Yes, you can hold a limited partnership in an IRA, but only through a self-directed IRA with a custodian that accepts alternative assets, and only as a passive limited partner. The IRA becomes the legal investor, every dollar has to move in and out of the account without touching you personally, and a single misstep with the prohibited transaction rules can disqualify the entire account and trigger tax on the full balance. Before you commit capital, you need to understand five things: the structural rules, the disqualified person rules, the tax on business income earned inside the IRA, the annual filing and valuation obligations, and how you will eventually get your money out.
Why a Regular IRA Won’t Work
Conventional IRA custodians at major brokerages limit your holdings to publicly traded stocks, bonds, ETFs, and mutual funds. A private limited partnership interest doesn’t fit that menu. You need a self-directed IRA (SDIRA) held by a custodian that accepts alternative assets.
The custodian’s role here is administrative. They hold the asset in the IRA’s name and process your investment direction. They do not evaluate the partnership, vet the sponsor, or confirm that the deal complies with the tax code. The due diligence, and the compliance risk, falls entirely on you.
Both traditional and Roth SDIRAs can hold LP interests. A traditional SDIRA defers tax until distribution; a Roth SDIRA offers tax-free qualified distributions. One surprise catches Roth investors off guard: if the partnership generates unrelated business taxable income, both types of IRA owe the tax. The Roth’s usual shield doesn’t apply.
For 2026, annual IRA contributions are capped at $7,500, or $8,600 if you’re 50 or older.1Internal Revenue Service. Retirement Topics – IRA Contribution Limits Most partnership minimums are far larger, so funding an SDIRA for this purpose usually means rolling over from a 401(k) or another IRA rather than making a fresh contribution.
How the Investment Must Be Structured
The partnership interest must be titled to the IRA, in a format like “ABC Custodian FBO [Your Name] IRA.” If it’s titled to you personally, the IRS treats it as a distribution from the account and taxes you on it immediately. This is not a paperwork issue you can fix later.
The IRA must hold a limited partner interest only. The limited partner role is passive by design: you contribute capital, receive distributions, and share in profits and losses, but you don’t manage the business. If your IRA took on a general partner role, it would be operating an active business, which sharply raises the risk of both prohibited transactions and unrelated business taxable income.2Office of the Law Revision Counsel. 26 USC 408 – Individual Retirement Accounts
The partnership also has to be a genuine investment, not a workaround for personal benefit. An IRA cannot invest in a limited partnership whose assets you use personally, such as a vacation property, a vehicle, or artwork displayed in your home.3eCFR. 26 CFR 1.408-2 – Individual Retirement Accounts You personally cannot manage the partnership, provide services to it, or receive any compensation from it. Even if your IRA supplied all the capital, you cannot manage the properties, keep the books, or collect a fee. Keeping a bright line between you and the partnership’s operations is the most important ongoing compliance rule.
Prohibited Transactions and Disqualified Persons
The fastest way to destroy an SDIRA holding an LP interest is to trigger a prohibited transaction under IRC Section 4975. The consequence is not proportional to the offense. One prohibited transaction, however small, causes the entire IRA to lose its tax-exempt status as of the first day of that tax year. The IRS then treats the full fair market value of every asset in the account as a taxable distribution to you.2Office of the Law Revision Counsel. 26 USC 408 – Individual Retirement Accounts If you’re under 59½, add a 10% early withdrawal penalty on top of the income tax.
