An ESOP works for a private company by creating a trust that buys company stock on behalf of employees, usually with borrowed money, and then releases those shares into individual employee accounts over years as the company pays the loan back with tax-deductible contributions. Roughly 90% of all ESOPs sit inside privately held companies, and about two-thirds of those companies are structured as S corporations. The plan is governed by ERISA and the Internal Revenue Code, which means the mechanics are largely set by federal law rather than by what the company or its owners might prefer.
The Basic Mechanics
Most private company ESOPs are leveraged. The company borrows money from a bank, from the selling shareholder, or from some combination of the two, and then lends that money to the ESOP trust. The trust uses the loan proceeds to buy shares, either from existing owners who want to cash out or newly issued shares from the company itself. Those purchased shares go into a suspense account inside the trust. They are not yet owned by any particular employee.
Each year, the company makes a contribution to the trust. The trust uses that contribution to make a loan payment. With each payment, a proportional slice of shares is released from the suspense account and allocated to individual employee accounts, generally based on each participant’s share of total eligible compensation. Over the life of the loan, the entire block of purchased stock moves from the suspense account into employee accounts.
A non-leveraged ESOP skips the loan entirely. The company contributes cash or newly issued shares directly to the trust each year, and the trust allocates those shares to employees immediately. It is simpler, but it does not accomplish the kind of large ownership transition a leveraged transaction does, which is usually the whole point for a private company.
Why Private Companies Use Them
The tax structure is the headline reason. The company can deduct contributions to the ESOP trust up to 25% of total eligible participant compensation each year.1Internal Revenue Service. Combined Limits Under IRC Section 404(a)(7) In a leveraged plan those deductible contributions cover both principal and interest on the loan, so the company is effectively buying out its own shareholders with pretax dollars.
Each participant’s account is subject to an annual addition ceiling under IRC Section 415(c). For 2026 that limit is $72,000.2Internal Revenue Service. COLA Increases for Dollar Limitations on Benefits and Contributions
Capital Gains Deferral for C Corporation Sellers
If the company is a C corporation, selling shareholders can defer their capital gains tax under IRC Section 1042. Three conditions have to line up. The ESOP must hold at least 30% of each class of outstanding stock (or 30% of total stock value) immediately after the sale. The seller must have held the shares for at least three years. And the seller must reinvest the proceeds into “qualified replacement property” during a window that opens three months before the sale and closes twelve months after it. Qualified replacement property means securities issued by a domestic operating corporation that gets no more than 25% of its gross receipts from passive investment income and is not the same company (or a member of the same controlled group) that issued the original shares.3Office of the Law Revision Counsel. 26 USC 1042 – Sales of Stock to Employee Stock Ownership Plans or Certain Cooperatives
Section 1042 is only available to C corporation shareholders. S corporation owners cannot use it.
S Corporation Pass-Through Benefit
S corporations get a different advantage. An ESOP trust is tax-exempt under IRC Section 501(a), and under IRC Section 512(e)(3) the S corporation income attributable to the trust’s ownership share is not treated as unrelated business taxable income. The practical result: if the ESOP owns 100% of an S corporation, the company pays no federal income tax. The cash that would otherwise go to tax is typically used to accelerate loan repayment or fund operations. This benefit is large enough that Congress built anti-abuse rules around it, which are covered further down.
Which Companies Can Sponsor One
Only C corporations and S corporations can sponsor an ESOP. Partnerships, LLCs taxed as partnerships, and sole proprietorships cannot. The company needs a formal payroll, enough consistent earnings to carry contributions and loan payments, and corporate bylaws that permit issuing shares to a trust. It also needs enough authorized but unissued shares, or shares available for purchase from existing owners, to fund the transaction.
How Employees Get In and Earn Their Shares
Federal law sets the floor on eligibility. A company cannot make employees wait past age 21, and it cannot require more than one year of service, defined as a 12-month period with at least 1,000 hours worked, before letting them participate.4Office of the Law Revision Counsel. 29 U.S. Code 1052 – Minimum Participation Standards A plan can be more generous but not stricter.
Participation does not mean ownership. Shares vest on a schedule, and federal law gives the company two choices. Under cliff vesting, employees become fully vested after three years of service and own nothing before that. Under graded vesting, ownership phases in at 20% per year starting after two years, reaching 100% after six.5U.S. Department of Labor. FAQs About Retirement Plans and ERISA Unvested shares are forfeited when an employee leaves, and they get reallocated among the remaining participants.
Because concentration in a single stock is risky, federal law gives older participants a way out. Employees who have reached age 55 and completed at least 10 years of plan participation can diversify. During a 90-day window following the close of each plan year within a six-year election period, they can direct the plan to move at least 25% of their account balance into other investments.6Internal Revenue Service. Employee Stock Ownership Plans – New Anti-Cutback Relief
Employees also get voting rights, but narrower than public shareholders have. On routine corporate matters the trustee votes. On major structural events, meaning a sale of substantially all the company’s assets, a merger, liquidation, recapitalization, reclassification, dissolution, or consolidation, participants direct the trustee’s vote on their allocated shares. Unallocated shares in the suspense account are voted by the trustee unless the company’s bylaws require mirroring the allocated-share vote.
What It Costs to Set Up and Run
The initial transaction typically runs between $150,000 and $500,000. That covers ERISA legal counsel, the independent stock valuation, trustee fees, plan document drafting, and third-party administration setup. Larger or more complex deals cost more.
