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Private Credit Blockers: Legitimate Structure or Substance-Free Tax Avoidance?

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🏢 Client 2026-03-28 02:16
We're looking at committing $50 million to a private credit fund that will be doing some origination work and taking participation interests in loans. The fund manager is telling us we need a blocker structure because of UBTI concerns — apparently the fund will generate business income, not just passive investment income, and as a university endowment we can't have that hitting our 990-T. Their proposed structure is that we invest through a wholly-owned offshore corporation, probably a Cayman entity, which would be the actual LP in the fund. The blocker pays corporate tax on its share of fund income, then dividends the after-tax proceeds up to us tax-free. We'd be looking at a 21% corporate tax hit on the income before we see it, versus zero if we could invest directly — so on a 12% gross return from the fund, we're really netting maybe 9.5% after the blocker tax. That's a meaningful haircut. My question is simple: do we actually need this blocker, or is the fund manager being overly cautious? What exactly makes this fund's income "business income" instead of investment income, and is there any way to structure around it without the blocker? I need to understand if that 2.5 point drag is truly unavoidable or if we have options here.
⚡ Junior Advisor 2026-03-28 02:16
I think the fund manager is right to flag this, and you're probably stuck with the blocker unless we can get comfortable that the fund's activities stay on the investment side of the line. The core issue is whether the fund is engaged in a trade or business under Section 513. If it is, then your share of that income is unrelated business taxable income under Section 512(a)(1), and as a 501(c)(3) organization, you'd be filing a 990-T and paying tax at trust rates — which could actually be worse than the 21% corporate rate depending on the income level. The problem here is loan origination. Treasury Regulation 1.513-1(d)(4)(ii) makes clear that regularly originating loans — as opposed to just purchasing and holding them — can constitute a trade or business, especially when there's underwriting, due diligence, and ongoing servicing involved. If this fund is actively originating credit and not just buying seasoned loans in the secondary market, you've got a real UBTI problem. The participation interests complicate it further — if the fund is taking an active role in syndicating or structuring those participations, that smells like business activity, not passive investment. Now, there's an argument that if the fund is just making loans and holding them to maturity, that might still be investment activity under the Supreme Court's old Whipple v. Commissioner framework — the question is whether the fund is holding itself out as being in the lending business versus just deploying capital. But if they're calling themselves a "private credit fund" that does "origination work," they're probably over the line. The Revenue Ruling 78-51 analysis would likely classify this as UBTI. The blocker does solve it — Section 512(b)(1) excludes dividends from UBTI, so once the Cayman corp pays the dividend up to you, it's clean income. Is there any detail in the PPM about exactly how much of the fund's activity is origination versus secondary purchases? That distinction might give us a path forward.
🛡️ Senior Advisor 2026-03-28 02:16
I agree the blocker is solving a real problem here, but I think we need to slow down on the assumption that origination automatically equals trade or business. That's the fund manager's reflex answer, and it's the safe answer, but it may not be the only answer. The question isn't just whether the fund originates loans — it's how much origination, how systematic, and whether the endowment itself is the one doing it or just passively receiving allocations from a fund that does it. Here's where I push back on my colleague: Reg. 1.513-1(d)(4)(ii) talks about "regularly" carrying on lending activities, but you're an LP in a fund. You're not originating anything. The fund manager is originating. The question is whether the GP's activities get attributed to you for UBTI purposes, and that's a facts-and-circumstances analysis. If this is a standard private fund where the GP makes all investment decisions and you have no control or participation in loan underwriting, you've got a reasonable argument that you're just a passive investor receiving investment income under Section 512(b)(1)'s exclusion for interest, dividends, and gains from property. The blocker costs you 250 basis points a year — that's $1.25 million annually on your $50 million commitment. I want to be damn sure that cost is necessary before we lock it in. The second issue is the participation interests. If the fund is buying participations in loans that were originated by someone else — say, a bank or another lender — and the fund is just taking a passive economic interest without servicing obligations, that looks a lot more like purchasing securities than running a lending business. But if the fund is structuring participations, syndicating deals, and taking on servicing or workout responsibilities, then yes, you're in trade-or-business territory and the blocker makes sense. We need to see the PPM and understand exactly what the fund's role is in these participation arrangements. Is the fund acting like a lender or like an investor buying loan exposure? What does the PPM actually say about the fund's origination activities and the participations — is there language about sourcing, underwriting, servicing, or is it more about deploying capital into pre-existing credit opportunities?
