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Discount for Lack of Marketability (DLOM) is one of the most important valuation adjustments for privately held businesses because it recognizes a practical reality, an ownership interest that cannot be readily sold usually has less value than a comparable interest in a public company. In business appraisal, DLOM is not a formulaic add-on. It is an evidence-based judgment supported by empirical studies, option pricing logic, restricted stock analysis, pre-IPO transaction data, and the specific facts of the company being valued.

What DLOM Means in a Business Valuation

Marketability refers to how quickly and efficiently an owner can convert an equity interest into cash at or near its indicated value. Public company shares trade in active markets with daily pricing, broad buyer pools, and low friction. A privately held business interest does not. The owner may face contractual transfer restrictions, no ready market, limited buyer awareness, negotiation delays, information asymmetry, and often a lack of control over timing and pricing.

For valuation purposes, that illiquidity usually warrants a discount for lack of marketability. In fair market value engagements, the appraiser considers what a willing buyer would pay and what a willing seller would accept, with both parties informed and under no compulsion to act. IRS Revenue Ruling 59-60 remains foundational in this context, because it directs appraisers to evaluate all relevant factors affecting value, including the nature of the business, dividend-paying capacity, earnings history, and the marketability of the interest.

Why DLOM Matters to Owners, Buyers, and Tax Planning

DLOM is especially relevant when valuing minority interests, estate and gift tax transfers, shareholder disputes, buy-sell agreements, and transactions involving restricted equity. It can materially change appraised value, sometimes by double digits, and in certain cases even more when the ownership interest is both noncontrolling and difficult to sell.

For business owners, the impact is practical. A company may have strong EBITDA margins and command a healthy valuation multiple in the market, yet a minority stake may still merit a markdown because the holder cannot force distributions, cannot direct a sale, and cannot easily exit. That distinction matters in federal tax reporting, family transfers, litigation support, and recapitalizations.

It also matters in transaction planning. A stock sale may produce capital gain treatment, while an asset sale can trigger a mix of ordinary and capital outcomes depending on the assets involved. In some cases, owners also consider QSBS under Section 1202, where marketability, holding period, and entity structure can affect the economics of exit planning. DLOM does not determine tax treatment, but it can influence the reported fair market value that underlies transfer decisions and tax filings.

How Valuation Professionals Size DLOM

There is no single universally accepted percentage for DLOM. The right conclusion depends on the facts, but valuation professionals generally anchor their analysis in empirical studies and market-based models rather than intuition alone.

Restricted Stock Studies

One of the most cited sources of data comes from restricted stock studies. These studies compare the price paid for restricted shares of publicly traded companies, which cannot be freely resold for a period of time, to the price of otherwise identical freely traded shares. The observed price difference is often used as a proxy for illiquidity. Historically, these studies have shown discounts in a broad range, often around 15 percent to 35 percent, although findings vary by time period, company profile, and market conditions.

Appraisers use these studies carefully. Restricted stock data is informative because it reflects actual market behavior, but the subjects are public companies, not private businesses. Public shares still benefit from daily market visibility, analyst coverage, and prompt price discovery, so the data does not map mechanically to privately held stock.

Pre-IPO Studies

Pre-IPO studies compare prices paid for private company shares shortly before an initial public offering to the subsequent IPO price or trading price. These studies often produce larger implied discounts than restricted stock analysis, sometimes in the 20 percent to 50 percent range or more. That is because private company shares before an IPO generally lack both marketability and the benefit of public-company information infrastructure.

These studies can be useful when valuing private company interests, but they also require judgment. A company on the verge of an IPO may differ markedly from a mature closely held manufacturer, healthcare provider, SaaS business, or distribution company. The closer the subject company is to an eventual public-market exit, the more relevant the pre-IPO benchmark may become.

Option Pricing Models

Option pricing models treat marketability as a timing problem. If an owner cannot sell immediately, then the right to sell later has value, and the delay creates cost. These models use principles similar to financial options to estimate the economic value of liquidity restrictions. In valuation practice, they are sometimes applied through an average restricted period, expected volatility, dividend yield, and normalized risk-free rates.

This framework can be compelling because it ties DLOM to measurable assumptions rather than a single study result. However, it is only as strong as the assumptions behind it. A short holding period, low volatility, or anticipated distributions may support a smaller discount, while high volatility and long expected constraints may support a larger one.

