You can’t deposit cash-out refinance proceeds into a self-directed IRA, and loaning that money to your SDIRA disqualifies the whole account under IRC §4975(c)(1)(B). One structure works: use the refi cash personally while the SDIRA takes its own non-recourse loan. But even that path exposes the IRA to unrelated debt-financed income (UDFI), taxed at trust rates that hit 37% around $15,650 of taxable income in 2026.
What Homeowners Are Actually Trying to Do
The pitch usually arrives through a real-estate podcast or an SDIRA custodian’s webinar – the kind you half-listen to during a commute, then rewind because a number caught your ear. Three distinct plans get bundled under one label, and readers routinely conflate them.
Plan one: contribute the refi cash to the IRA. Plan two: loan or gift it to the IRA so the IRA can close on a property. Plan three: keep the cash on the personal side while the IRA takes its own non-recourse mortgage. Only plan three is legal, and even it carries a tax cost the promoters somehow never mention.
Why You Can’t Contribute Refi Cash to an IRA
Cash-out proceeds are debt, not income. Nothing hits a 1099, nothing lands on your AGI, and IRC §219 requires “compensation” (earned income from wages or self-employment) as the basis for any IRA contribution. So refi cash fails at step one.
The 2026 IRA contribution ceiling is $7,500, rising to $8,600 at age 50 with the $1,100 catch-up. SECURE 2.0 adds a super-catch-up of $11,250 total for ages 60 through 63. A homeowner pulling $200,000 out of equity has no route to move that into an IRA even if the earned-income test were satisfied. And any excess triggers a 6% annual excise tax under §4973 until it’s corrected. Worth knowing: reputable custodians reject the deposit at intake, usually before it clears.
Why Loaning the Cash to Your SDIRA Is a Prohibited Transaction
IRC §4975(c)(1)(B) prohibits any direct or indirect extension of credit between an IRA and a disqualified person. The interest rate doesn’t matter. Neither does the maturity. A zero-percent, unsecured personal loan from you to your own SDIRA (to close on a property, say) is a per se violation. So does the narrow operating-expense carve-out help? No. It exists so an account owner can front a $75 wire fee without blowing up the plan, not to fund a five- or six-figure real estate acquisition.
And here’s the piece most homeowners miss: the personal-guarantee trap catches more people than the outright loan. In Peek v. Commissioner, 140 T.C. 216 (2013), the Tax Court held that personally guaranteeing a loan made to an IRA-owned entity was itself an extension of credit under §4975, and the taxpayers’ IRAs lost qualified status. A bank asking you to sign as guarantor on the SDIRA’s mortgage is the same trap in a different suit.
Who Counts as a “Disqualified Person” Under §4975(e)(2)
The disqualified-persons list is wider than most readers assume. It covers the IRA owner, spouse, ancestors, lineal descendants, and the spouses of those descendants. Beyond that, it also reaches any entity the owner or that family group owns or controls at 50% or more, plus the plan’s fiduciaries and service providers.
Siblings, though, aren’t on the lineal list. Neither are cousins. That gap creates real planning options and equally real confusion. Your child’s spouse is in. Your own sister is out. And a business partner holding 50% or more of a joint entity is in for that entity’s dealings with the IRA.
The One Compliant Structure: Strict Silos
The structure that survives §4975 scrutiny keeps the two sides completely separate. On the personal side, you take a cash-out refinance for personal purposes and use the proceeds outside the IRA. Over on the retirement side, the SDIRA obtains its own non-recourse loan, holds title (often through an IRA-owned LLC), pays every expense from IRA funds, and takes every dollar of rent straight into the IRA.
Non-recourse means the lender’s only remedy on default is the property itself. You can’t sign as guarantor or pledge personal assets to lift the LTV. Specialty non-recourse lenders serving the SDIRA market typically require 30% to 50% down on residential rentals, with more for land or commercial deals. Confirm current terms with active lenders before you model the deal.
Here’s what you can’t do. You can’t occupy the property. You can’t let a disqualified relative rent it. You can’t manage it in a way that benefits you personally, and you can’t swing a hammer on it either – sweat equity from a disqualified person is a §4975(c)(1)(C) furnishing of services. Ellis v. Commissioner (T.C. Memo 2013-245) and McNulty v. Commissioner (157 T.C. No. 10, 2021) both show how aggressively the IRS reads owner involvement in “checkbook” IRA-owned LLCs.
This section describes the structure. It isn’t a how-to. Before executing anything, engage a CPA and an ERISA-experienced attorney.
The Tax Hit Promoters Skip: UBIT and UDFI
When an IRA acquires property with debt, the debt-financed share of net income becomes unrelated debt-financed income (UDFI) under IRC §514. That income gets hit with unrelated business income tax (UBIT) inside the IRA at trust rates. In 2026, trust rates reach the top 37% bracket at roughly $15,650 of taxable income – and there’s no married-filing-jointly runway to soften the curve.