🏢 Client 2026-03-28 02:17
Look, I hear you that there's potentially an argument here, but I need to understand the practical risk we'd be taking if we go without the blocker. You're saying maybe we can treat this as passive investment income if the GP is doing all the work and we're just receiving allocations — that sounds great in theory, but what happens when the IRS examines our 990-T and decides we got it wrong? What's the realistic audit risk here, and what would the damage look like? Because here's my concern: if we skip the blocker to save 250 basis points and the IRS later says "no, that was UBTI all along," we're not just paying the tax we tried to avoid — we're paying it with penalties and interest, potentially going back three years or more. That could easily wipe out the savings and then some. So before I tell the fund manager we're investing direct, I need to know: are we talking about a defensible position that might get challenged but would likely hold up, or are we talking about an aggressive read of the law that only works if we never get audited? And what documentation would we need to support a no-blocker position? Would we need a tax opinion from fund counsel? Something in the LPA that explicitly limits our involvement in origination decisions? I'm willing to take some risk to save $1.25 million a year, but I need to see the actual risk-return calculus here with real numbers on audit probability and downside exposure.
⚡ Junior Advisor 2026-03-28 02:17
The audit risk question is exactly the right one to ask, and I have to be honest with you — this is a position where the probability of challenge is meaningful and the documentation requirements to defend it are significant. If you invest directly and take the position that this is passive investment income excluded under Section 512(b), you're going to need more than just a handshake and good intentions. You'd want a tax opinion from reputable fund counsel explicitly opining that the LP's allocations constitute excluded investment income, not UBTI. That opinion would need to analyze the specific origination activities, conclude that they don't rise to the level of a trade or business attributable to the LPs, and address the participation interests. Without that opinion, you're essentially self-assessing a technical position on your 990-T that could easily draw scrutiny. Here's my concern with the audit exposure: university endowments are not low-profile taxpayers. Your 990 is public, and if the IRS sees a large endowment with significant alternative investment activity reporting zero UBTI from a credit fund, that's a red flag. The examination rate for large 501(c)(3) organizations has been increasing, especially around UBTI issues, because Treasury knows this is an area where aggressive positions proliferate. If you get examined and the agent concludes this should have been UBTI, you're looking at the tax due plus a 20% accuracy-related penalty under Section 6662(a) if the underpayment exceeds the threshold, plus interest compounding from the original due date of each return. On a $6 million annual income allocation — 12% of $50 million — that's potentially $1.5 million in tax per year at the top trust rate, plus 20% of that as a penalty, plus three or four years of compounded interest. You could be looking at a $7-8 million hit on a three-year lookback. Now, where I differ a bit from my colleague is this: even if you had an opinion and strong documentation, I think the underlying facts here are hard to defend. The fund manager is calling this origination work, which suggests they're holding themselves out as lenders, not just passive investors buying loan assets. That's the Whipple test — are you in the business of lending or just making investments? If the PPM describes active origination, underwriting, and credit analysis as core fund activities, an opinion letter isn't going to change the facts. The blocker might be expensive, but it's certain. The direct investment saves you money unless you're wrong, and if you're wrong, the downside is substantially larger than the upside you're chasing. Have you asked the fund manager whether other university endowments or tax-exempts in the fund are using blockers, or is everyone going direct and taking the position that this is investment income?
