Profit Sharing Plans for Small Businesses: Setup, Testing, and Filings

To set up a profit sharing plan for your small business, you design the plan (choosing an allocation formula, a vesting schedule, and a compensation definition), adopt a written plan document and trust, obtain a fidelity bond, and give every eligible employee a Summary Plan Description. From there, running the plan means making a discretionary contribution each year, passing annual nondiscrimination tests, and filing Form 5500. The reward for that work is real: you can put up to $72,000 per employee into the plan in 2026, deduct every dollar, and skip contributions entirely in a year when cash is tight.1Internal Revenue Service. COLA Increases for Dollar Limitations on Benefits and Contributions

What You’re Actually Setting Up

A profit sharing plan is an employer-funded retirement account. The business decides each year whether to contribute and how much; employees don’t defer their own pay into it the way they would with a 401(k). Whatever you contribute is deductible, and the money grows tax-deferred until the employee takes a distribution.2Internal Revenue Service. Profit Sharing Plans for Small Businesses

The word “profit” is a bit misleading. You do not need to actually earn a profit to contribute. What defines the plan is discretion, which is why it fits businesses with uneven revenue.

Two dollar limits govern what you can put in. Per participant, annual additions cannot exceed the lesser of 100% of compensation or $72,000 in 2026.1Internal Revenue Service. COLA Increases for Dollar Limitations on Benefits and Contributions Across the whole plan, your total deduction is capped at 25% of the combined compensation of eligible employees.3Office of the Law Revision Counsel. 26 U.S. Code 404 – Deduction for Contributions of an Employer to an Employees Trust Excess contributions can be carried forward, but they also carry a 10% excise tax, so overshooting is expensive. Only the first $350,000 of any employee’s pay counts for these calculations.

Step 1: Decide Who Will Be Covered

Federal law sets a ceiling on how restrictive your eligibility rules can be. You cannot require an employee to be older than 21 or to have completed more than one year of service (1,000 hours in a 12-month period) before joining. You can be more generous. One exception lets you require up to two years of service, but only if the plan gives immediate 100% vesting.4Office of the Law Revision Counsel. 26 U.S. Code 410 – Minimum Participation Standards

Once someone qualifies, they must be admitted to the plan no later than the earlier of the next plan year’s first day or six months after they became eligible.4Office of the Law Revision Counsel. 26 U.S. Code 410 – Minimum Participation Standards Missing entry deadlines is one of the errors the IRS flags most often, and fixing it later costs more than getting it right at the outset.

Step 2: Choose an Allocation Formula

The allocation formula determines how your total annual contribution gets split among participants. This is the design decision that most affects how much money ends up in the owner’s account compared with the staff’s.

Pro-Rata

The simplest formula. Every participant receives the same percentage of pay. Contribute 10%, and a $50,000 employee gets $5,000 while a $150,000 owner gets $15,000. It’s easy to administer and inherently nondiscriminatory.

Permitted Disparity

Sometimes called Social Security integration. You contribute a higher percentage on compensation above the Social Security taxable wage base ($184,500 in 2026) than below it.5Social Security Administration. What Is the Maximum Amount of Earnings Subject to Social Security Tax The reasoning is that the employer already pays Social Security tax on wages below the base, so the plan can lean the other way. The extra rate above the base cannot exceed the base rate by more than the lesser of the base rate itself or 5.7 percentage points.6Office of the Law Revision Counsel. 26 U.S. Code 401 – Qualified Pension, Profit-Sharing, and Stock Bonus Plans With a 5% base, for instance, you could go up to 10% on pay above the wage base. This favors higher earners without breaking nondiscrimination rules.

Cross-Testing

Also called new comparability. Instead of comparing contribution rates, the plan compares projected retirement benefits. An older owner has fewer years until retirement, so a larger current contribution produces roughly the same projected benefit as a smaller one for a younger employee. That justifies a much higher rate for the owner group. Cross-testing requires annual actuarial work, and every non-highly compensated employee must receive at least the lesser of one-third of the highest rate given to any highly compensated employee, or 5% of pay.7Internal Revenue Service. LRM 94 on Cross-Tested Profit-Sharing Plans That gateway contribution is the price of the extra flexibility.

Step 3: Set Vesting and Define Compensation

Because the employer funds everything, the law lets you make employees earn ownership of their account over time. You get two vesting options:

  • Cliff vesting. 0% until the employee hits three years of service, then 100% all at once.
  • Graded vesting. 20% at two years, rising to 100% at six years.

