A retirement account does not have to sit in stocks, bonds and mutual funds. Through a self-directed IRA or 401(k), Americans can route that same tax-advantaged money into real estate, private lending, small business stakes, syndications, cryptocurrency and more. For investors who understand those assets better than the stock market, the appeal is the potential for returns that can outperform Wall Street products.
However, the catch is a complex set of IRS rules that most account holders never study, and the amount of money exposed to them grew this year. For 2026, the IRS raised the annual limit to $7,500 for IRAs and $24,500 for 401(k)s, leaving more tax-advantaged capital riding on whether the account is run correctly.
In a recent video, CPA and tax attorney Mark Kohler broke down five of the most common mistakes that can disqualify a self-directed account and erase years of growth in the process.
“I’m talking about a mistake that could disqualify the IRA, create a taxable event, trigger penalties, and turn what you thought was a wealth-building strategy into a very expensive lesson,” Kohler said.
What can disqualify a self-directed IRA
The rules are not unique to traditional IRAs. They govern Roth IRAs, 401(k)s, and even health savings accounts set up for self-direction, Kohler notes. Any one of them can be disqualified by the same missteps.
The first is a timing problem that’s triggered by committing to a deal before the account is ready. An investor can find and negotiate a property, a private loan, or a syndication, but the IRA itself has to be the buyer from the very first document. Signing in your own name first and shifting the money to the IRA afterward is how a clean deal becomes a prohibited one.
“You cannot sign any documents or start closing the deal in any way, shape, or form without allowing your IRA to be the investor,” Kohler said.
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The second mistake is transacting with the wrong person. The restriction is an IRS rule that Kohler explained in simple terms: under the tax code’s prohibited-transaction rules, an IRA can’t buy from or sell to its owner or close family. The point is to block sweetheart deals. A relative might sell to your IRA at a bargain a stranger never would, so every transaction has to be at arm’s length, with an unrelated party.
Kohler adds, “You can’t buy or sell or trade back and forth with your own assets with your IRA. Your IRA is only allowed to buy new investments.”
The penalty for crossing either line is severe. A prohibited transaction can disqualify the entire account, Kohler says, making it immediately taxable and exposing it to penalties, and once it is done it generally cannot be unwound.
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What the rules mean for retirement savers using these accounts
The first two mistakes are about who the account can deal with, while the next three are about ownership, and they kick in once the IRA actually holds an asset. At that point, the line between personal property and retirement property has to stay intact.
The third mistake is using or benefiting from that asset yourself. For example, a self-directed IRA can own a short-term rental, but the owner cannot stay there, even as a paying guest.
“You cannot vacation in your rental property owned by your IRA, even if you pay fair market value rent,” Kohler said. “It’s not allowed.”
The same principle blocks sweat equity. Because contributions are capped each year, Kohler notes unpaid labor is treated as an extra contribution the rules don’t allow.
The fourth mistake is mixing personal and retirement money. Rent and other income have to flow into the IRA, and every expense has to be paid from it, usually through an LLC the account owns. Kohler advises keeping a cash cushion inside the account so it can absorb a surprise repair without the owner reaching for a personal checkbook.
The fifth mistake is assuming that “checkbook control” means no rules. The LLC structure lets the owner serve as manager and move quickly on deals, but it does not suspend any of the earlier restrictions.
“The IRA LLC gives you a steering wheel, but you still have to stay on the road,” Kohler said.
All of these rules are strict, but Kohler argues the payoff can justify them. A rental held inside an IRA can return 20% or more, he says, or roughly three times a typical mutual fund, with the growth shielded from tax along the way. That math is the case for learning the rules rather than avoiding the strategy.
“This isn’t about being scared of self-directing,” Kohler said. “It’s about being prepared.”
Key takeaways on self-directed IRA mistakes
- Set up the account before you commit: A self-directed IRA, not the investor personally, has to be the buyer on every document from the start. Signing a deal in your own name and funding it from the IRA later can create a prohibited transaction.
- Never transact with yourself or close family: The account can only buy and sell at arm’s length. Deals with the owner, a spouse, parents, children, or a company they control are off-limits.
- Don’t personally use or improve the asset: The owner cannot stay in an IRA-owned rental, even at market rent, and cannot do the repairs. Both count as a benefit or contribution the rules don’t permit.
- Keep the money and the structure clean: Income flows into the IRA and expenses are paid from it, usually through an LLC the account owns. That LLC adds speed, but it does not suspend any of the other rules.
- The upside can be worth the rules: Followed correctly, a self-directed IRA can hold real estate, private loans, or crypto and let the gains compound without the yearly tax drag. For Kohler, the rules are the cost of that access, not a reason to avoid it.
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