Pre-IPO Company Valuation Discounts in 2026: What SDIRA Holders Need to Know Ahead of SpaceX, OpenAI, and Anthropic Valuations

Converting a pre-IPO position held inside a self-directed IRA (SDIRA) to a Roth IRA sounds straightforward on paper. In practice, it is one of the more technically demanding valuation problems we encounter. The taxable event is real, the IRS scrutiny is rising, and the underlying assets (SpaceX shares held through an SPV, OpenAI common units, Anthropic preferred interests) are among the hardest private securities to value with precision. This guide walks through what a defensible pre-IPO company appraisal for Roth IRA conversion requires, why discounts matter, and what happens when the documentation falls short.

Why Pre-IPO Assets in an SDIRA Create a High-Stakes Valuation Problem

When you convert any asset from a traditional IRA to a Roth IRA, that asset is treated as distributed at its fair market value on the date of conversion. You pay ordinary income tax on that amount in the year of conversion. For publicly traded securities, FMV is easy: it is the closing price on the conversion date. For a minority interest in a SpaceX SPV held through your SDIRA, there is no ticker, no daily quote, and no exchange. The value is whatever a qualified, independent appraiser can defend.

That gap between "no market price" and "IRS-acceptable FMV" is where most SDIRA holders get into trouble. Overstating value means you pay more tax than necessary. Understating it, without adequate documentation, opens you to accuracy-related penalties under IRC §6662. In either direction, the cost of a poorly supported valuation almost always exceeds the cost of doing it right from the start.

The pre-IPO names drawing the most SDIRA interest in 2026 include SpaceX, OpenAI, Anthropic, Stripe, Databricks, xAI, Revolut, Canva, and Lambda. These companies share a common trait: significant enterprise value, very limited secondary market liquidity, and complex capital structures that make even sophisticated investors uncertain about what their specific interest is actually worth.

What "Fair Market Value" Actually Means for a SpaceX, Anthropic, or OpenAI Position

Fair market value (FMV) is not what you paid for your position, not the last funding round valuation headline, and not what a secondary marketplace lists as an indicative bid. Treasury regulations define FMV as the price at which property would change hands between a hypothetical willing buyer and a hypothetical willing seller, neither being under compulsion to buy or sell, and both having reasonable knowledge of the relevant facts.

That definition matters enormously for pre-IPO positions. A willing buyer for your specific interest in a SpaceX SPV is not paying the same per-share price as SoftBank did in the latest preferred round. Your interest is:

• A minority stake with no control over governance, distributions, or an exit timeline

• Held through an SPV structure that adds its own layer of fees, waterfall provisions, and transfer restrictions

• Subject to contractual lock-ups or right-of-first-refusal clauses that limit your ability to sell

• Illiquid in a way that public shares, or even larger direct private placements, are not

A headline company valuation of $350 billion for SpaceX does not translate directly to your pro-rata slice of a fund that holds SpaceX preferred shares. The appraiser's job is to determine what your specific interest, in its specific legal and structural form, would trade for between informed, uncompelled parties on the conversion date.

The Three Valuation Approaches Appraisers Use for Pre-IPO Companies

Our valuation team applies one or more of the three standard approaches recognized by the American Society of Appraisers and required under USPAP. The choice of approach (and weighting) depends on the company's stage, available financial data, and the nature of the interest being valued.

The following table summarizes how each approach applies to high-profile pre-IPO tech and AI companies:

Approach	Method	Best Applied When	Limitations for Pre-IPO AI/Tech
Income Approach	Discount future economic income to present value (DCF)	Company has projectable cash flows or earnings history	Speculative projections; high sensitivity to discount rate assumptions
Market Approach	Compare to similar businesses or recent transactions; Revenue Ruling 59-60 framework	Comparable public companies or private transactions exist	Comparables are often imperfect; revenue multiples vary widely
Asset-Based Approach	Net asset value of tangible and intangible assets	Asset-heavy businesses; investment holding entities (SPVs)	Understates going-concern value for growth-stage companies

For SpaceX, OpenAI, and Anthropic SPVs, the market approach is typically the primary method. Appraisers look at the most recent preferred financing round price, any documented secondary market transactions in the same share class, 409A valuations (used for employee option pricing), and comparable public company trading multiples. The income approach plays a secondary role, particularly for companies with more mature revenue profiles like Stripe or Databricks.