A prohibited transaction is any direct or indirect dealing between the IRA and a “disqualified person.” The definition is broader than most investors expect. It covers:
- You, as the IRA owner and fiduciary of the account
- Your spouse
- Your ancestors, including parents and grandparents
- Your lineal descendants, including children, grandchildren, and their spouses
- Anyone providing services to the IRA, such as advisors and custodians
- Any entity in which you or the family members above own 50% or more
A limited partnership managed by your adult child is a disqualified person relative to your IRA. So is a company you own 60% of. The rule is absolute: even if the transaction is at fair market value and benefits the IRA, it is still prohibited when a disqualified person sits on the other side.4Office of the Law Revision Counsel. 26 USC 4975 – Tax on Prohibited Transactions
With LP investments, the violations that come up most often are the partnership buying property from you or selling to you, you or a family member providing paid services to the partnership, and personal use of partnership assets. If the partnership owns apartments, your child cannot live in one even at market rent. If it owns a car wash, you cannot get free washes. The IRS does not weigh intent or fairness; if the transaction happened between the IRA and a disqualified person, the IRA is disqualified.5Internal Revenue Service. Retirement Topics – Prohibited Transactions
The Tax on Business Income Inside the IRA
An IRA is tax-exempt, but that exemption covers passive investment income: interest, dividends, most rental income, and capital gains from securities. When an IRA earns income from an active business, that income becomes unrelated business taxable income (UBTI) and is taxed inside the account.2Office of the Law Revision Counsel. 26 USC 408 – Individual Retirement Accounts
Limited partnerships frequently generate UBTI. If the partnership develops and flips properties, operates a restaurant, runs a service business, or does anything the IRS considers an active trade or business, the income that flows through to your IRA on the Schedule K-1 is UBTI. The tax on that income, called the unrelated business income tax (UBIT), is paid by the IRA itself, reducing your retirement balance.
UBIT uses trust tax rates, which are compressed. For 2026, the top 37% rate hits at just $16,000 of taxable income. An individual, by comparison, doesn’t reach that bracket until well over $600,000. Even modest UBTI can produce a meaningful tax bill. A partnership that looks attractive on paper may be significantly less so once you model the expected UBTI at trust rates. The IRA does receive a $1,000 specific deduction against UBTI, which reduces the taxable amount at the margin.6Office of the Law Revision Counsel. 26 USC 512 – Unrelated Business Taxable Income
Debt-Financed Income
A second source of UBTI catches investors who assume their partnership generates only passive rental income. When a partnership borrows money to buy or improve property, the portion of income attributable to that debt is unrelated debt-financed income (UDFI), and it’s taxable inside the IRA regardless of whether the underlying activity is passive.7Office of the Law Revision Counsel. 26 USC 514 – Unrelated Debt-Financed Income
The calculation is proportional. A partnership that buys a $1 million property with $600,000 borrowed has 60% of that property’s net income treated as UDFI, taxable to the IRA. The ratio is recalculated annually based on average debt balance relative to the property’s adjusted basis. Real estate partnerships commonly use leverage, so UDFI is the most frequent source of UBTI in SDIRA-held LP interests. Ask the sponsor about the leverage plan before you invest.
Roth IRAs Are Not Exempt
A common misconception is that Roth IRAs escape UBIT because Roth distributions are tax-free. They don’t. IRC Section 408(e)(1) subjects all IRAs to the tax on unrelated business income under Section 511, and that includes Roth accounts. A leveraged real estate partnership held in a Roth SDIRA pays UBIT on the UDFI portion at trust rates just as a traditional SDIRA would.
Annual Filings: K-1 and Form 990-T
The partnership issues a Schedule K-1 to your custodian each year, reporting the IRA’s share of income, losses, deductions, and credits. UBTI appears under Box 20, Code V.8Internal Revenue Service. Partners Instructions for Schedule K-1 Form 1065 (2025) – Section Box 20 Other Information
If gross UBTI from all sources reaches $1,000 or more during the year, the custodian must file IRS Form 990-T on behalf of the IRA. The filing deadline is April 15 following the close of the tax year.9Internal Revenue Service. Instructions for Form 990-T (2025) – Section When To File The UBIT is paid directly from the IRA’s cash balance, not from your personal funds, which is one reason the account has to keep cash on hand.
Your job in this process is making sure the partnership knows your IRA is the investor and that the K-1 goes to the correct custodian address. Late K-1s are chronic in private partnerships, and if the custodian doesn’t receive one in time, it may miss the 990-T deadline. Penalties and interest are charged to the IRA. Custodians also charge a separate fee for 990-T preparation, often several hundred dollars, paid from the account.
Funding the Investment and Capital Calls
When you invest, you submit an investment direction form to the custodian along with the offering documents and subscription agreement. The custodian wires capital directly from the SDIRA to the partnership. You cannot handle the funds at any point. Writing a personal check to the partnership with the plan to reimburse the IRA later creates a prohibited transaction.