Illustrative example only, not tax advice: an SDIRA buys a $300,000 rental with a 50% LTV non-recourse loan. Net rental income after operating expenses and depreciation runs $18,000 in year one. Because 50% of the acquisition is debt-financed, roughly $9,000 is UDFI. After the $1,000 §512(b)(12) specific deduction and the trust brackets, the IRA owes federal UBIT and files Form 990-T. Capital gains at sale take the same debt-financed haircut. So the account doesn’t compound tax-deferred the way a stock holding does.
Solo 401(k): Often the Better Vehicle for Debt-Financed Real Estate
IRC §514(c)(9) exempts qualified plans, including solo 401(k)s, from UDFI on debt-financed real estate that meets a set of structural conditions. That same $300,000 rental, held inside a solo 401(k), generates no UBIT on the debt-financed share. Real-estate-focused retirement investors with self-employment income routinely pick the solo 401(k) for exactly that reason.
Eligibility is the gate, though. A solo 401(k) requires self-employment income and no non-spouse employees. A W-2 employee with no side income can’t open one. But when self-employment income is present and the plan can be set up cleanly, the §514(c)(9) exemption is often the single largest factor tilting the decision – it’s the kind of thing that quietly changes the math on the whole strategy.
What Happens If You Get It Wrong
A prohibited transaction under §4975 causes the IRA to be deemed distributed on January 1 of the violation year, under IRC §408(e)(2). The full account balance becomes ordinary income that year. And if the account holder is under 59½, the 10% early-withdrawal penalty applies to the entire balance.
One transaction empties the account.
The excise taxes stack on top. §4975(a) imposes a 15% tax on the “amount involved” each year the violation continues, escalating under §4975(b) to 100% if it isn’t corrected. Peek, Ellis, and McNulty are the cases most often cited when the IRS moves against SDIRA structures. Each shows the same pattern: what looked like a paperwork technicality cost the account.
Who This Structure Makes Sense For, and Who It Doesn’t
The signals worth exploring are pretty specific: you’ve got significant IRA balances you want to diversify into real estate, along with self-employment income that could support a solo 401(k) instead, and enough outside cash flow to keep the SDIRA fully funded for repairs, vacancies, and taxes without needing a personal contribution to plug a gap.
The signals it’s the wrong tool are just as clear. Maybe you need to touch the property personally. Maybe you want depreciation to shelter your W-2 income (an IRA can’t pass losses through to you). Or maybe the deal only pencils if you personally guarantee the mortgage. Any one of those is enough to walk away.
Alternatives Worth Considering Before You Refinance
Buying the rental directly with cash-out proceeds keeps §4975 out of the picture entirely. Appreciation and cash flow get taxed in your personal name each year, but depreciation offsets flow through. A HELOC on the personal side gives you flexibility if the SDIRA’s non-recourse closing timeline slips, since you’re drawing only what you need. And holding the investment property in an LLC outside any retirement account sidesteps both §4975 and UDFI while keeping liability separation. Each carries trade-offs worth modeling before you commit to the refinance.
When to Involve a CPA, an ERISA Attorney, and a Non-Recourse Lender
Any real move here needs three specialists before execution: a CPA fluent in Form 990-T and UDFI mechanics, an ERISA-experienced attorney who can vet the disqualified-persons scope and the LLC operating agreement, and a non-recourse lender who quotes real 2026 terms. Custodian marketing isn’t a substitute for any of the three.
Frequently Asked Questions
Can I use a cash-out refinance to fund my self-directed IRA? No. Refi proceeds aren’t earned income under §219 and can’t be contributed.
Is loaning money to my SDIRA a prohibited transaction? Yes, under §4975(c)(1)(B), regardless of interest rate or terms.
Can I personally guarantee a loan to my SDIRA? No. Peek v. Commissioner held that a guarantee is itself an extension of credit and disqualifies the IRA.
What is a disqualified person under IRC §4975? The IRA owner, spouse, ancestors, lineal descendants, and their spouses, plus any entity that group owns or controls at 50% or more.
What happens if the IRS finds a prohibited transaction? The whole IRA is deemed distributed on January 1 of the violation year under §408(e)(2), taxed as ordinary income, plus a 10% penalty if the owner is under 59½, and then §4975(a) and (b) excise taxes on top of that.
What is UDFI, and does it apply to my SDIRA rental property? Unrelated debt-financed income under §514. The debt-financed share of net rental income and gain gets taxed inside the IRA at trust rates.
Is a solo 401(k) better than an SDIRA for buying real estate with a loan? Often yes, because §514(c)(9) exempts qualified plans from UDFI on real estate debt. Eligibility requires self-employment income.
How much can I contribute to an IRA in 2026? $7,500 under age 50, $8,600 at 50 or older, and $11,250 for ages 60 to 63 under the SECURE 2.0 super-catch-up.
Requirements vary by custodian, lender, and state. Confirm current thresholds and structure with a CPA and an ERISA-experienced attorney before you execute any refinance or SDIRA transaction.
