroll, the maximum deduction is $500,000. Anything above that is nondeductible and triggers a 10% excise tax on the excess, reported on Form 5330.⁷

The contribution does not have to hit the plan before the calendar year ends. Under IRC Section 404(a)(6), a contribution deposited by the due date of the employer’s tax return (including extensions) can be deducted for the prior tax year if the employer designates it that way.⁸ For a calendar-year C corporation, that usually means April 15, or October 15 with an extension. The business can see its full-year results before deciding how much to put in.

When Employees Actually Own the Money

Vesting decides when employer contributions belong to the employee. Money an employee defers from their own paycheck is 100% theirs immediately. Employer profit sharing contributions follow the vesting schedule written into the plan document. The IRS permits two structures for defined contribution plans.⁹

Cliff vesting gives the employee 0% ownership of employer contributions until a service milestone, then jumps to 100%. Federal law caps this cliff at three years. Leave one day before the milestone and everything the employer contributed is forfeited.

Graded vesting phases ownership in over up to six years. A common schedule grants 20% after two years and adds another 20% each year through year six. An employee who departs at four years keeps 60% of employer contributions.

Unvested amounts left behind go into a forfeiture account. The plan must use those forfeitures either to fund future employer contributions or to pay plan administrative expenses.¹⁰ In practice, many employers apply forfeitures against the following year’s contribution, so turnover effectively subsidizes what remaining employees receive.

Top-Heavy Rules for Small Businesses

A plan becomes top-heavy when more than 60% of total account balances belong to key employees. That group includes officers earning above $235,000 in 2026, owners with more than a 5% stake, and owners with more than 1% who earn over $150,000.² Small businesses where the owner is also the top earner run into this often.

When a plan is top-heavy, the employer must contribute at least 3% of compensation for every non-key participant, even if it would otherwise contribute nothing.¹¹ If no key employee’s contribution rate reaches 3%, non-key employees receive that lower rate instead.¹² Skipping this requirement can jeopardize the plan’s tax-qualified status.

Getting the Money Out

Money inside the plan grows tax-deferred. The employer deducts the contribution when made, and the employee owes no tax until taking a distribution. Withdrawals are then taxed as ordinary income at the participant’s tax rate for that year.¹³ Rolling a distribution into an IRA preserves the deferral and avoids an immediate tax bill.

Early Withdrawal Penalty

Withdrawals before age 59½ generally carry a 10% additional tax on top of ordinary income tax.¹⁴ On a $10,000 distribution, that’s $1,000 in penalty alone, before income tax. Several exceptions apply, including total and permanent disability, unreimbursed medical expenses over 7.5% of adjusted gross income, qualified domestic relations orders in a divorce, substantially equal periodic payments over life expectancy, qualified birth or adoption expenses up to $5,000 per child, and federally declared disaster distributions up to $22,000.

One exception is specific to employer plans and easy to miss. If you leave your job during or after the year you turn 55, distributions from that employer’s plan are penalty-free. The rule does not apply to IRAs, so rolling the money into an IRA before 59½ gives up this exception permanently.¹⁴

Required Minimum Distributions

Money cannot sit in a profit sharing plan forever. Required minimum distributions must begin by April 1 of the year after you reach the applicable RMD age. That age is 73 for people born between 1951 and 1959, and 75 for those born in 1960 or later.¹⁵ Missing an RMD triggers a steep excise tax on the shortfall.

Loans From the Plan

Plans can allow participants to borrow against their vested balance, though they are not required to. Where loans are permitted, the amount is capped at the lesser of $50,000 or 50% of the vested balance, with a $10,000 floor. The $50,000 ceiling is reduced by the highest outstanding balance from the prior 12 months.¹⁶ Repayment runs in level installments at least quarterly, generally over five years. Falling behind on the schedule turns the outstanding balance into a taxable distribution and can trigger the early withdrawal penalty.

Annual Compliance

Employers file Form 5500 each year with the Department of Labor, reporting on the plan’s financial condition, investments, and operations. For calendar-year plans, the deadline is July 31, with extensions available.¹⁷ New participants must also receive a Summary Plan Description within 90 days of joining, laying out the vesting schedule, allocation formula, distribution options, and claims process in plain language. Falling behind on these disclosures is among the most common findings in small-business plan audits.

1
Internal Revenue Service. Choosing a Retirement Plan: Profit Sharing Plan
2
Internal Revenue Service. COLA Increases for Dollar Limitations on Benefits and Contributions
3
Office of the Law Revision Counsel. 26 U.S. Code 410 – Minimum Participation Standards
4
Office of the Law Revision Counsel. 26 USC 410 – Minimum Participation Standards
5
Fidelity. Long Term Part Time Employees May Now Be Eligible to Participate in Your 401k
6
Office of the Law Revision Counsel. 26 USC 404 – Deduction for Contributions of an Employer to an Employees Trust or Annuity Plan
7
Internal Revenue Service. Publication 560 – Retirement Plans for Small Business
8
Internal Revenue Service. Deductibility of Employer Contributions to a 401(k) Plan Made After the End of the Tax Year
9
Internal Revenue Service. Retirement Topics – Vesting
10
Internal Revenue Service. Plan Forfeitures Used for Qualified Nonelective and Qualified Matching Contributions
11
Office of the Law Revision Counsel. 26 USC 416 – Special Rules for Top-Heavy Plans
12
Internal Revenue Service. Is My 401(k) Top-Heavy?
13
Internal Revenue Service. Topic No. 412 – Lump-Sum Distributions
14
Internal Revenue Service. Retirement Topics – Exceptions to Tax on Early Distributions
15
Congress.gov. Required Minimum Distribution (RMD) Rules for Original Owners
16
Internal Revenue Service. Borrowing Limits for Participants With Multiple Plan Loans
17
Internal Revenue Service. Form 5500 Corner