The name misleads people. Profit sharing generally means discretionary employer contributions to eligible employees' accounts. It doesn't require the business to hand out its accounting profits.
This article covers how the contributions work, allocation formulas, 2026 IRS limits, compliance, comparisons with other employer contributions, and setup.
Key Takeaways
- One 401(k) plan can hold employee deferrals plus discretionary employer profit-sharing contributions.
- The plan document's formula controls allocation; the employer generally decides each year whether to contribute.
- Limits, vesting, testing, and distribution rules all shape the design.
- Model owner goals, workforce demographics, cash flow, and fees before choosing a formula.
What Is a 401(k) Profit-Sharing Plan?
A profit-sharing plan is a defined contribution arrangement. Per IRS guidance, it uses discretionary employer contributions, a definite allocation formula, and separate participant accounts. Current business profits aren't required.
Standalone Plan vs. 401(k) With Profit Sharing
- Standalone profit-sharing plan: generally employer-funded only, with no employee contributions.
- 401(k) with profit sharing: adds a cash-or-deferred feature, so employees can make salary deferrals while the employer adds nonelective contributions.
Employer contributions go in whether or not an employee defers anything. That's the key difference from a match.
Why the Paperwork Matters
Discretion over the dollar amount doesn't erase the formula requirement. A qualified plan needs a written plan document, assets held in a trust, defined eligibility rules, and an allocation formula. Those pieces separate a real retirement plan from an informal cash bonus.
How 401(k) Profit Sharing Works and Which Design Choices Matter
How Contributions and Allocations Are Determined
Two decisions are separate. The employer decides whether and how much to contribute. The plan document decides how that amount is divided.
A simple fictional example under a pro rata formula: an employer contributes $30,000 across three employees earning $100,000, $60,000, and $40,000 (total $200,000). Each receives 15% of pay: $15,000, $9,000, and $6,000.
Common formulas:
| Formula | How it works |
|---|---|
| Pro rata (comp-to-comp) | Same percentage of pay for everyone |
| Integrated (permitted disparity) | Higher rate on pay above an integration level, within IRC 401(l) limits |
| Age-weighted | Allocations scaled by age, tested on equivalent retirement benefits |
| New comparability (cross-tested) | Different rates for different groups, tested as equivalent benefits |
Cross-testing carries a gateway: each non-highly compensated employee must receive at least one-third of the highest highly compensated employee's allocation rate, or 5% of compensation. Passing the gateway alone does not mean the plan passes cross-testing.
Treasury's own example shows why salary rank alone is not the measure: two employees earning $170,000 and $150,000 each receive $30,000, which works out to 17.65% and 20% of pay. These are illustrative figures, not benchmarks.
Owner age, employee age, pay, headcount, and turnover all change cost and testing outcomes. A firm with an older owner and a young staff may favor age-weighted or cross-tested designs. Run the numbers before committing.
Eligibility, Vesting, and Contribution Timing
Eligibility. Plans generally use age 21 and one year of service, with a year meaning 1,000 hours in 12 months. Under SECURE 2.0, long-term part-time employees who log 500 hours in each of two consecutive years gain deferral access. Employers aren't automatically required to give them matching or nonelective contributions.
Vesting. Employee deferrals are always fully vested. Employer profit sharing can vest immediately, on a 3-year cliff, or on a 6-year graded schedule (20% after year 2, then 40%, 60%, 80%, 100%). A longer schedule encourages retention. Immediate vesting is a stronger recruiting message. Forfeitures can offset employer contributions or plan expenses under the plan's terms.
Timing. Contributions are deductible for a tax year if made by the employer's return due date, including extensions. Confirm deadlines for your entity type and plan year.
Skipping a year. Discretionary contributions can be skipped. Still, employees may come to expect them, and the plan document continues to govern.