For the SPV itself, the appraiser must also consider the SPV's governing documents: carried interest, management fees, waterfall provisions, and transfer restrictions. The IRA's interest in the SPV may be worth less than a proportional look-through to the underlying company shares, precisely because of those structural features.

Pro tip: Engage your appraiser before initiating the conversion paperwork. The valuation must be pegged to a specific conversion date. If you convert first and seek an appraisal afterward, you create a valuation-date problem that is difficult to repair and that the IRS is quick to flag.

Understanding Valuation Discounts: DLOM and Minority Interest

The two discounts that most directly affect the taxable value of a pre-IPO Roth conversion are the Discount for Lack of Marketability (DLOM) and the Discount for Lack of Control (DLOC), also referred to as the minority interest discount.

These are not aggressive tax strategies. They reflect economic reality. A willing buyer for a non-voting minority interest in a private company SPV, with no guaranteed exit, no trading market, and strict transfer restrictions, will not pay the same per-unit price as an investor acquiring a controlling stake in a liquid company.

Discount for Lack of Marketability (DLOM)

DLOM quantifies the value reduction attributable to the inability to quickly convert an asset to cash at a known price. The empirical support for DLOM is extensive:

• Restricted stock studies, which the IRS recognized in Revenue Ruling 77-287, show mean discounts ranging from roughly 26% to over 35% for publicly traded companies with restricted shares.

• Pre-IPO studies, examining transactions in private company stock within 5 months before an IPO, have found average discounts ranging from 27% to over 70%, depending on the time horizon and company characteristics.

• The Tax Court, in Estate of Davis v. Commissioner, 110 T.C. 530 (1998), held that pre-IPO studies should be used alongside restricted stock studies when determining DLOM for closely held interests.

For SpaceX and OpenAI SPV interests with strict contractual transfer restrictions and no guaranteed liquidity event timeline, DLOM at the higher end of documented ranges is often well-supported.

Discount for Lack of Control (DLOC)

DLOC reflects the fact that a minority holder cannot force a sale, compel distributions, replace management, or influence strategic direction. If your IRA holds 0.05% of an SPV that itself holds a small preferred tranche in OpenAI, you have essentially no control over any outcome. That economic reality reduces what a willing buyer would pay for your interest relative to a proportional share of enterprise value.

Combined DLOM and DLOC discounts for illiquid minority pre-IPO positions commonly fall in the range of 20% to 40% of undiscounted pro-rata value, sometimes higher depending on the specific facts.

Example: Suppose your SDIRA holds units in a SpaceX SPV with an undiscounted pro-rata value of $500,000 based on the most recent preferred round. A qualified appraiser applies a 20% DLOC and a 25% DLOM (applied sequentially, as is standard practice). The resulting FMV is approximately $300,000. You pay ordinary income tax on $300,000 at conversion rather than $500,000, a difference that can represent tens of thousands of dollars in tax savings, fully supported by documented valuation methodology.

How the IRS Evaluates Pre-IPO Valuations: Revenue Ruling 59-60 and the Mandelbaum Factors

Revenue Ruling 59-60 is the foundational IRS framework for valuing closely held business interests. It requires the appraiser to consider at least eight factors covering the nature and history of the business, general economic outlook, book value, earning capacity, dividend-paying capacity, intangible assets, prior sales of the stock, and comparable public company prices.

For DLOM specifically, the Tax Court's decision in Bernard Mandelbaum et al. v. Commissioner, T.C. Memo 1995-255 (1995), identified nine factors that appraisers and the IRS use to determine the appropriate magnitude of the discount. Our valuation team applies these factors in every pre-IPO conversion appraisal:

Mandelbaum Factor	Application to Pre-IPO SDIRA Interests
1. Financial condition of the company	Revenue trajectory, burn rate, balance sheet strength
2. Dividend policy	Most pre-IPO companies pay no dividends; increases DLOM
3. Nature and history of the company	Stage of development, revenue maturity, product-market fit
4. Management quality	Depth and stability of leadership team
5. Amount of control in the transferred shares	Non-voting SPV units warrant higher discounts than direct preferred shares
6. Restrictions on transferability	Contractual lock-ups and ROFR provisions; higher restrictions drive higher DLOM
7. Holding period	Longer expected holding periods before liquidity increase DLOM
8. Redemption policy	Absence of redemption rights increases illiquidity premium
9. Costs of a public offering	Estimated costs and uncertainty of an eventual IPO

A report that addresses each of these factors with company-specific data, rather than applying a generic percentage, is far more likely to withstand IRS review than one that simply states a discount figure.

