Understanding the Legal Foundations: How LLPs and MLPs Are Built
An LLP—Limited Liability Partnership—is a private business structure where all partners enjoy limited personal liability. That means if one partner gets sued, the others don’t lose their homes. It’s designed for service-based professions where trust and reputation matter more than inventory or pipelines. Think of a law firm in Chicago with 18 partners—each one contributes time and expertise, but no one wants to go bankrupt because a colleague missed a filing deadline. This structure shields them collectively, yet keeps the tax setup simple: profits flow directly to partners, no corporate tax in between. It’s been around since the 1990s, adopted in all 50 states (though Texas, for example, calls it an RLLP—Registered Limited Liability Partnership).
The Role of Partnership Agreements in LLPs
These agreements aren’t just formalities—they’re battle plans. They define who gets paid what, how disputes are resolved, and under what circumstances someone gets kicked out. Some firms tie profit shares to billable hours; others distribute earnings equally regardless of workload. One firm in Seattle had a clause that reduced a partner’s share by 15% if they took more than six weeks of vacation. Unusual? Yes. Enforceable? Only if everyone signed off on it. And that’s exactly where people don’t think about this enough: the flexibility of an LLP can become its downfall if the agreement is vague or outdated. A single ambiguous sentence about retirement payouts once led to a two-year legal fight in a Boston accounting practice.
Formation Requirements for MLPs
Master Limited Partnerships are a different beast. They’re registered with the SEC and can trade on public exchanges—like Kinder Morgan or Enterprise Products Partners listed on the NYSE. But—and this is critical—they must earn at least 90% of their income from qualifying pipelines, storage, mining, or real estate rents. That’s not a suggestion; it’s IRS code Section 7704. Step outside that boundary, and the whole tax advantage collapses. Forming one isn’t something you do over a weekend in Delaware. You need audited financials, a prospectus, and a board of directors. The setup cost? Between $500,000 and $1.2 million, depending on complexity. Most are structured with two classes of partners: general partners (who run the operation) and limited partners (who just invest).
Ownership and Control: Who Calls the Shots?
In an LLP, control is usually shared. Each partner has a vote, sometimes weighted by ownership stake. Decisions about hiring, office locations, or mergers require consensus—or at least a supermajority. It’s democratic, messy, and slow. But it works when everyone is hands-on. Contrast that with an MLP, where the general partner often controls the board and makes strategic decisions unilaterally. Limited partners? They get distributions every quarter, but they don’t vote on expansion projects or executive pay. You’re along for the ride, not driving. That changes everything if the GP starts taking excessive fees—something that happened at BreitBurn Energy in 2015, leading to investor lawsuits and eventual bankruptcy. The issue remains: high yields look great until you realize you have zero influence over management.
Tax Implications: The Hidden Trade-Offs
Both structures offer pass-through taxation, meaning the entity itself doesn’t pay federal income tax. Profits go straight to partners, who report them on individual returns. Simple in theory. But the devil’s in the details. With an LLP, your taxable income might include undistributed earnings—you owe tax even if the firm reinvested the cash. An MLP adds another layer: Form K-1 instead of a 1099-DIV. And K-1s are notorious for arriving late—sometimes in March—because they require data from multiple subsidiaries. Worse, if you hold MLPs in an IRA, unrelated business taxable income (UBTI) rules may apply if annual gains exceed $1,000. Not many people realize this until the IRS sends a notice. Because yes, you can get audited for something your retirement account earned.
Depreciation and Cost Basis Adjustments
MLPs love depreciation. They own physical assets—pipelines, compressors, storage tanks—that lose value on paper even if they’re functioning perfectly. That creates non-cash deductions, reducing your taxable income. But—and this is where it gets tricky—your cost basis drops accordingly. Sell later, and you might face a hefty capital gains bill even if your overall return was modest. Imagine buying $50,000 of Energy Transfer LP units. Over five years, you receive $18,000 in distributions, but $13,000 are labeled “return of capital.” Your basis falls to $37,000. Sell for $52,000, and you owe taxes on $15,000 in gains. But your net profit was only $2,000. That’s how accounting illusions distort reality. And that’s why some advisors say MLPs belong only in taxable accounts—ironic, given the complexity they introduce.