Those are the slowest schedules the law allows. You can always vest faster, and many small businesses choose immediate vesting to keep the recordkeeping simple.8Internal Revenue Service. Retirement Topics – Vesting When an employee leaves before full vesting, the unvested portion is forfeited; the plan document decides whether forfeitures reduce future contributions or get reallocated among remaining participants.

You also have to pick a compensation definition and apply it consistently. Most plans use W-2 Box 1. Sticking with one of the IRS-approved safe harbor definitions avoids a separate annual test on the compensation formula itself.9Internal Revenue Service. Compensation Definition in Safe Harbor 401(k) Plans

Step 4: Adopt the Plan Document and Trust

Two legal documents bring the plan into existence. The plan document is the governing contract spelling out eligibility, contributions, allocations, vesting, and distributions. The trust is the separate legal entity that actually holds plan assets for the exclusive benefit of participants. All contributions flow into the trust, all investments sit inside it, and the trustee is legally responsible for safeguarding the money.

Most small businesses use a pre-approved plan document (sometimes called a prototype or volume submitter) that the IRS has already reviewed. That is far cheaper than paying an attorney to draft a custom document.

The adoption deadline is generous. Under the SECURE Act, you can sign the plan document as late as the due date of your business tax return, including extensions, and treat the plan as effective on the last day of the prior tax year.10Internal Revenue Service. Issue Snapshot – Deductibility of Employer Contributions to a 401(k) Plan Made After the End of the Tax Year A calendar-year C corporation on the automatic six-month extension could adopt a plan as late as October 15, 2027, effective December 31, 2026.11U.S. Department of Labor. Profit Sharing Plans for Small Businesses That gives you time to see full-year financials before committing.

Step 5: Buy a Fidelity Bond and Send the SPD

Any plan with more than one participant must carry a fidelity bond covering every person who handles plan funds. The bond has to equal at least 10% of the plan assets handled in the prior year, with a floor of $1,000 and a ceiling of $500,000 ($1,000,000 for plans holding employer securities).12Office of the Law Revision Counsel. 29 U.S. Code 1112 – Bonding It must be issued by a corporate surety approved by the U.S. Treasury. Skipping the bond is an ERISA violation and shows up as a red flag in any audit.

You also have to give every eligible employee a Summary Plan Description, a plain-language document explaining how the plan works, how vesting operates, how to file a claim, and what happens to their account if they leave. The deadline is the later of 90 days after an employee becomes a participant or 120 days after the plan first becomes subject to ERISA.13eCFR. 29 CFR 2520.104b-2 – Summary Plan Description

Tax Credits That Cut Your Setup Cost

Under IRC Section 45E as expanded by SECURE 2.0, a business with 50 or fewer employees can claim 100% of qualified startup costs (administrative expenses, document preparation, employee education) up to $5,000 per year for the plan’s first three years. Businesses with 51 to 100 employees get 50% under the same ceiling. The credit is calculated as $250 times the number of non-highly compensated employees eligible for the plan, capped at $5,000.

A second credit covers part of your actual employer contributions for the first five years: 100% in years one and two, then 75%, 50%, and 25%, up to $1,000 per employee per year. It’s available in full for businesses with up to 50 employees and phases out from 51 to 100. Together the two credits can materially reduce what launching the plan actually costs.

If You’re Self-Employed

Sole proprietors, partners, and LLC members taxed as pass-throughs can set up a profit sharing plan covering themselves, but the contribution math works differently. Your “compensation” is your net self-employment income, reduced by the deductible half of self-employment tax and by the plan contribution itself.14Internal Revenue Service. Self-Employed Individuals – Calculating Your Own Retirement Plan Contribution and Deduction

Because the contribution is subtracted from the income used to compute it, the formula is circular. The IRS resolves that with a reduced rate. If your plan calls for a 25% contribution, your effective rate on net self-employment income is about 20% (25% divided by 125%). A sole proprietor can’t put in quite as high a percentage of gross income as a salaried owner of a corporation. Run the numbers with a tax professional before your first deposit.

Your Annual Obligations Once the Plan Is Live

Setup is a one-time job. Compliance is forever.

