DLOM vs DLOC: Understanding Valuation Discounts in Business Valuation

When valuing a private company or a specific ownership stake, two adjustments consistently shape the final number more than almost any other factor. These are the Discount for Lack of Marketability (DLOM) and the Discount for Lack of Control (DLOC). Together, they form the foundation of minority interest valuation, and misapplying either one can lead to costly errors in negotiations, tax filings, or court proceedings.

Both discounts reduce the value of an ownership interest. But they address entirely different problems. DLOM accounts for the practical difficulty of selling shares that have no ready market. DLOC reflects the disadvantage of owning a stake that carries no real decision-making power. Understanding the distinction is not just an academic exercise. It has direct financial consequences for business owners, estate planners, attorneys, CFOs, and investors navigating transactions or disputes.

This guide breaks down DLOM vs DLOC in full, covering definitions, calculation methods, practical applications, and the key differences between them. It also addresses what happens when both discounts apply to the same interest and why the sequencing of these adjustments matters enormously.

Key Takeaways

• DLOC reduces value to reflect the absence of decision-making authority in a minority of ownership interest.
  
• DLOM reduces value to reflect the difficulty of converting a private ownership stake into cash quickly.
  
• Both discounts are separate and can be applied to the same ownership interest, but sequencing matters to avoid double counting.
  
• DLOC typically ranges from 10% to 40%; DLOM commonly falls between 15% and 50%, depending on company-specific factors.
  
• The “levels of value” framework provides the conceptual foundation for applying these discounts correctly.
  
• Courts, the IRS, and Big 4 auditors all scrutinize DLOM and DLOC claims closely. Empirical support and proper documentation are essential.
  
• Common errors include conflating the two discounts, applying excessive percentages without support, and double-counting adjustments already embedded in cash flow projections.
  
• Transaction Capital LLC (TXN Capital LLC) applies both discounts rigorously across estate planning, shareholder disputes, litigation, and tax compliance engagements.
  

The Foundation of Business Valuation

Business valuation determines the economic worth of a company or partial ownership interest for purposes ranging from mergers and acquisitions and shareholder buyouts to divorce proceedings, estate and gift tax reporting, financial reporting under ASC 820, ESOP formations, bankruptcy reorganizations, and litigation support.

Valuation professionals examine historical financial performance, projected cash flows, industry conditions, economic risks, and comparable market data. However, the final value also depends heavily on the specific characteristics of the ownership interest being valued. A 100% controlling stake in a company is inherently more valuable than a 15% minority position in the same business. Similarly, shares that can be sold immediately on a public exchange are worth more than identical shares locked inside a private company with no active buyer market.

This is where the levels of value framework become essential. Valuation professionals typically recognize four primary levels:

• Strategic Control Value: The highest level, reflecting the synergies a strategic buyer might realize after an acquisition.
  
• Financial Control Value: Value to a financial buyer who gains the ability to control operations and set up policy.
  
• Minority Marketable Value: Value of a non-controlling interest; assuming shares are freely tradable on a public market.
  
• Minority Non-Marketable Value: The lowest level, reflecting both the absence of control and the absence of liquidity.
  

DLOC and DLOM serve as bridges between these levels. They allow valuers to adjust from one level to another based on the actual rights and restrictions attached to the interest being valued. Starting from the wrong level or adjusting in the wrong direction leads to distorted conclusions that will not hold up under scrutiny.

What Is DLOC (Discount for Lack of Control)?

The Discount for Lack of Control (DLOC) is a downward adjustment applied when an ownership interest lacks voting power or decision-making authority relative to a controlling position. Minority shareholders generally cannot dictate company strategy, force dividend payments, appoint or remove directors, approve major transactions, or compel a sale of the business.

These limitations make minority interests less attractive. A controlling owner can optimize operations, redirect resources, negotiate better terms with suppliers and customers, and decide the timing and size of distributions. A minority holder simply does not have these levers, and the price they can command for their interest reflects that reality.

Real-World Example: A company carries a controlling enterprise value of $20 million. A 10% interest on a pro-rata basis equals $2 million. If analysis supports a 25% DLOC, the minority interest value becomes $1.5 million ($2 million multiplied by 1 minus 0.25).

