Self-Directed IRA and Solo 401(k): How to Invest in a Private Fund With Tax-Advantaged Capital | The AAA Storage Podcast #46

Paul Bennett
Paul Bennett
September 28, 2026
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If you’ve moved your IRA or opened a solo 401(k) to invest in private real estate, there’s a tax wrinkle worth understanding before your fund’s first sale. On our latest episode, we walk through the mechanics of how these accounts actually work and where the tax exposure comes from.

The Trade-Off Nobody Explains Upfront

A self-directed IRA and a solo 401(k) both open the door to investments a traditional IRA can’t touch — private equity, real estate, and other alternative assets. But the moment leverage enters the picture, so does Unrelated Business Income Tax, or UBIT. It doesn’t take much: about $15,000 of unrelated business income inside a self-directed IRA can land you in a 37% tax bracket, because it’s taxed on the compressed trust schedule rather than your personal one. We run our developments at roughly 65% loan-to-cost, which is an aggressive level of leverage, so this is a real consideration for our investors, not a hypothetical one.

The Fix Almost Nobody Uses

Here’s the part that changes the calculation. A solo 401(k) is a different legal structure than an IRA, and it simply isn’t subject to UBIT. Qualifying for one doesn’t require giving up your day job — a side gig, consulting income, board fees, even driving for a rideshare service can count, as long as you have no employees besides a spouse. Once you qualify, you can roll every other retirement account you own, including a self-directed IRA already holding six or seven figures, into the solo 401(k) and invest in leveraged assets going forward without that tax exposure. You only need to be qualified at the moment you open the account, not on an ongoing basis, which is why it can be worth opening one now, even with a small initial deposit, just to preserve the option.

Is This Strategy Right for You?

• It matters at any stage: a younger investor targeting long-term appreciation benefits, and so does an older investor drawing income, since UBIT applies to both.

• You only need to be qualified for a solo 401(k) at the moment you open it — not on an ongoing basis.

• It’s worth opening one now, even with a small initial deposit, to preserve the option for later.

• Every self-directed IRA custodian handles paperwork differently, so a direct line between your custodian and our team makes the process faster.

[This is a conversation for your tax advisor, not a substitute for one.]

We go deeper on the mechanics in the full breakdown on our blog: How a Solo 401(k) Changes the Math on Leveraged Real Estate

Ready to talk about your investment strategy? Reach out at https://www.aaastorageinvestments.com/contact

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Paul Bennett
Paul Bennett
Managing Director

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