Pairing Profit Sharing With a Safe Harbor 401(k)
Many owners combine a safe harbor contribution with profit sharing. The safe harbor piece gives employees a predictable benefit and exempts the plan from the ADP test, which can leave the owner free to defer more.
- Safe harbor nonelective: at least 3% of pay for every eligible non-highly compensated employee, regardless of deferrals.
- Basic match: 100% of deferrals up to 3% of pay, plus 50% on the next 2%.
- Enhanced match: at least as generous as the basic match at every deferral level.
Nonelective contributions cost more when few employees participate but avoid the ACP matching conditions. Matches cost less when participation is low. Traditional safe harbor contributions are fully vested, while added profit sharing can follow a different schedule.
Safe harbor relief does not cover every nondiscrimination test, and top-heavy relief applies only if the plan holds just deferrals and qualifying safe harbor contributions. Have a third-party administrator model how the two features interact.
Contribution Limits, Tax Treatment, and Compliance
2026 Limits
Per IRS Notice 2025-67, the 2026 limits are:
| Limit | Amount |
|---|---|
| Annual additions (employer + employee, excluding catch-up) | Lesser of $72,000 or 100% of compensation |
| Employee elective deferrals | $24,500 |
| Catch-up, age 50+ | $8,000 |
| Catch-up, ages 60-63 (replaces ordinary catch-up) | $11,250 |
| Compensation cap | $360,000 |
Don't confuse the $24,500 deferral limit with the $72,000 annual-additions cap.
Deduction and Owner Compensation
The employer deduction for contributions is generally capped at 25% of eligible participants' compensation. Elective deferrals sit outside that cap. Compensation depends on structure:
- Sole proprietors: net self-employment earnings, reduced by deductible self-employment tax and the owner's own contribution.
- Partners: treated as self-employed, with partnership income entering the earned-income calculation.
- S corporation owners: W-2 wages, not distributions.
Coordinate with a tax professional.
Tax Treatment
Pre-tax contributions and growth are taxed on distribution. SECURE 2.0 allows optional Roth employer contributions, which are fully vested when allocated and taxable in the year allocated.
A cash bonus, by contrast, is generally subject to withholding, Social Security, Medicare, and FUTA, while qualified plan contributions are not.
Compliance
Ongoing requirements include:
- Nondiscrimination testing under IRC 401(a)(4) and coverage testing under 410(b)
- Top-heavy rules (416): when key employees hold over 60% of assets, non-key employees generally receive a 3% minimum
- Annual Form 5500 filing, generally due by the last day of the seventh month after plan year-end
The sponsor carries fiduciary responsibility. The recordkeeper and TPA typically handle calculations and reporting.
Withdrawals, Loans, and Distributions
Access depends on the plan document and an event such as death, disability, separation from service, age 59½, or hardship. Key points:
- Taxable withdrawals before 59½ generally face a 10% additional tax, with exceptions such as death, disability, and separation at 55 or later.
- Hardship distributions aren't automatically penalty-exempt and can't be rolled over.
- Loans, if offered, generally max out at 50% of the vested balance up to $50,000.
- Indirect rollovers generally must be completed within 60 days.
How Profit Sharing Compares With Other 401(k) Options
Deferrals vs. Profit Sharing vs. Match
Three funding approaches work differently:
- Deferrals: Employees fund these from their own pay
- Profit sharing: The employer funds it; contributions are discretionary and do not require employee saving
- Match: The employer contributes only when employees defer
Use a match to encourage saving. Use profit sharing for contribution flexibility and, with the right formula, higher owner savings.
Profit Sharing vs. a Cash Bonus
- Liquidity: a bonus pays now; profit sharing is locked up until a distribution event.
- Taxes: bonuses face payroll taxes and withholding; plan contributions don't.
- Vesting: bonuses are yours immediately; plan money may vest over time.
- Purpose: profit sharing builds retirement security. Some employees will prefer cash.