DLOC is particularly relevant in shareholder disputes, family limited partnership (FLP) transfers, estate planning, divorce cases involving closely held businesses, and ESOP valuations. The size of the discount depends on several factors:

• Voting versus non-voting share class structure
  
• Protective provisions in shareholder or operating agreements
  
• Board representation rights held by the minority
  
• Dividend history and distribution policies
  
• State law protections available to minority holders
  
• Overall ownership percentage and how remaining shares are distributed among other owners
  

It is important to note that DLOC does not apply universally. If the starting value is already derived from minority-level trading multiples, applying an additional DLOC would constitute double counting. The level of value from which you start determines whether an adjustment for control is needed at all.

How Is DLOC Calculated?

The most widely used approach draws on control premium studies. Analysts review merger and acquisition data to determine the average premium paid for controlling interests above the prevailing public trading price. The DLOC is then derived using the formula:

DLOC = 1 – (1 / (1 + Control Premium))

For example, if studies indicate a 30% control premium, the implied DLOC is approximately 23%.

Other approaches include income-based modeling, which compares projected cash flows under a controlling versus minority scenario, and rights-based analysis, which examines the specific governance documents and legal protections attached to the interest.

What Is DLOM (Discount for Lack of Marketability)?

The Discount for Lack of Marketability (DLOM) addresses a different problem entirely. It reflects the reality that private company shares are difficult to sell quickly, if at all. Unlike publicly traded stocks with active exchanges, real-time pricing, and large pools of ready buyers, private shares typically involve lengthy negotiations, extensive due diligence, transfer restrictions, and uncertain exit timelines.

Investors demand compensation for this illiquidity in the form of a lower purchase price. Holding a private interest carries risks that publicly traded shares do not: a longer holding period before any exit becomes possible, a much smaller pool of potential buyers, higher transaction costs, and the risk that company performance or market conditions deteriorate before a sale can close.

Practical factors can moderate or amplify DLOM. Strong operating performance, a clear path to a liquidity event such as an acquisition or IPO, and minimal transfer restrictions all tend to reduce it. Conversely, strict buy-sell restrictions, poor financial transparency, weak industry liquidity, or a troubled operating history tend to push it higher.

It is also worth noting that DLOM is not exclusive to minority interests. Controlling interests in private businesses can also face marketability challenges. A 100% ownership position in a closely held company is not liquid in the way that public shares are. Even a majority but less-than-100% controlling stake may require an extended sale process, during which the time value of money erodes the eventual proceeds. This extended selling period can produce a DLOM even at the controlling interest level.

Methods for Determining DLOM

Several empirical approaches are used to quantify DLOM. The Mandelbaum v. Commissioner case established a widely referenced set of ten factors that analysts consider, including company financial performance and outlook, dividend-paying capacity, the nature of the business and industry, management quality and depth, the degree of control (which often interacts with DLOC), transfer restrictions, expected holding period, redemption policies, and costs associated with a potential public offering.

The most common quantitative methods include:

• Restricted Stock Studies: Compare prices of restricted shares of public companies to their freely traded counterparts. Typical discounts range from 20% to 35%.
  
• Pre-IPO Studies: Analyze price differences between pre-IPO transactions and post-IPO trading values. These studies often indicate higher discounts of 40% or more.
  
• Option Pricing Models (OPM): Use option concepts to quantify the cost of illiquidity, incorporating volatility, time to liquidity, and risk-free rates. This method is particularly useful for interests where a defined holding period can be estimated.
  
• Quantitative Marketability Discount Models: Advanced proprietary models that blend empirical data with company-specific variables for a more tailored result.
  

No single method is definitive. Experienced valuation professionals typically apply multiple methods and triangulate a range before settling a supportable conclusion.

DLOM vs DLOC: Key Differences at a Glance

While both discounts reduce the final value of a private ownership interest, they address distinct issues and are grounded in different analytical frameworks. The table below summarizes the core distinctions:

Feature	DLOC	DLOM
What It Addresses	Lack of decision-making power and governance influence	Lack of liquidity and ability to sell quickly
Who It Affects	Primarily minority interest holders	Both minority and controlling interests in private companies
Typical Range	10% to 40%	15% to 50%
Key Calculation Methods	Control premium studies, rights-based analysis, income modeling	Restricted stock studies, pre-IPO studies, option pricing models
Primary Use Cases	Shareholder disputes, FLP transfers, estate planning, ESOPs	All private company valuations, minority transfers, tax filings
IRS Scrutiny Level	High in estate and gift tax filings	High in estate, gift, and family entity transfers
Landmark Case	Estate of Gallagher v. Commissioner	Mandelbaum v. Commissioner
Can Apply to Controlling Interests?	No — by definition, controlling interests have control	Yes — even controlling owners face illiquidity in private companies

How DLOC and DLOM Work Together

In many valuations, both discounts apply to the same ownership interest. A minority stake in a private company typically lacks both control and marketability, meaning the valuer must account for both adjustments to arrive at the correct minority non-marketable value.