🛡️ Senior Advisor 2026-03-28 02:17
I'm going to disagree with my colleague on the audit risk calculus here, and I want to be very clear about where I think he's overstating the danger. Yes, this is a technical position that requires careful documentation. But the idea that the IRS is going to automatically hit you with a 20% accuracy-related penalty on a position supported by a well-reasoned tax opinion from competent fund counsel is not how the penalty rules actually work. Section 6662(d)(2)(B) provides an exception to the accuracy-related penalty if you have substantial authority for the position or adequate disclosure plus a reasonable basis. A tax opinion analyzing the specific facts and concluding this is excluded investment income gives you substantial authority. The penalty risk he's describing assumes you're taking a frivolous position with no support — that's not what we're talking about here. Second, let's be realistic about what the IRS actually examines. Yes, large endowments file public 990s, but the IRS doesn't have unlimited resources to audit every university that reports alternative investments. They're looking for patterns of abuse — situations where tax-exempts are clearly operating businesses and reporting zero UBTI, or where there's obvious economic substance problems. A private credit fund investment with a supportable legal position that you're a passive LP is not the same as running an unrelated business directly. The question isn't whether you might get examined — the question is whether your position would survive examination, and that depends entirely on the actual facts of what the fund does and what your role is. Here's the framework I'd use: if the PPM shows that LPs have no involvement in origination decisions, no approval rights over individual loans, and the GP is making all investment decisions in its sole discretion, then you have a genuine argument that the GP's activities are not attributed to you for UBTI purposes. Courts have recognized that limited partners receiving passive allocations from a partnership can be treated differently than general partners actively involved in business operations. It's not a slam dunk, but it's also not a prayer. The blocker costs you $1.25 million per year with certainty. The risk of going direct is that you might owe tax plus interest if challenged, but the probability-weighted cost of that outcome might actually be lower than the guaranteed cost of the blocker — especially if you have a strong opinion and the facts support passive treatment. What I need to know is this: does the LPA give you any approval rights, consultation rights, or involvement in credit decisions, or are you purely a passive capital provider? And has the fund manager actually provided analysis on this, or are they just defaulting to blockers because that's easier for them?
⚡ Junior Advisor 2026-03-28 02:18
I have to push back hard on the penalty analysis you just gave, because I think you're misreading how Section 6662 applies to reporting positions on unrelated business income. Substantial authority is a high bar — it's not just "we got a tax opinion from someone respectable." Treas. Reg. 1.6662-4(d)(3)(iii) defines substantial authority as something less than more-likely-than-not but substantially higher than reasonable basis. You need weight of authority supporting your position, and when we're talking about whether loan origination activities constitute a trade or business, the weight of authority runs the other way. Rev. Rul. 78-51 is directly on point for lending activities generating UBTI, and we don't have a lot of contrary authority saying that active loan origination by a fund gets ignored for UBTI purposes just because the LP is passive. The substantial authority exception works when you're taking a supportable position on an unsettled question. But this isn't unsettled — the regulations are pretty clear that regular lending activity is a trade or business under Section 513, and nothing in Section 512 says that income from a trade or business stops being UBTI just because you receive it through a partnership where you're not involved in management. The partnership attribution rules don't vanish because you're a limited partner with no control rights. Section 512(c) treats a partner's distributive share of partnership income as having the same character it had at the partnership level. If the fund is generating business income, your share is business income, and the fact that you didn't personally underwrite the loans doesn't change that characterization. Here's the practical reality: if this fund is marketing itself as doing origination work, if the PPM describes active credit underwriting and loan structuring, and if the economics depend on origination fees or servicing income in addition to interest, you are going to have a very hard time convincing an IRS agent that this is passive investment income. The opinion letter might keep you out of penalties if it's truly well-reasoned, but it's not going to win the underlying dispute. And even without penalties, you're still looking at the back taxes plus interest, which on a multi-year lookback could easily exceed what you'd have paid with the blocker in place. The savings only materialize if you never get challenged, and that's not a probability I'd bet $50 million on. What does the PPM say about fee structures — is the GP earning origination fees, structuring fees, or amendment fees that look like compensation for services rather than just a profit share on invested capital?