Revenue Sharing Is Different
Revenue sharing refers to investment-related payments to service providers, not employer profits. DOL Advisory Opinion 2013-03A addressed a provider that received such payments and credited a bookkeeping account toward plan expenses.
ERISA 408(b)(2) requires providers to disclose direct and indirect compensation, and fiduciaries must evaluate total compensation for reasonableness. Conflicts can also arise when an advisor earns commissions on insurance products.
A Practical Decision Framework
Work through these questions:
- How variable is cash flow? Variable favors discretionary profit sharing.
- How much should the owner save, and at what ages and pay levels?
- Do you want to reward participation (match) or reward everyone (nonelective)?
- What is turnover? High turnover makes vesting more valuable.
- What can the administrative budget support?
How to Set Up and Manage a Small-Business Plan
Setup Steps
- Define business and employee goals so contribution levels and eligibility fit your workforce.
- Review workforce and compensation data to model costs and nondiscrimination testing.
- Select plan features, starting with the items below.
- Adopt a written plan document that governs eligibility, contributions, and distributions.
- Establish the trust to hold plan assets for participants.
- Coordinate payroll and recordkeeping so deferrals and matches post on time.
When you select features, review:
- Eligibility and the profit-sharing allocation formula
- Vesting, contribution timing, and safe harbor options
- Investment menu, loans, distributions, and Roth features
- Participant communications and enrollment materials
Two newer rules affect many small sponsors. Startup credits can cover up to 100% of qualified costs for employers with 50 or fewer employees, within annual caps, for three years. Under IRC 414A, many new 401(k) plans must auto-enroll, with exceptions for employers with ten or fewer employees and businesses under three years old.
Ongoing Responsibilities
- Review fees and investments on a set schedule.
- Monitor service providers and document those reviews.
- Run required testing and file annual reports on time.
- Deposit contributions by the applicable deadlines.
- Communicate plan changes and education materials to employees.
- Document plan decisions and fiduciary processes.
Hiring an investment manager doesn't remove the duty to select and monitor that manager.
Where an Independent Fiduciary Adviser Helps
An adviser can support plan design discussions, investment selection and oversight, and participant education, while coordinating with tax, legal, recordkeeping, and administrative professionals. Lewis & Associates Capital Advisors, LLC, a registered investment adviser in North Carolina, offers plan design, fiduciary guidance, employee education, and investment oversight as an investment and retirement-planning resource. It is not the plan administrator.
Final Thoughts
A 401(k) profit-sharing feature gives a small business flexibility to fund employee benefits while building owner savings. The right design depends on your goals, workforce, and total cost, not just the lowest fee or simplest formula.
Compare formulas and total costs using current IRS rules and your real workforce data, with input from qualified tax, legal, administrative, and fiduciary professionals.
Frequently Asked Questions
What are the rules for profit sharing in a 401(k)?
A written plan document sets eligibility, the allocation formula, and vesting. Contributions must fit annual additions and deduction limits and pass nondiscrimination and coverage tests. Verify current IRS requirements each year.
Can I withdraw my profit-sharing from my 401(k)?
Only if the plan document permits it and you have a distributable event, such as separation from service or reaching a qualifying age. Withdrawals may bring income tax, a 10% early-distribution tax, or rollover options.
How is profit-sharing usually paid out?
Employers deposit it into a tax-advantaged retirement account rather than paying cash. Payout later takes the form the plan allows, such as a lump sum, installments, or an annuity.
What is 401(k) revenue sharing and how does it work?
Revenue sharing is investment-related payments or credits tied to plan services. It isn't an employer profit-sharing contribution.
Can a 401(k) be a profit-sharing plan?
Yes. A 401(k) can include a profit-sharing feature, allowing employee deferrals and discretionary employer contributions in one plan.
What's the difference between a profit-sharing plan and a 401(k)?
A standalone profit-sharing plan is employer-funded. A 401(k) permits employee salary deferrals. Many small businesses combine both.