The order of application matters. Proper sequencing typically starts at the control level, applies DLOC to reach the minority marketable level, and then applies DLOM to reach the minority non-marketable level. Reversing this order or applying both discounts from the same starting point can produce misleading results.

The interrelation between DLOC and DLOM also requires care. A lack of control can affect marketability, since a minority holder who cannot compel with a sale has fewer exit options. Conversely, a controlling position with severe transfer restrictions may still warrant a DLOM. The two discounts interact in ways that demand company-specific analysis rather than generic table lookups.

The Estate of Gallagher v. Commissioner recognized the importance of tailoring marketability factors to the specific investment being valued. The court emphasized that a one-size-fits-all approach to DLOM is inappropriate. Similarly, Mandelbaum v. Commissioner stressed the need to distinguish between DLOC and DLOM based on the specific facts, rather than applying a generic discount across both.

Applications in Shareholder Disputes and Tax Matters

Shareholder Disputes

In contested shareholder matters, minority owners frequently challenge the application of these discounts. They argue that oppressive conduct by majority shareholders or a quasi-partnership relationship between the parties justifies fair value without discounts. Majority owners emphasize the economic realities of minority status and illiquidity.

Courts weigh a range of factors when deciding appropriate discounts: the terms of shareholder agreements, any history of majority oppression, applicable state statutory protections, and whether the business has operated as a partnership in practice. The outcome varies significantly by jurisdiction, which is why the expert who presents the valuation must understand both the economic arguments and the relevant legal framework.

Estate and Gift Tax Planning

In tax valuations, the IRS scrutinizes DLOM and DLOC claims with particular intensity. Aggressive discounting in estate and gift tax returns, family limited partnerships, and intergenerational transfers has historically drawn up an IRS challenge. A defensible, well-documented report prepared by a qualified appraiser is essential to withstanding audit and potential Tax Court proceedings.

Under IRS Revenue Ruling 59-60, all eight prescribed factors must be addressed in writing for closely held business interests. DLOC and DLOM must be quantified with empirical support. Unsupported discounts are routinely disallowed by the IRS and the Tax Court. Combined, DLOC and DLOM discounts can legitimately reduce the taxable value of a transferred business interest by 20% to 40%, making proper documentation worth significant real dollars.

Common Pitfalls in Applying Valuation Discounts

Experienced valuers observe the same mistakes appearing repeatedly in less rigorous work:

• Conflating or confusing DLOM and DLOC as if they serve the same purpose
  
• Applying excessive discount percentages without sufficient empirical or company-specific support
  
• Double-counting adjustments already embedded in cash flow projections or market multiples
  
• Ignoring the specific rights and restrictions contained in governing documents
  
• Failing to account for current market conditions or recent shifts in industry liquidity
  
• Applying a minority discount on top of already-minority-level trading multiples
  
• Using control premium data from synergy-heavy strategic deals to support discounts in non-synergistic contexts
  

Each of these errors can undermine credibility in negotiations, litigation, or IRS examination. They also expose the parties relying on the report to outcomes that do not reflect the actual economics of the situation.

Emerging Trends in Valuation Discount Analysis

The field continues to advance. Greater reliance on data analytics and real-time market benchmarking is improving the precision of both DLOC and DLOM estimates. Regulatory bodies, including the IRS, are increasing scrutiny of discount claims, and courts are refining their approaches to fairness in shareholder matters.

Cross-border valuations and the growth of intangible asset-heavy businesses are creating new challenges in quantifying marketability and control of discounts. For technology companies, SaaS businesses, and other IP-driven enterprises, traditional restricted stock studies may not capture the full complexity of illiquidity risk. Option pricing models are gaining traction as a more dynamic alternative in these contexts.

ESG considerations are also beginning to influence business valuations, including how risk factors tied to governance quality are reflected in discount levels. Companies with weak governance structures may see higher DLOC adjustments as investors place a larger premium on effective oversight.