LLP vs MLP: Which Structure Fits Your Goals?
If you’re launching a consulting firm with three colleagues, an LLP makes sense. Liability protection, shared control, straightforward taxes. But if you’re building a midstream energy company and want access to public capital, an MLP offers liquidity and a steady investor base. However, MLPs have struggled since 2014. Low oil prices, ESG pressure, and rising interest rates crushed their appeal. Distributions that once yielded 8% now average closer to 5.5%, and 23% of all MLPs were acquired or dissolved between 2018 and 2022. We’re far from the boom years. Meanwhile, LLPs remain stable—but only because they’re not exposed to markets. They grow slowly, often regionally. So which is better? It depends on scale, appetite for risk, and whether you want to answer to Wall Street every quarter.
Market Liquidity and Investor Access
MLPs trade like stocks. You buy them through brokers, sell them in seconds, and track price swings on your phone. Ticker symbols, volume data, analyst ratings—full transparency. LLP units? Not so much. Transfers require partner approval. Want to cash out? You’ll negotiate a buyout, possibly over months. There’s no bid-ask spread, no ticker symbol, no liquidity. But—and here’s a nuance contradicting conventional wisdom—that lack of liquidity can be a feature, not a bug. It prevents panic selling during downturns. One architecture LLP in Denver survived the 2008 crash because no partner could bail overnight. They weathered the storm by cutting salaries, not selling assets. Sometimes, being locked in is the safest move.
Regulatory Scrutiny and Reporting Burdens
MLPs file quarterly earnings, 10-Ks, and must comply with Sarbanes-Oxley. The SEC watches closely. One misstep in revenue classification and you’re in hot water. LLPs? Minimal oversight. No public filings, no shareholder letters. But state licensing boards can investigate professional misconduct. A malpractice suit against one partner could trigger a review of the entire firm’s compliance. The problem is, this dual-track system creates blind spots. A geologist in an MLP might overlook environmental risks because he’s focused on earnings per unit. A partner in an LLP might ignore billing irregularities because “we’ve always done it this way.” Human nature doesn’t change just because the structure does.
Frequently Asked Questions
Can an LLP Convert to an MLP?
Technically, yes—but it’s not a simple flip. You’d need to restructure as a publicly traded entity, meet IRS qualifying income tests, and register with the SEC. Few have tried; even fewer succeeded. In 2006, a real estate LLP in Austin attempted it to attract outside investors. They spent $800,000 on legal fees and abandoned the plan when projected yields fell below 6%. The transaction costs killed the economics. Suffice to say, it’s rarely worth the hassle.
Are MLP Distributions Guaranteed?
No. They’re discretionary, like dividends. But investors expect consistency. If an MLP cuts its payout—like Williams Partners did in 2016 (down 45%)—the stock often plunges 30% overnight. Market perception matters more than contract terms. And because most MLP investors rely on that income, any hint of instability triggers mass exits.
Do LLP Partners Pay Self-Employment Tax?
Generally, yes. Their share of profits is subject to Social Security and Medicare taxes—up to 15.3%. MLP limited partners? Usually not. Their distributions are mostly return of capital or qualified income, exempt from self-employment tax. That’s one reason retirees used to flock to MLPs before the yield decline.
The Bottom Line
LLPs serve people who work together and want to limit risk while keeping control internal. MLPs serve capital markets, offering tax-efficient income from hard assets—but with strings attached. The irony? Both were meant to combine partnership benefits with structural advantages, yet only MLPs opened the door to public trading, and at a cost. I find this overrated: the idea that either is a “better” model. Context decides. For a law firm in Minneapolis, an LLP is the only logical choice. For a pipeline operator in Houston, an MLP once made sense—before ESG and low yields changed the game. Today? Many MLPs are converting to C-corps. Data is still lacking on long-term performance post-conversion, and honestly, it is unclear whether the model can survive another commodity downturn. But if you’re weighing options now, ask yourself: do you want to run a business, or feed a financial instrument? Because they’re not the same thing. And that’s the real difference.