Making the Contribution

After the plan year ends, you decide how much to contribute and deposit it into the trust. The contribution is deductible for the year in which it’s allocated, even if you deposit it after year-end, as long as it goes in before your business tax return deadline including extensions.10Internal Revenue Service. Issue Snapshot – Deductibility of Employer Contributions to a 401(k) Plan Made After the End of the Tax Year

Nondiscrimination Testing

The IRS tests every year that the plan isn’t tilted too far toward highly compensated employees. For 2026, a highly compensated employee is anyone who owned more than 5% of the business during the current or prior year, or earned more than $160,000 the previous year.1Internal Revenue Service. COLA Increases for Dollar Limitations on Benefits and Contributions

The main tests:

Most small business profit sharing plans are top-heavy in the early years, when the owner’s account is most of the plan. Budget for that 3% minimum as a baseline cost.

Form 5500

Every plan files an annual return with the DOL and IRS on the Form 5500 series.19U.S. Department of Labor. Form 5500 Series Small plans (generally fewer than 100 participants at the start of the year, meeting certain asset conditions) can use the shorter Form 5500-SF. The deadline is the last day of the seventh month after plan year-end, which is July 31 for a calendar-year plan. Filing Form 5558 before the deadline gets you an automatic 2½-month extension, pushing the due date to October 15.20Internal Revenue Service. About Form 5558

Late-filing penalties are severe. The DOL can charge $2,739 per day. The IRS separately charges $250 per day, up to $150,000 per return.21Internal Revenue Service. Penalty Relief Program for Form 5500-EZ Late Filers They stack, and they start the day after the deadline.

Independent Audit

Plans covering 100 or more participants with account balances at the beginning of the year need an annual audit by an independent CPA. Most small business plans never reach that threshold, but rapid hiring can push you over faster than you expect. An 80-120 transition rule gives some cushion: if you previously filed as a small plan and participant count stays below 121, you can keep filing without an audit.

Fiduciary Duty

Whoever is named plan fiduciary (often the owner) has a continuous legal duty to act solely in participants’ interests: monitor investments, keep fees reasonable, follow the plan document. If your plan lets participants direct their own investments and you meet ERISA Section 404(c) (a broad range of choices, sufficient information, real participant control), you’re generally shielded from liability for losses caused by their investment choices.22eCFR. 29 CFR 2550.404c-1 – ERISA Section 404(c) Plans That shield does not extend to bad fund selection by the fiduciary.

Optional Feature: Participant Loans

You decide at setup whether the plan will allow participants to borrow from their accounts. If it does, the maximum loan is the lesser of $50,000 or 50% of the participant’s vested balance, and repayment generally has to happen within five years through substantially level payments made at least quarterly. Loans for a primary residence can run longer.23eCFR. 26 CFR 1.72(p)-1 – Loans Treated as Distributions A loan that violates these rules gets treated as a taxable distribution, with income tax and possibly the 10% early withdrawal penalty attached. Loans add administrative work, but they make the plan more attractive to employees who don’t want their money entirely locked up.

What Employees Will Face at Distribution

Setup happens years before anyone takes money out, but employees will ask, so it helps to know the shape of it. Distributions are taxed as ordinary income in the year received, and generally carry an additional 10% penalty if taken before age 59½.24Office of the Law Revision Counsel. 26 U.S. Code 72 – Annuities; Certain Proceeds of Endowment and Life Insurance Contracts Rolling the distribution into an IRA or another qualified plan preserves tax deferral; a direct rollover avoids the mandatory 20% withholding that applies when the participant takes the check personally.25Internal Revenue Service. Rollovers of Retirement Plan and IRA Distributions Required minimum distributions start by April 1 following the later of age 73 or retirement, but 5% owners must begin at 73 regardless of employment.26Internal Revenue Service. Retirement Topics – Required Minimum Distributions (RMDs)

If You Need to Shut It Down Later

If circumstances change, terminating the plan follows a set path. You amend the document to set a termination date, stop future contributions, and fully vest every participant immediately regardless of the vesting schedule.27Internal Revenue Service. Retirement Topics – Termination of Plan Someone who was 40% vested under graded vesting becomes 100% vested the moment the plan ends. That surprises some employers.

Then you notify participants, provide rollover notices, and distribute all assets as soon as administratively feasible (generally within 12 months). Participants can roll balances into IRAs or other qualified plans to keep the tax deferral going. You file a final Form 5500 with the “final return/report” box checked, showing zero assets and no active participants.28Internal Revenue Service. Terminating a Retirement Plan If any assets remain in the trust, you keep filing 5500s each year until the trust is empty. Filing Form 5310 to request an IRS determination letter confirming the plan was qualified at termination is optional, and offers extra protection against a later IRS challenge.