Why Transaction Capital LLC Stands Out for Discount Analysis

When complex discount analyses are required, Transaction Capital LLC, also known as TXN Capital LLC, has established itself as one of the most respected valuation firms in the United States. The firm specializes in delivering sophisticated, independent, and court-ready business valuations for shareholder disputes, tax compliance, litigation support, and strategic corporate transactions.

TXN Capital LLC excels in the nuanced application of DLOM and DLOC across diverse contexts, including minority interest valuations, oppression claims, estate and gift tax matters, divorce proceedings, and fairness opinions. With over 2,500 completed valuations across 50+ industries and 15+ years of experience in investment banking and valuation, the firm brings both depth and breadth to every engagement.

All valuation reports are prepared and certified by professionals holding credentials that the IRS and Big 4 auditors verify first:

• ABV (Accredited in Business Valuation) issued by the AICPA
  
• ASA (Accredited Senior Appraiser) issued by the American Society of Appraisers
  
• CVA (Certified Valuation Analyst) issued by NACVA
  
• MRICS (Member of the Royal Institution of Chartered Surveyors)
  

Reports comply with USPAP, SSVS, and NACVA professional standards. Every engagement includes post-valuation audit defense and IRS inquiry support at no additional charge. The firm’s flat-fee pricing starts at $500, with standard engagements delivered in 3 to 5 business days.

Conclusion

Mastering the distinction between DLOM and DLOC is fundamental to producing credible private company valuations. DLOC captures the disadvantages of minority status and the absence of governance influence. DLOM reflects the practical difficulties of converting an illiquid private interest into cash. Applied thoughtfully and supported by robust analysis, these discounts ensure that valuations reflect economic reality rather than theoretical pro-rata shares.

Whether navigating a contested shareholder buyout, preparing an estate tax filing, or providing litigation support, engaging qualified valuation professionals helps avoid costly errors and strengthens outcomes. Transaction Capital LLC has built its reputation on technical excellence, professional credentials, and a consistent commitment to objective, defensible analysis. Their ABV, ASA, CVA, and MRICS credentialed experts deliver the sophisticated, court-ready work that clients, attorneys, and the IRS demand.

Understanding and properly applying valuation discounts is not just good practice. It is a financial safeguard that protects your interests in every situation where the value of a private business is at stake.

Frequently Asked Questions (FAQs)

1. What does DLOM stand for, and what does it mean?

DLOM stands for Discount for Lack of Marketability. It reduces the value of a private ownership interest to reflect how difficult it is to sell those shares quickly without significant cost or delay.

2. What is DLOC in business valuation?

DLOC stands for Discount for Lack of Control. It is applied when an ownership interest lacks the voting power to influence company decisions, set policy, or compel distributions.

3. What is the main difference between DLOM and DLOC?

DLOC relates to governance rights and decision-making authority. DLOM relates to liquidity and the ability to sell. Both reduce value but address entirely different economic realities.

4. Can both DLOM and DLOC be applied to the same ownership interest?

Yes. Most minority interests in private companies lack both control and marketability. Both discounts can apply, but sequencing matters to avoid double counting.

5. What are the typical percentage ranges for these discounts?

DLOC typically ranges from 10% to 40%. DLOM commonly falls between 15% and 50%. The exact figure depends on company-specific facts, governing documents, and market conditions.

6. How do valuation experts calculate DLOC?

Analysts use control premium studies from M&A data. The formula is: DLOC = 1 minus (1 divided by 1 plus the control premium). Rights-based analysis of governing documents is also applied.

7. What methods are used to calculate DLOM?

The four main methods are restricted stock studies, pre-IPO studies, option pricing models, and quantitative marketability discount models. Valuers typically apply more than one and triangulate a range.

8. Why do the IRS and courts scrutinize these discounts closely?

Because both discounts can significantly reduce taxable values in estate and gift transactions. Unsupported or inflated discounts are routinely challenged and disallowed without proper empirical backing.

9. How do courts treat DLOM and DLOC in shareholder disputes?

Courts look at shareholder agreements, majority conduct, business relationship history, and state law. In some cases, discounts are reduced or eliminated where oppression or a quasi-partnership is found.

10. Why should I work with Transaction Capital LLC for DLOM and DLOC analysis?

Every report is prepared by ABV, ASA, CVA, or MRICS for credentialed appraisers. Reports are USPAP compliant, empirically supported, and built to hold up in IRS examination or court. Flat-fee pricing starts at $500 with delivery in 3 to 5 business days.

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