The Penalty Risk: What Happens If Your Valuation is Wrong Under 6662

The IRS does not require a qualified appraisal for every Roth conversion. But when you convert an alternative asset, particularly a pre-IPO position with a large embedded gain, the risk of challenge is real and the penalty structure is steep.

Under IRC 6662, the IRS can impose:

• A 20% accuracy-related penalty on underpayments of $5,000 or more attributable to a valuation misstatement (defined as a valuation that is 150% or more of the correct value)

• A 40% penalty for a gross valuation understatement (defined as a valuation that is 200% or more of the correct value)

Those penalties apply on top of the tax owed and any interest that has accrued. On a $300,000 underpayment, a 40% penalty adds $120,000 before interest.

Watch out: The penalty risk runs in both directions. If the IRS determines your appraised value was too low (meaning you reported less taxable income than you should have), you face the accuracy and gross misstatement penalties. If it was too high, you overpaid tax unnecessarily. Neither outcome is acceptable when a defensible, well-documented appraisal prevents both.

Beyond income tax penalties, SDIRA holders must also be alert to prohibited transaction rules under IRC §4975. If you or a disqualified person (spouse, lineal descendants or ascendants, entities you control) has a direct economic relationship with the company whose stock the IRA holds, the investment may constitute a prohibited transaction. The consequence is severe: the IRA loses its tax-exempt status entirely, and all assets are treated as distributed as of January 1 of the year the transaction occurred. An additional 10% premature distribution penalty may also apply.

For SpaceX and similar companies, most SDIRA holders access the investment through third-party SPVs at arm's length, which generally avoids the prohibited transaction concern. But the structure should be reviewed carefully before any conversion is initiated.

What to Look for in a Qualified Appraiser for Your SDIRA Conversion

Not every business appraiser is equipped to handle a pre-IPO SDIRA conversion. The appraiser must be independent (no financial interest in the outcome), qualified (holding recognized credentials and demonstrating competency in business valuation), and contemporaneous (the report must reflect conditions as of the conversion date, not a later reconstruction).

For business valuations prepared in accordance with USPAP, our appraisers hold credentials from leading organizations including the American Society of Appraisers (ASA) and the National Association of Certified Valuators and Analysts (NACVA). These credentials require demonstrated competency in business valuation methodology, adherence to USPAP standards, and ongoing professional education.

When evaluating an appraiser for your SDIRA conversion, look for the following:

• Credentials from a recognized organization such as the ASA or NACVA, with demonstrated experience in private company valuation

• Explicit familiarity with Revenue Ruling 59-60 and the Mandelbaum factors for DLOM analysis

• Experience valuing SPV interests and look-through valuations for IRA or gift/estate tax purposes

• A report structure that clearly states the valuation date, the specific interest valued, the methodology applied, all discount analyses, data sources, and a signed statement of independence

• Willingness to engage before (not after) you initiate the conversion

Our private stock appraisal for IRA conversions covers the documentation requirements in detail, including what cap table data, financial statements, and shareholder agreement terms our valuation team needs to produce a defensible report.

Pro tip: Ask the appraiser directly whether their report will address each Mandelbaum factor individually and cite empirical support for the DLOM percentage applied. A report that jumps to a discount figure without that analysis will not hold up under IRS review.

Getting Your Pre-IPO Conversion Right in 2026

Pre-IPO positions in companies like SpaceX, OpenAI, and Anthropic represent some of the most complex valuation challenges in the SDIRA space. The stakes are high, the IRS is familiar with these strategies, and the documentation requirements are exacting. A defensible appraisal, prepared before conversion, grounded in Revenue Ruling 59-60, and fully supported by empirical DLOM analysis, is not optional. It is the foundation on which the entire tax position rests.

If you are holding a pre-IPO position in an SDIRA and considering a Roth conversion in 2026, the time to engage a qualified appraiser is before you move the asset. Our valuation team prepares USPAP-compliant business appraisals for SDIRA Roth conversions involving private company stock, SPV interests, and other alternative assets. Request an appraisal to start the conversation.

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Sources and Further Reading

• Fair market value definition and IRS guidance on valuing non-cash assets: IRS Publication 561

• Qualified appraiser framework and independence requirements: IRS Notice 2006-96

• Business valuation credentials and USPAP-compliant appraisal standards: American Society of Appraisers

• Business valuation credentials for IRA conversion appraisals: NACVA