What Investments are PROHIBITED in a Self-Directed IRA?

One of the biggest advantages of a Self-Directed IRA (SDIRA) is the ability to invest beyond publicly traded stocks — into real estate, private equity, precious metals, cryptocurrency, promissory notes, tax liens, and more. But a Self-Directed IRA isn’t the Wild West. The IRS imposes specific rules on non-permissible investments and prohibited transactions, and violating them can put your entire IRA’s tax-advantaged status at risk. Below, we break down exactly what’s off-limits and why.

Watch: A full breakdown of prohibited and disallowed investments in a Self-Directed IRA.

What Is a Truly Self-Directed IRA?

Some custodians label their accounts “self-directed” when investors can really only choose among stocks and mutual funds. A truly Self-Directed IRA allows investment in equities and alternative assets, including real estate, private equity, precious metals, and cryptocurrency. The tradeoff for this flexibility is that account owners must understand the federal rules governing prohibited transactions found in IRC Section 4975(c) — rules designed to stop IRA owners from self-dealing or personally benefiting from investments made inside the IRA.

Info: There are two separate concerns to understand — non-permissible (disallowed) investments, which an IRA can never own, and prohibited transactions, which are otherwise-allowed investments done the wrong way (e.g., real estate purchased from a disqualified person).

Investments a Self-Directed IRA Can Never Own

The Internal Revenue Code places relatively few restrictions on the types of assets a Self-Directed IRA may hold, but there are two categories that are absolutely off-limits:

Life Insurance Contracts

An IRA can never invest in a life insurance contract. Don’t confuse this with the rules for a Solo 401k, which does permit life insurance investments — that exception simply does not extend to IRAs.

S Corporation Stock

Because an IRA is technically a retirement trust, it cannot be a shareholder of an S corporation — that’s an S-corp eligibility rule, not an IRA-specific one. An IRA is permitted to hold shares of a C corporation.

Investment Type	Allowed in a Self-Directed IRA?
C Corporation stock	✅ Allowed
S Corporation stock	❌ Prohibited
Life insurance contracts	❌ Prohibited
Real estate	✅ Allowed (with restrictions)
Private equity / private companies	✅ Allowed (with restrictions)
IRS-approved gold, silver, platinum, palladium	✅ Allowed (with restrictions)

Collectibles Are Off-Limits

The Self-Directed IRA regulations do not permit investment in collectibles. This includes:

Works of art, rugs, and antiques
Gems and certain metals
Stamps and coins (outside the precious-metals exception below)
Alcoholic beverages, such as collectible wine or liquor

Example: In 2026, a Self-Directed IRA purchases a $100,000 case of fine wine. Because collectibles are disallowed, the $100,000 (plus any gains) is treated as a taxable distribution in 2026, and the IRA owner receives a Form 1099-R for that amount. The rest of the IRA remains intact and unaffected.

Warning: A disallowed collectible purchase doesn’t shut down the whole IRA immediately — but the amount used for that purchase is treated as a deemed distribution in the year it occurred. If the IRA owner is under age 59½, that distribution is also subject to a 10% early distribution penalty, plus applicable federal and state income taxes.

Are Gold and Precious Metals Prohibited?

Not necessarily. Although precious metals technically fall under the general collectibles rule, IRC Section 408(m) carves out an exception for certain qualifying coins and bullion. As long as the Self-Directed IRA is structured to allow alternative investments, it can hold gold, silver, platinum, and palladium — but not every product qualifies.

Info: Only IRS-approved precious metals qualify — for example, Canadian Maple Leaf coins and American Eagle coins. Not every gold or silver product on the market is eligible for IRA ownership.

Can a Self-Directed IRA Own Real Estate?

Yes. Real estate — single-family homes, multi-family properties, commercial real estate, raw land, farmland, and more — is an allowed Self-Directed IRA investment. However, the property cannot be purchased from a disqualified person, such as the IRA owner personally, a spouse, parents, or children. A Self-Directed IRA also cannot purchase property currently or previously owned by the IRA owner’s business.

Warning: You cannot get around these rules with an indirect “strawman” transaction — for example, selling a property you own to a neighbor who then sells it to your Self-Directed IRA. If you cannot do something directly, you cannot do it indirectly either.

Private Equity and Private Company Investments

A Self-Directed IRA can invest in private companies — a private C corporation, an LLC, a partnership, or a venture fund. However, two restrictions apply:

The IRA owner (or certain family members) cannot work for the entity the IRA invests in.
The IRA owner generally cannot own 50% or more of that private entity, whether through personal funds, Solo 401k funds, Self-Directed IRA funds, or any combination.

Prohibited Transactions Under IRC Section 4975

IRC Section 4975 restricts transactions between a Self-Directed IRA and certain related parties known as disqualified persons. Even when the underlying asset (like real estate) is an allowed investment, the transaction itself can still be prohibited.

Who Counts as a Disqualified Person?

Disqualified Person	Relationship to the IRA
IRA owner	The account holder personally
Spouse	Immediate family
Parents and grandparents	Lineal ascendants
Children and their spouses	Lineal descendants
CPA, custodian, or other service providers	Anyone providing services to the IRA

Common Prohibited Transaction Examples

Prohibited Action	Why It’s Disallowed
Selling or exchanging personal property with the IRA	A sale or exchange between the IRA and a disqualified person
Personally using IRA-owned real estate	Personal benefit, even at fair market rent
Renting IRA-owned property to a child	Benefits a disqualified person
Borrowing money from your IRA	Treated as a taxable distribution (unlike a Solo 401k loan)
Personally guaranteeing an IRA loan	Indirect personal benefit / self-dealing
Using IRA funds as collateral for a personal loan	IRA assets cannot secure personal obligations
Paying yourself for services to the IRA	Self-dealing / personal compensation
Performing “sweat equity” repairs yourself	Providing personal services to the IRA is disallowed

Info: A non-recourse loan made directly to the Self-Directed IRA — where the IRA itself makes the payments — is allowed. What’s prohibited is the IRA owner personally guaranteeing that loan.

Example: A Self-Directed IRA owns a rental property. All related expenses — property taxes, water, and electric bills — must be paid directly from the IRA’s own funds, never from the IRA owner’s personal bank account.

Consequences of a Prohibited Transaction

Important: Unlike a disallowed collectible purchase (which only affects the amount invested), a true prohibited transaction under IRC 4975 causes the entire Self-Directed IRA — including cash and other holdings — to become subject to taxes and penalties in the year the prohibited transaction occurred.

Key Takeaway

A Self-Directed IRA opens the door to a far wider range of investments than a regular IRA — real estate, private equity, precious metals, cryptocurrency, and more. But every investment decision should be made to benefit the IRA itself, never the IRA owner or a disqualified person indirectly. Understanding the disallowed investment rules and the prohibited transaction rules up front is the best way to protect your retirement savings from unexpected taxes and penalties.

Have Questions About What Your Self-Directed IRA Can Invest In?
Our team at My Solo 401k Financial can help you understand the prohibited transaction rules and structure your Self-Directed IRA or Solo 401k the right way.

Next Steps:
Learn More About Self-Directed IRAs | Open a Solo 401k Today

Remember: This information is provided for educational purposes only. Always consult with qualified tax, legal, and investment professionals before making investment decisions with your retirement funds.