🛡️ Senior Advisor 2026-03-28 02:18
I think you're conflating two different questions here, and it's leading you to overstate the certainty of the IRS position. Yes, Section 512(c) gives a partner the same character of income that the partnership generates — I'm not disputing that. But the threshold question is whether the *partnership itself* is engaged in a trade or business, and that's where the facts actually matter. Rev. Rul. 78-51 addresses situations where a tax-exempt is directly making loans on a regular and continuous basis — it doesn't say that every fund that originates any loans is automatically per se engaged in a trade or business for all its partners regardless of the specific facts and circumstances. The case law on what constitutes a trade or business under Section 513 consistently looks at regularity, continuity, and the manner in which activities are conducted. If this fund makes twelve loan originations a year as part of a broader investment strategy, that's not the same as operating a commercial lending desk. If the participations are passive economic interests purchased in the secondary market, that's not the same as being the lead arranger on syndicated credits. The Whipple framework asks whether you're holding yourself out to others as engaged in the lending business — and a private fund with a closed group of institutional investors deploying committed capital is materially different from a bank or finance company operating in the commercial market. I'm not saying the position is risk-free, but I am saying the IRS doesn't automatically win this argument just because the fund does some origination work. And on the penalty question, let's be practical: if you obtain a reasoned opinion from fund counsel analyzing these specific facts and concluding that the LP's allocations qualify as excluded investment income, and you rely on that opinion in good faith, you have a substantial authority defense even if the opinion ultimately turns out to be wrong. That's exactly what the substantial authority standard is designed to protect — reasonable positions on complex questions where the law isn't black-and-white. The regulation you cited requires weight of authorities, but it doesn't require that the weight be 100-to-nothing in your favor. It requires a reasonable legal argument supported by applicable authorities, which is what a competent opinion would provide. Client, here's what I think you should actually do: go back to the fund manager and ask two specific questions. First, what percentage of the fund's investments are primary originations versus secondary purchases of existing loans, and what role does the fund play in servicing and workouts? Second, has fund counsel provided any written analysis on the UBTI question for LPs, and if so, can you see it? If the fund is doing 80% secondary purchases and the origination is incidental, you might have a very different risk profile than if it's a pure origination platform. Does that sound like information you can get from them?
🏢 Client 2026-03-28 02:18
I appreciate both of you laying out the arguments, but I'm getting two very different risk assessments here and I need to land on something concrete. Let me tell you what I'm hearing: one of you is saying this is a defensible position with manageable risk if we get the right opinion and the facts support passive treatment, and the other is saying the law is pretty clear that origination equals trade or business and we're just hoping not to get caught. Those can't both be right. Here's what I can tell you from the PPM — I've got it in front of me. The fund's strategy is described as "direct origination of senior secured loans to middle-market companies, with selective participation in syndicated credit facilities." The GP earns a management fee on committed capital and a standard carry, but there's also language about "sourcing fees" that may be paid by portfolio companies in connection with loan originations, and those fees are split 80/20 to the fund after expenses. The PPM says the GP will conduct credit underwriting, negotiate loan terms, and manage ongoing borrower relationships including amendments and waivers. It also says LPs have no approval rights over individual investments — the GP has sole discretion on all credit decisions. So based on that, here's my question: does the existence of those sourcing fees that flow through to LPs kill any argument that this is passive investment income? Because it sounds to me like the fund isn't just earning interest on deployed capital — it's earning fees for origination services, and that feels a lot more like business income than investment income. If that's the case, then I think we're done here and the blocker is necessary. But if there's still an argument even with the sourcing fees, I need to understand what that argument is and whether it's strong enough to justify the audit risk. What am I missing?
