For private lenders managing mortgage funds, the Real Estate Investment Trust structure has been one of the most impactful tax planning tools available since the Tax Cuts and Jobs Act of 2017 introduced Section 199A. As the tax landscape continues to evolve heading into the back half of this decade, understanding what REITs actually deliver — and where they fall short — is essential for any fund manager making capital structure decisions today.
At Geraci LLP, we have spent over 15 years advising private lenders on fund formation and tax-efficient structuring. This article breaks down the core REIT qualification requirements, the real tax benefits available to your investors, the limitations fund managers often overlook, and how to think about structural flexibility as the regulatory environment shifts.
What Makes a Mortgage Fund REIT-Eligible
Before examining the tax benefits, it is worth grounding the conversation in the fundamental requirements that a fund must satisfy to maintain REIT status with the IRS.
The Five Core Qualification Requirements
1. Corporate Tax Election A REIT must elect to be treated as a corporation for federal tax purposes. The fund affirmatively notifies the IRS of this election on its tax return. This is not automatic — it requires deliberate action and timing.
2. The 75% Asset Test At least 75% of the REIT’s total assets must consist of qualifying real estate-related assets. Critically, this includes mortgages and mortgage-backed instruments, not just direct property ownership. For a mortgage fund, this qualification is generally straightforward to satisfy.
3. The 90% Distribution Requirement The REIT must distribute at least 90% of its taxable income to investors each year. In practice, most mortgage REITs distribute 100% to avoid having the remaining 10% taxed at the corporate rate. Fund managers considering a REIT election should carefully model their distribution assumptions under various market conditions before committing.
4. The 100-Investor Minimum By January 31st of the year following the REIT’s election year, the fund must have at least 100 investors. Shareholder accommodation services have become the standard solution to meet this threshold without disrupting the existing investor base. These services provide the required shareholder count as a contractual arrangement, layered in without replacing existing limited partners or LLC members.
5. The Closely Held Prohibition No five investors can collectively own 50% or more of the REIT on a fully diluted basis. This rule requires a look-through analysis — the IRS looks through the REIT to its parent entities, and through those entities to their individual members, to determine whether the concentration threshold is breached. There is no accommodation service that solves this problem. Fund managers must genuinely satisfy it through investor diversification, and they have until the final six months of the tax year following the election year to do so.
The Sub-REIT Structure: Why It Has Become Standard Practice
One of the most consequential structural decisions a fund manager can make is whether to convert the fund itself into a REIT or to establish a wholly owned REIT subsidiary beneath the existing fund. At Geraci LLP, the subsidiary REIT — commonly called the Sub-REIT — has become the preferred architecture, and for good reason.
Preserving Exit Flexibility
The most important principle any fund manager should internalize before electing REIT status is this: once you go REIT, you cannot easily reverse it. If the fund entity itself converts to a REIT and circumstances later require unwinding — whether due to a change in tax law, investor composition issues, or compliance failures — the fund has no clean path back. Unwinding requires dissolving the entity and starting fresh.
By contrast, when a fund holds a REIT as a wholly owned subsidiary, that subsidiary can be dissolved and its loans transferred back up to the parent fund if REIT status becomes burdensome or loses its value. The parent fund simply resumes operations as it existed before. This disposability is not a minor convenience — it is meaningful risk management.
Solving the 90% Distribution Problem
The Sub-REIT structure also resolves a practical tension between the 90% distribution requirement and the realities of fund management. The requirement applies at the REIT entity level. When the parent fund is the REIT’s sole investor, the REIT can distribute 100% of its taxable income upward to the parent, satisfying the test, while the parent fund maintains its own distribution model — including profit splits, carried interest arrangements, and reserve-building practices that do not conform to a 90% threshold.
This matters enormously in stressed market conditions. A fund that distributed 95% of income during a bull market may need to hold reserves during a downturn, and the Sub-REIT structure accommodates that without putting the REIT election at risk.
The Tax Benefits: What Your Investors Actually Gain
The Section 199A Deduction: 20% on Qualified REIT Dividends
The provision that drove the REIT trend across the private lending industry is Section 199A of the Internal Revenue Code, enacted as part of the Tax Cuts and Jobs Act of 2017. The deduction allows investors receiving qualified REIT dividends to exclude 20% of those dividends from taxable income — regardless of the investor’s tax bracket.
To understand the practical impact: a taxable investor in the top federal bracket paying approximately 37% on ordinary income would, after the 20% REIT dividend deduction, pay taxes on only 80% of their distribution. The effective rate on that income drops to approximately 29.6%. That is meaningfully closer to long-term capital gains treatment than anything else available to debt fund investors through ordinary structure.
For a fund investor receiving $150,000 in annual distributions, the deduction translates to tax liability calculated on $120,000 rather than $150,000. Across a large investor base, this creates substantial aggregate tax savings.
Industry analysis has generally placed the net tax benefit to investors at approximately 150 basis points of return improvement, though the actual figure depends heavily on the investor’s tax situation and the fund’s leverage and distribution rate.
UBTI Blocking for Tax-Exempt Investors
Unrelated Business Taxable Income is a significant concern for tax-exempt investors — including self-directed IRAs, 401(k) plans, charitable remainder trusts, and certain pension vehicles — when those investors participate in leveraged debt funds. The combination of leverage and debt-related income can generate UBTI liability that is unwelcome or, for some plan structures, outright prohibited.