Two documents form the foundation. The Plan Document spells out how the ESOP operates: vesting schedule, allocation formula, distribution rules, eligibility. The Trust Agreement creates the legal entity that holds the shares. The company also needs a current employee census (name, age, hire date, annual compensation) to drive allocations and track vesting.
Because private shares have no market price, an independent appraiser has to determine fair market value. Federal law requires that valuation at least annually.7U.S. Department of Labor. AICPA Comments on Definition of the Term Fiduciary – Section: Independent Appraiser Required by IRS An interim valuation may be needed if something major shifts the company’s value between annual appraisals, like a lost contract or a sudden revenue spike, and the trustee has to approve it.
Ongoing annual costs include the recurring valuation (commonly several thousand to tens of thousands of dollars depending on complexity), trustee fees, plan administration, and compliance filings.
The Repurchase Obligation
This is the part that catches companies off guard. When an employee at a private company receives a stock distribution from the ESOP, federal law gives them a put option: they can require the company to buy the shares back at current fair market value. The company cannot push the obligation onto the trust. The put must be exercisable during two 60-day windows, one right after the distribution and another in the following plan year.8Internal Revenue Service. Examining Employee Stock Ownership Plans (ESOPs)
For a growing company with an aging workforce, this obligation compounds. The share price rises, more employees retire, and the cash needed to buy shares back accelerates. The median private ESOP repurchases about 5% of its outstanding shares in a given year; some repurchase more than 10%. A periodic repurchase liability study is not legally required, but companies that treat the ESOP as a one-time transaction and ignore the repurchase trajectory tend to hit a cash crunch years later.
Ongoing Compliance
The administrative load does not go away after setup. Every ESOP files Form 5500 with the Department of Labor each year. For calendar-year plans the deadline is July 31 of the following year, extendable to October 15 by filing Form 5558. Missing it is expensive: the DOL assesses a per-day penalty, and the IRS separately charges $250 per day up to $150,000 for each late return.9Internal Revenue Service. Penalty Relief Program for Form 5500-EZ Late Filers A company that discovers missed filings before the DOL comes looking can reduce exposure through the Delinquent Filer Voluntary Compliance Program.
If the ESOP has 100 or more eligible participants on the first day of the plan year, it needs an annual independent financial audit under ERISA. Eligible participants include not just active employees but also former employees with account balances and beneficiaries of deceased participants. A plan with between 80 and 120 participants that filed as a small plan the prior year can keep doing so, but once the count hits 121 the audit kicks in.
The trustee carries real exposure through all of this. Every ESOP must have a trustee who holds the shares as legal owner, whether an internal officer or an outside institutional trustee, and the trustee is an ERISA fiduciary. The most consequential duty is making sure the trust pays no more than “adequate consideration” for the stock. For assets without a public market, that means fair market value determined in good faith through a prudent process: a qualified independent appraiser, complete and current information, and a trustee review that confirms the report is reasonable.10U.S. Department of Labor. Fact Sheet: Notice of Proposed Rulemaking Relating to Application of the Definition of Adequate Consideration Fiduciaries who breach these duties are personally liable for the plan’s losses.
Section 409(p) Testing for S Corporation ESOPs
The S corporation tax benefit is powerful enough that Congress wrote anti-abuse rules to stop a small group of insiders from capturing it. Under IRC Section 409(p), a “nonallocation year” is triggered when disqualified persons collectively own or are deemed to own at least 50% of the ESOP’s shares. A disqualified person is anyone who owns at least 10% of the ESOP shares, or 20% when family members’ holdings are counted together.11Internal Revenue Service. Preventing the Occurrence of a Nonallocation Year Under Section 409(p)
A nonallocation year brings excise taxes on the employer, deemed distributions to the disqualified persons that trigger immediate taxation, potential disqualification of the whole plan, and loss of S corporation status. The IRS has said there are no prescribed correction methods for a 409(p) violation, which is why testing annually, especially after ownership changes or headcount shifts, matters.11Internal Revenue Service. Preventing the Occurrence of a Nonallocation Year Under Section 409(p)
What Employees Actually Get Back
When a participant leaves the company because of death, disability, or reaching normal retirement age, distributions must begin during the next plan year. Normal retirement age under an ESOP cannot be set later than 65, or if later, the fifth anniversary of the participant joining the plan. Distributions can be paid as a lump sum or in substantially equal annual installments over up to five years.
If the ESOP still has an outstanding loan, the plan can delay distributing shares that were bought with that loan until the plan year after it is fully repaid. The delay cannot override the general rule, though: distributions must start no later than the 60th day after the close of the plan year in which the latest of these events happens: the participant turns 65 (or the plan’s normal retirement age, if earlier), the 10th anniversary of plan entry, or termination of employment.
Distributions taken before age 59½ are generally subject to the 10% early withdrawal penalty on top of ordinary income tax, consistent with other qualified retirement plans. One exception: dividends paid directly to participants from C corporation ESOP shares are exempt from the penalty.12Internal Revenue Service. Retirement Topics – Exceptions to Tax on Early Distributions
Taken together, the private company ESOP is a long-horizon arrangement: shares move slowly from the trust into employee accounts, vest over years, and eventually come back to the company in cash through the repurchase obligation. The tax code makes the economics work for both the selling shareholder and the company; ERISA sets the rules that protect the employees on the receiving end.