⚡ Junior Advisor 2026-03-28 02:19
The sourcing fees are a serious problem, and I think they significantly undermine any argument that this is pure investment income. When the fund is receiving fees from portfolio companies for origination services — even if those fees are characterized as reimbursements or are split with the LPs as you described — that's compensation for services rendered, not a return on invested capital. Section 512(b)(1) excludes dividends, interest, and gains from the sale of property, but it doesn't exclude fees for services. Those sourcing fees look like exactly the kind of business income that triggers UBTI, because the fund is being paid for the service of originating and structuring loans, not just for providing capital. Here's why this matters: even if 80% of the fund's economic return comes from interest income on the loans, if 20% comes from fees for origination services, the IRS can argue that the entire activity is a unitary trade or business under Section 513. The regulations don't let you bifurcate a single business operation into "investment" and "services" components when they're integrated. If the fund is sourcing deals, underwriting credit, negotiating terms, and getting paid fees for that work, it's operating a lending business. The fact that the fees are only part of the economics doesn't make the interest income suddenly passive — it makes the whole operation look like a business that earns both interest and fees, which is exactly what a commercial lender does. Now, I want to address something my colleague said about secondary purchases and the mix of activities. Even if the fund were doing 80% secondary and only 20% origination, the sourcing fees you just described suggest the origination piece is a material, active business line. The IRS doesn't apply a proportionality test where you get to exclude the "investment-y" income if the "business-y" income is small enough. If the fund is regularly engaged in origination for fees, that taints the character of the overall activity. I think the blocker is necessary here, and the 250-basis-point cost is the price of tax certainty. Would the fund consider restructuring so the sourcing fees stay at the GP level and don't flow through to LPs — that might actually change the analysis, but as currently structured, I don't see a clean path to avoiding UBTI.
🛡️ Senior Advisor 2026-03-28 02:19
You're right that the sourcing fees complicate this, but I don't think they're automatically fatal to a direct investment, and here's where I genuinely disagree with my colleague's analysis. The question isn't whether the fund receives fees — the question is what those fees represent economically and whether they're de minimis relative to the overall return profile. If these sourcing fees are being paid by borrowers as part of the cost of obtaining credit, and they represent 3-5% of the fund's total economics while 95% of the return comes from interest and gains, you've got a colorable argument that this is primarily an investment activity with incidental service fees, not a service business that happens to earn some interest. The IRS has actually addressed this exact scenario in the context of real estate partnerships. Revenue Ruling 73-105 involved a partnership that both held rental property and earned fees for property management services. The ruling concluded that the rental income remained passive investment income excluded from UBTI even though the partnership earned some service fees, because the service activity was incidental to the investment activity. Now, I'm not saying that ruling directly controls here — it's a different fact pattern — but it establishes the principle that you can have some service-type income without automatically converting your entire operation into a trade or business. The Section 513 regulations specifically say you look at whether an activity is "regularly carried on" in a manner comparable to commercial operations, and that's an inherently factual question. The bigger issue for me is actually the language about "managing ongoing borrower relationships including amendments and waivers." That suggests the fund isn't just originating and holding — it's actively servicing and working out credits, which starts to look a lot more like operating a commercial lending business than making investments. But even that depends on volume and intensity. If the fund has 25 portfolio loans and deals with one amendment request per quarter, that's very different from a commercial lender processing hundreds of servicing interactions per month. Client, do you have any sense from the PPM or the GP about how many loans the fund expects to hold, and how active the ongoing credit management actually is? Because that distinction might actually matter more than the sourcing fees for determining whether this crosses the line into regular business activity.
🏢 Client 2026-03-28 02:19
We are proceeding with the blocker structure — the endowment will invest through a wholly-owned Cayman corporation that will be the LP in the fund. The key risk is that the sourcing fees flowing to LPs combined with active loan servicing make this a lending business generating UBTI, and skipping the blocker would expose us to back taxes, penalties, and interest that could exceed the $1.25 million annual cost we're paying to avoid that outcome. Next week I will instruct fund counsel to prepare the blocker entity formation documents and update our subscription agreement to reflect the offshore corporate investor.