REITs serve as effective UBTI blockers. The REIT wrapper transforms what would otherwise be UBTI-generating income into qualified REIT dividends, which do not carry UBTI exposure for the investor. For fund managers with a meaningful concentration of tax-exempt investors who also want or need to use leverage, this benefit alone can justify the REIT election even when the Section 199A deduction is irrelevant to most of the investor base.
State Income Tax Withholding Reduction
Mortgage funds that lend across multiple states face a compliance burden: withholding obligations and state income tax filings in each jurisdiction where borrowers are located. The REIT structure consolidates and reduces this burden. Investors receive REIT dividends rather than K-1 income allocated to specific state sources, which significantly reduces the state withholding and filing requirements for both the fund and its investors.
For funds that have expanded into multi-state lending — which describes the majority of active private lenders today — the administrative savings here are real and recurring.
Foreign Investor Withholding Under Tax Treaties
For funds with overseas investors, standard withholding on U.S.-sourced income is 30%. REIT dividends, however, qualify for reduced withholding rates under U.S. tax treaty arrangements with many countries. Depending on the investor’s country of residence, that rate can drop to 15%, 10%, or even 5% in some treaty jurisdictions. The fund must evaluate whether the specific investor’s country has a qualifying treaty and what rate applies, but the savings can be substantial for funds with significant international capital.
Where REITs Do Not Deliver
Understanding the limitations of the REIT structure is as important as understanding its benefits. Not every fund is a good candidate.
IRA-Heavy Funds Without Leverage
If the overwhelming majority of a fund’s investors are in self-directed IRAs or other tax-exempt accounts, and the fund is not leveraged, the REIT structure provides limited value. The Section 199A deduction is irrelevant to non-taxable investors, and without leverage there is no UBTI exposure to block. The compliance costs and structural complexity of maintaining REIT status may outweigh the benefits in this scenario.
That said, if the same fund intends to add leverage in the future, the UBTI analysis changes significantly, and a REIT election may become worthwhile.
Lower-Yield Funds
Funds operating at conservative return profiles — in the 5% to 7% annual return range — may find that the effective tax savings from Section 199A are nominal relative to the administrative overhead of maintaining REIT compliance. The deduction’s value scales with the distribution amount. At lower yields, the absolute dollar benefit per investor may not justify the structural costs.
Investor Note Offerings
The REIT structure is designed for equity investment vehicles — LP or LLC funds that own mortgages as assets. If a fund raises capital by issuing debt instruments (investor notes) to its participants, it is not structured as an equity investment vehicle and is not compatible with a REIT election. Note offerings have their own distinct set of regulatory and tax considerations, but the mortgage REIT framework does not apply to them.
Active Income Considerations
REITs are passive investment vehicles by design, and the tax code reflects that orientation. Selling loans in volume, rather than holding them to maturity, can generate income the IRS characterizes as dealer income — which is disqualifying income for REIT purposes. Similarly, if a fund takes back properties through foreclosure and operates them in a way that generates operating income rather than rental income, that activity may taint the REIT’s income qualification.
The Sub-REIT structure provides a workable solution here: loan sales or REO disposition can be handled at the parent fund level or through a taxable REIT subsidiary, keeping disqualifying income away from the REIT entity itself.
Planning for the Section 199A Sunset
The Section 199A deduction was enacted with a statutory sunset date. Under current law, the 20% deduction expires at the end of 2025 unless Congress acts to extend or make it permanent. The One Big Beautiful Bill Act, signed into law in July 2025, addressed several REIT-related provisions but did not include the proposed increase from 20% to 23% that appeared in earlier drafts. The deduction remains at 20%.
Fund managers should not assume permanence, but they should also recognize that a REIT structure retains meaningful value even if Section 199A were to expire. The UBTI blocking function, state withholding reduction, and foreign investor treaty benefits all exist independently of Section 199A and were built into the REIT framework long before the Tax Cuts and Jobs Act.
A REIT election made with only the 199A deduction in mind is a narrower bet. A REIT election made with full awareness of all the structural benefits is a more durable strategic decision.
Key Takeaways for Private Lenders
- The Sub-REIT subsidiary structure provides disposability and flexibility that a full fund conversion does not. It has become the standard architecture for good reason.
- The Section 199A deduction provides an effective 20% reduction in taxable REIT dividends, delivering meaningful after-tax return improvement for taxable investors in higher brackets.
- UBTI blocking, state withholding reduction, and foreign investor treaty benefits add independent value beyond Section 199A.
- The closely held prohibition and 100-investor minimum require active planning — particularly the closely held test, which has no accommodation workaround.
- Funds with predominantly IRA investors, no leverage, and conservative yields may not benefit enough to justify the structural complexity.
- The Section 199A deduction is set to expire at the end of 2025. The REIT structure retains significant non-Section 199A value regardless of congressional action.
Work With Geraci LLP on Your REIT Strategy
Geraci LLP has been advising private lenders on mortgage fund formation and tax-efficient structuring for over 15 years. Our Corporate and Securities team has formed thousands of mortgage funds and REIT structures across the country, and we understand the specific considerations that apply to private lenders — not just real estate investment broadly.
If you are evaluating a REIT election, considering a Sub-REIT restructuring, or want to understand how current and anticipated tax law changes affect your fund’s returns and investor obligations, we are ready to advise.
Contact Geraci LLP today at (949) 403-3488 or visit us at 90 Discovery, Irvine, CA 92618. Let our team help you build a fund structure that maximizes investor returns and holds up under scrutiny.
