Self-directed IRA

Most people think an IRA can only hold stocks and funds. It can hold far more, including real estate, if you use a self-directed IRA. A self-directed IRA, an SDIRA, is a retirement account with a custodian that permits alternative assets, so your IRA itself can buy a rental property, collect the rent tax-deferred (or tax-free in a Roth), and grow inside the retirement wrapper. The appeal is obvious. The traps are less obvious, and two of them are serious enough that real estate investors need to understand them before funding one.

How it works, and the money rule

In an SDIRA, the IRA owns the property, not you. The rent flows back into the IRA, the expenses are paid from the IRA, and the growth compounds inside the account’s tax shelter. In a traditional SDIRA that is tax-deferred; in a Roth SDIRA the eventual gains can be tax-free.

The iron rule is that the IRA’s money and your money never mix. The IRA buys the property with IRA funds, all income must return to the IRA, and all expenses must be paid by the IRA. You cannot pay a repair bill out of your own pocket, and you cannot pocket the rent. The account is a separate financial universe, and the entire tax benefit depends on keeping it walled off from your personal finances.

In a self-directed IRA the account owns the property and all income and expenses flow through the IRA, never your personal funds, which is what preserves the tax shelter.

The UDFI trap: leverage triggers a tax inside your IRA

Here is the first trap, and it blindsides real estate investors because it defeats the usual logic that leverage is good. If your SDIRA borrows to buy property, using a mortgage, the portion of the income and gain attributable to the borrowed money is unrelated debt-financed income, UDFI, and it is subject to unrelated business income tax, UBIT, even inside your tax-sheltered IRA.

The mechanics: buy a property half with IRA cash and half with a loan, and roughly half the net profit is debt-financed and taxable to the IRA. And it is taxed at trust tax rates, which are brutally compressed, hitting the top 37% bracket at only about $14,450 of income in 2026. So a leveraged rental in an SDIRA can generate a real tax bill inside an account you thought was tax-sheltered. There is also a hard requirement that the loan be non-recourse, because you cannot personally guarantee your IRA’s debt without triggering the prohibited-transaction rules below. This UDFI problem is the single biggest reason a leveraged real estate investor often prefers a solo 401(k), which is exempt from it.

If your self-directed IRA uses a mortgage, the debt-financed share of the income is taxable inside the IRA at compressed trust rates, so leverage quietly creates tax in a supposedly tax-sheltered account.

The prohibited-transaction landmine

The second trap is more dangerous because it can destroy the entire account, not just tax part of it. The IRA cannot transact with you or other “disqualified persons,” which includes you, your spouse, your ascendants and descendants, and entities you control. This is the prohibited transactions rule, and in an SDIRA it has sharp edges.

You cannot live in or vacation in the IRA’s property, even for a night. You cannot do repairs on it yourself (that is contributing sweat equity, a prohibited transaction). You cannot rent it to your kids or your parents. You cannot buy a property the IRA already owns, or sell your own property to the IRA. Cross the line, and the consequences are severe: the IRS can treat the entire IRA as distributed as of the first day of the year the violation occurred, triggering income tax on the whole account plus penalties. One misstep can vaporize a retirement account. This is why SDIRA real estate is genuinely hands-off investing, run through the custodian, at arm’s length from your personal life.

A prohibited transaction, using the property yourself, doing your own repairs, or dealing with family, can cause the IRS to treat the whole IRA as distributed, taxing the entire account.

The bottom line

• A self-directed IRA can own real estate directly, with rent and growth sheltered inside the account.
• The IRA’s money and your money must never mix; all income and expenses run through the IRA.
• Leverage triggers UDFI, taxing the debt-financed share of income inside the IRA at trust rates.
• Any loan must be non-recourse, since you cannot personally guarantee your IRA’s debt.
• A prohibited transaction with you or family can cause the entire account to be treated as distributed.

For the leveraged-real-estate alternative that avoids UDFI, read solo 401(k). For the rule that can destroy the account, see prohibited transactions. For the full picture, start at the advanced real estate tax strategies hub.

Last verified August 2026.