🔍 IRS Examiner 2026-03-28 02:20
# IRS EXAMINATION MEMORANDUM **Form 1120 — Cayman Islands Corporation (Blocker Entity)** **Tax Matters Partner: [Private Credit Fund GP]** **Related Tax-Exempt Investor: [University Endowment — Form 990]** --- ## ISSUE Whether the interposition of a foreign blocker corporation between a Section 501(c)(3) university endowment and a domestic private credit fund constitutes a valid tax planning structure, or whether the blocker entity lacks sufficient substance and should be disregarded, resulting in direct attribution of unrelated business taxable income to the endowment. Whether the blocker corporation is properly subject to U.S. corporate income tax on effectively connected income from the fund's lending activities. --- ## GOVERNMENT'S POSITION The government's position is that while the blocker structure is facially valid and achieves its stated purpose of insulating the endowment from UBTI, the examination should focus on whether the Cayman corporation has been properly structured and is being operated with sufficient economic substance to be respected as a separate taxpayer. The taxpayer has effectively conceded that the underlying fund is generating business income through regular loan origination activities, receipt of sourcing fees, and active credit servicing — otherwise, the blocker would be unnecessary. The primary vulnerability is whether the blocker entity has adequate substance beyond its tax function: Does it maintain a real office, hold board meetings, have independent directors, pay local fees and expenses, and maintain separate books and records? If the Cayman corporation is merely a signature entity with no operations, employees, or decision-making capacity, the Service could argue it should be disregarded under substance-over-form principles, causing the fund income to flow directly to the endowment as UBTI. --- ## PROPOSED ADJUSTMENT If the blocker entity is found to lack sufficient substance, the adjustment would be to disregard the Cayman corporation and treat the endowment as receiving its distributive share of partnership income directly from the fund. This would result in the endowment recognizing unrelated business taxable income under Section 512(a)(1) and filing Form 990-T for all years under examination. Assuming $6 million in annual fund allocations as discussed, the endowment would owe tax at trust rates under Section 511(b), which could exceed $2 million annually after accounting for the compressed trust brackets. The endowment would also be liable for accuracy-related penalties under Section 6662(a) if the understatement exceeds the statutory threshold and substantial authority cannot be demonstrated, plus interest compounded from the original due dates. The blocker corporation itself may have additional exposure if it failed to file Forms 1120 or 5471 as required, or if it did not properly report effectively connected income. --- ## BEST SUPPORTING AUTHORITY **IRC Section 7701(a)(1) and (2):** Define "person" and "partnership" but provide no safe harbor for entities lacking business purpose or economic substance beyond tax avoidance; these definitional provisions are subject to common-law doctrines requiring genuine separate existence. **Treasury Regulation 1.701-2 (Anti-Abuse Rule):** Authorizes the Commissioner to recast partnership transactions where the partnership is formed or availed of with a principal purpose to reduce substantially the present value of the partners' aggregate federal tax liability in a manner inconsistent with the intent of subchapter K. **Gregory v. Helvering, 293 U.S. 465 (1935):** Established that transactions lacking business purpose or economic substance beyond tax avoidance may be disregarded for federal tax purposes; while not directly addressing blocker entities, this landmark case articulates the principle that form must yield to substance where a structure serves no legitimate non-tax purpose. --- ## WEAKNESSES The taxpayer will argue that the blocker structure is widely accepted in the investment management industry, has been consistently recognized by the Service in private letter rulings to other taxpayers, and serves the legitimate non-tax purpose of enabling tax-exempt investors to participate in funds that would otherwise generate UBTI — making this standard commercial planning, not abusive tax avoidance.
Quality Review 4.2 / 5 by Vera
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Citation Accuracy 4
Fact Pattern 5
Advisor Disagreement 5
Client Realism 5
IRS Examiner 3
Educational Value 4
⚠ Flagged Citations Rev. Rul. 73-105 cited by Senior Advisor regarding rental property partnerships with incidental service fees. This ruling exists but addresses real estate partnerships, not lending activities, and its application to loan origination fees is a stretch. The citation is real but potentially misapplied to strengthen an argument. Treasury Regulation 1.701-2 cited by IRS Examiner as supporting blocker disregard — this is the partnership anti-abuse rule, which typically addresses abusive partnership allocations, not entity disregard. Its application to blocker substance challenges is questionable.
What Worked The advisor disagreement is outstanding — genuinely substantive tension between Junior's conservative "the facts are hard to defend" position and Senior's "probability-weighted risk analysis" approach. Both positions have merit, creating real educational value. The Client's evolution from cost-conscious skeptic to decision-maker asking precisely the right questions ("what happens to the sourcing fees?") feels authentic. The fact pattern is perfectly realistic — this is exactly the blocker decision every endowment CIO faces with private credit funds.
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