Put Option and Protective Strategy Analysis

Some analyses compare the value of an illiquid interest to the value of a hypothetical liquid interest hedged by a put option or other protective strategy. The rationale is that a marketable asset offers flexibility that an illiquid one lacks. These models can help frame the economic cost of delay, transaction friction, and uncertain timing of conversion to cash.

In practice, valuation professionals often triangulate among methods. A well-supported conclusion may rely on restricted stock data, pre-IPO evidence, and an option-based analysis, then adjust the result for the company’s actual transferability, expected exit path, dividend policy, and control characteristics.

How DLOM Interacts with DCFs and Multiples

DLOM is often discussed separately from core valuation methods, but it should be understood in relation to them. A discounted cash flow analysis already reflects the riskiness of future cash flows through the discount rate, often built using WACC and company-specific premium judgment. Similarly, EBITDA, SDE, revenue, and ARR multiples are derived from market evidence that generally assumes a liquid trading environment or at least a reasonably active transaction market.

That means DLOM is not a substitute for fundamental valuation analysis. It is an adjustment that may be applied after establishing the value of the subject interest under the selected standard of value. For a private software company with strong net revenue retention, low churn, and recurring revenue visibility, the pre-discount enterprise value may be robust. Yet a minority equity interest may still require a marketability discount if the holder cannot readily monetize the stake.

In sectors with strong recurring revenue and durable gross margins, DLOM may be narrower if there is a credible liquidity path, such as a likely sale to a strategic buyer, sponsor recapitalization, or eventual public offering. In contrast, lower-growth businesses with concentrated customer risk, cyclical cash flows, or limited exit alternatives often justify a wider discount.

Typical Ranges and What Drives Them

There is no fixed DLOM range for every company, but valuation practice often produces conclusions in the approximate range of 15 percent to 35 percent for many private operating businesses, with higher or lower outcomes depending on facts and circumstances. The key drivers include expected holding period, profitability, dividend capacity, volatility, size of the indicated market, transfer restrictions, and whether the interest is minority or controlling.

A profitable HVAC contractor with steady SDE, moderate working capital needs, and a healthy local buyer market may support a different discount than a venture-backed software business with high growth but no near-term cash distributions. Likewise, a company with normalized earnings, clean financial statements, and a realistic sale process in a few years may justify a lower DLOM than a business with owner dependence, customer concentration, and uncertain transferability.

Control matters too. A controlling stake can often influence timing, distributions, and sale strategy, which may reduce the marketability concern. A minority stake usually cannot. In many assignments, the appraiser must analyze DLOM in tandem with a discount for lack of control, while avoiding double counting. The goal is to isolate each adjustment’s distinct economic effect.

Common Errors in Applying DLOM

One common mistake is treating DLOM as a generic percentage selected from habit. Another is applying the same discount to every company in a portfolio without considering industry, size, capital structure, or exit options. A third error is stacking multiple valuation reductions without checking whether they overlap. If a company-specific risk premium already captures much of the liquidity burden, then a large DLOM may overstate the impact.

Appraisers also need to distinguish between lack of marketability and lack of control, because those are not the same. A business owner may not be able to sell easily, but if the interest is controlling, the owner may still influence distributions or a sale process. Conversely, a minority owner may lack control even if a transfer could occur through a buy-sell arrangement. Precision matters.

Finally, some owners assume a healthy EBITDA multiple eliminates any need for discounting. That is not the case. A multiple may reflect enterprise value under marketable assumptions, but the appraised value of an actual ownership interest can still require adjustment for liquidity limitations, contractual restrictions, and the size of the market for the interest.

Conclusion

DLOM is a critical part of privately held business valuation because it bridges the gap between theoretical enterprise value and real-world ownership economics. The best conclusions are grounded in empirical evidence, supported by sound financial theory, and tailored to the company’s specific facts, capital structure, growth profile, transfer restrictions, and likely exit path.

If you are considering an estate transfer, shareholder buyout, litigation matter, or transaction planning exercise, a carefully supported DLOM analysis can make a meaningful difference in both valuation accuracy and tax defensibility. InteleK Business Valuations & Advisory helps United States business owners evaluate marketability discounts with rigorous, confidential, and well-supported appraisal analysis. Contact InteleK Business Valuations & Advisory to schedule a confidential valuation consultation.