Many LPs require capital calls after the initial commitment. Every call has to be funded from within the SDIRA. If the account is short on cash, you cannot cover the shortfall from personal funds, because that would be a direct transaction between you and the IRA’s investment.5Internal Revenue Service. Retirement Topics – Prohibited Transactions You would need to either contribute (within annual limits) or roll over funds first, then direct the custodian to send the capital.
Because capital calls often carry short deadlines, keeping a cash buffer inside the SDIRA, generally 5% to 10% of the total portfolio value, is a practical safeguard. Failing to meet a call can trigger penalties under the partnership agreement, including dilution of your interest or forfeiture of prior contributions.
Annual Valuation Reporting
An LP interest has no daily market price. Your custodian is required to report fair market value annually on IRS Form 5498, and partnership interests are flagged as hard-to-value assets.10Internal Revenue Service. Form 5498 – Asset Information Reporting Codes and Common Errors The custodian isn’t going to appraise the asset. They need a defensible number from you.
Most investors rely on the partnership’s annual financial statements or the capital account balance on the K-1. For more complex holdings, particularly real estate partnerships with appreciated property, an independent third-party appraisal strengthens your position if the IRS questions the value. Understating value reduces your reported IRA balance and affects required minimum distributions later; overstating it creates problems when you eventually distribute or sell.
Required Minimum Distributions with an Illiquid Holding
Once you reach the age when RMDs begin, an illiquid LP interest inside your IRA creates a real logistical problem. RMDs are calculated on total IRA fair market value, including the partnership interest. The IRS doesn’t care whether the asset is easy to liquidate.
If the SDIRA holds enough cash or liquid assets alongside the partnership interest, take the RMD from the liquid portion. Keeping at least one year’s RMD in cash is a useful rule as you approach that age.
If the account is mostly or entirely the LP interest, options narrow. One is an in-kind distribution, moving a portion of the partnership interest out of the IRA into a taxable account. That distribution satisfies the RMD based on fair market value at the time of transfer, and the custodian reports it on Form 1099-R. You’ll need a professional appraisal to support the value, and the distributed amount is taxed at ordinary rates. Ideally you’d pay that tax from non-IRA funds.
In-kind distributions raise their own complications. The partnership agreement may restrict transfers, and the general partner typically has the right to approve or deny any transfer of ownership. Before investing IRA funds, read the partnership agreement for transfer restrictions. If fractional transfers aren’t permitted, you could find yourself unable to satisfy RMDs without selling the entire position.
Exiting the Investment
Limited partnership interests are illiquid. There is no public exchange, and if you need out before the partnership winds down, your options are limited.
A secondary market for private fund interests exists, but transactions are slower and more complex than selling public securities. A secondary sale usually means finding a buyer willing to purchase your stake at a discount to the most recent net asset value. The general partner almost always has approval rights over any transfer, and many partnership agreements include a right of first refusal for existing partners or the GP. A straightforward sale can close in a few weeks; more complex ones take months.
Two constraints come with selling from an SDIRA. The proceeds have to flow back into the IRA, so the buyer pays the custodian, not you. And the buyer cannot be a disqualified person. Selling to your spouse, your child, or a company you control is a prohibited transaction that would disqualify the entire account.4Office of the Law Revision Counsel. 26 USC 4975 – Tax on Prohibited Transactions
The Costs That Cut Your Return
Holding an LP interest in an SDIRA generates layers of fees that don’t exist in a conventional IRA. Annual custodial fees for alternative assets typically run $300 to over $1,000, depending on the custodian and the complexity of the holding. Form 990-T preparation, when required, adds several hundred dollars. Both come out of the IRA’s cash balance.
The partnership charges its own management fees and carried interest, which reduce distributions to your IRA. And if the partnership generates UBTI, the tax paid from the account further reduces the principal that would otherwise compound. Stack all of these against the projected return before you commit. A partnership advertising a 12% gross return can net meaningfully less inside an SDIRA once custodial fees, UBIT at trust rates, and management fees are deducted.