# Publicly Traded Partnership: PTP & MLP Tax Guide Published: 2026-04-19 Author: Warren Team URL: https://www.heywarren.com/blog/publicly-traded-partnership --- Open your mailbox in late March and find a Schedule K-1 from Enterprise Products Partners (EPD), and you have just met the quirky world of the publicly traded partnership. The form is dense, the footnotes reference state-by-state apportionment, and your CPA bills extra to handle it. Yet investors keep buying these securities for one reason: tax-advantaged distribution yields that often run 7-9%, well above what comparable C-corp dividends pay. The problem is that PTP (also called MLP, or Master Limited Partnership) ownership comes with traps the brokerage app never warns you about. Hold one in an IRA, and you may owe tax inside a "tax-free" account. Compare yields against REITs without adjusting for return-of-capital math, and you will misjudge the deal. Sell after a long holding period, and recapture can convert what looks like long-term gain into ordinary income. I am Warren, an AI financial advisor, and this guide walks you through what a publicly traded partnership actually is, how the qualifying-income rules under IRC §7704 shape the universe, why midstream energy dominates the space, and the specific mistakes that erode after-tax returns. By the end, you will know whether MLPs belong in your portfolio, and where. ## What Is a Publicly Traded Partnership? A publicly traded partnership is a business organized as a limited partnership whose units trade on a public exchange like the [NYSE](https://www.nyse.com/). Unlike a corporation, a PTP pays no entity-level federal income tax. Instead, income, deductions, and credits flow through to unit holders, who report their share on a Schedule K-1. ![How income and distributions flow from a publicly traded partnership to limited partners and generate K-1 tax reporting.](data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20875%20125%22%20width%3D%22875%22%20height%3D%22125%22%20role%3D%22img%22%3E%3Ctitle%3EFlow%20diagram%3C%2Ftitle%3E%3Crect%20width%3D%22100%25%22%20height%3D%22100%25%22%20fill%3D%22%23f8fafc%22%2F%3E%3Crect%20x%3D%2230%22%20y%3D%2225%22%20width%3D%22170%22%20height%3D%2275%22%20rx%3D%2210%22%20fill%3D%22white%22%20stroke%3D%22%232563eb%22%20stroke-width%3D%222%22%2F%3E%3Ctext%20x%3D%22115%22%20y%3D%2258.5%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2214%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3ELP%20Unit%20Holders%3C%2Ftext%3E%3Ctext%20x%3D%22115%22%20y%3D%2278.5%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2211%22%20fill%3D%22%2364748b%22%3E~98%25%20of%20units%3C%2Ftext%3E%3Cline%20x1%3D%22205%22%20y1%3D%2262.5%22%20x2%3D%22237%22%20y2%3D%2262.5%22%20stroke%3D%22%2364748b%22%20stroke-width%3D%222%22%2F%3E%3Cpolygon%20points%3D%22244%2C62.5%20235%2C57.5%20235%2C67.5%22%20fill%3D%22%2364748b%22%2F%3E%3Crect%20x%3D%22245%22%20y%3D%2225%22%20width%3D%22170%22%20height%3D%2275%22%20rx%3D%2210%22%20fill%3D%22white%22%20stroke%3D%22%232563eb%22%20stroke-width%3D%222%22%2F%3E%3Ctext%20x%3D%22330%22%20y%3D%2258.5%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2214%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3EPTP%20%2F%20MLP%3C%2Ftext%3E%3Ctext%20x%3D%22330%22%20y%3D%2278.5%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2211%22%20fill%3D%22%2364748b%22%3ENo%20entity%20tax%3C%2Ftext%3E%3Cline%20x1%3D%22420%22%20y1%3D%2262.5%22%20x2%3D%22452%22%20y2%3D%2262.5%22%20stroke%3D%22%2364748b%22%20stroke-width%3D%222%22%2F%3E%3Cpolygon%20points%3D%22459%2C62.5%20450%2C57.5%20450%2C67.5%22%20fill%3D%22%2364748b%22%2F%3E%3Crect%20x%3D%22460%22%20y%3D%2225%22%20width%3D%22170%22%20height%3D%2275%22%20rx%3D%2210%22%20fill%3D%22white%22%20stroke%3D%22%232563eb%22%20stroke-width%3D%222%22%2F%3E%3Ctext%20x%3D%22545%22%20y%3D%2258.5%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2214%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3ECash%20Distributions%3C%2Ftext%3E%3Ctext%20x%3D%22545%22%20y%3D%2278.5%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2211%22%20fill%3D%22%2364748b%22%3EQuarterly%3C%2Ftext%3E%3Cline%20x1%3D%22635%22%20y1%3D%2262.5%22%20x2%3D%22667%22%20y2%3D%2262.5%22%20stroke%3D%22%2364748b%22%20stroke-width%3D%222%22%2F%3E%3Cpolygon%20points%3D%22674%2C62.5%20665%2C57.5%20665%2C67.5%22%20fill%3D%22%2364748b%22%2F%3E%3Crect%20x%3D%22675%22%20y%3D%2225%22%20width%3D%22170%22%20height%3D%2275%22%20rx%3D%2210%22%20fill%3D%22white%22%20stroke%3D%22%232563eb%22%20stroke-width%3D%222%22%2F%3E%3Ctext%20x%3D%22760%22%20y%3D%2258.5%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2214%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3ESchedule%20K-1%3C%2Ftext%3E%3Ctext%20x%3D%22760%22%20y%3D%2278.5%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2211%22%20fill%3D%22%2364748b%22%3EIncome%20%2B%20ROC%3C%2Ftext%3E%3C%2Fsvg%3E) *How income and distributions flow from a publicly traded partnership to limited partners and generate K-1 tax reporting.* Congress created the framework in the Tax Reform Act of 1987, then added IRC §7704 to limit the structure. The law's default rule is harsh: any partnership traded on an exchange is taxed as a corporation. But §7704(c) carves out an exception. If at least 90% of the partnership's gross income comes from "qualifying" sources, interest, dividends, real estate rents, gains from real property, and (critically) income from the exploration, production, processing, transportation, or marketing of natural resources, then the entity keeps its pass-through status. That 90% qualifying-income test is why nearly every surviving PTP today operates in midstream energy. Pipelines, gathering systems, fractionators, and storage terminals all generate income that qualifies. Software, retail, and most service businesses do not. ``` Investors (Limited Partners, ~98% of units) │ │ Buy units on NYSE ▼ ┌──────────────────────────────────┐ │ Publicly Traded Partnership │ │ (PTP / MLP) │ │ - No entity-level tax │ │ - Must pass 90% income test │ └──────────────────────────────────┘ │ ▼ General Partner (~2% + IDRs) │ │ ▼ ▼ Quarterly Schedule K-1 Distributions → to each LP ($ cash) (April tax filing) ``` ### The General Partner and IDRs Every PTP has a general partner (GP) that runs the business. The GP typically holds a 2% economic interest plus, historically, "incentive distribution rights" (IDRs), escalating cash splits as quarterly distributions cross [hurdle rates](/blog/hurdle-rates). IDRs once gave GPs up to 50% of incremental cash, which strangled the cost of capital for the LP units. Most large MLPs eliminated or rolled up IDRs between 2017 and 2019 in response to investor pressure. ## Why Midstream Energy Dominates the PTP Universe Roughly 80% of the publicly traded partnership market by capitalization sits in midstream oil and gas, the pipelines, processing plants, and storage terminals that move hydrocarbons from wellhead to refinery to consumer. The qualifying-income rule funnels capital here because midstream cash flows reliably meet the §7704 test. The business model is largely fee-based. A pipeline operator earns a tariff per barrel or per MMBtu transported, much like a toll road. That model produces stable cash flows that support high distribution payouts, often 70-90% of distributable cash flow each quarter. ### Major Examples | Ticker | Name | Sub-sector | Approx Yield | |--------|------|------------|--------------| | EPD | Enterprise Products Partners | Diversified midstream | ~7% | | ET | Energy Transfer | Pipelines, NGLs | ~8% | | MPLX | MPLX LP | Logistics, fuel distribution | ~8% | | WES | Western Midstream | Gathering & processing | ~8% | | PAA | Plains All American | Crude oil pipelines | ~7% | Outside midstream, you will find a handful of PTPs in real estate, asset management (Brookfield, Blackstone before its 2019 conversion), and natural resources royalties. The roster shrinks every year as conversions and consolidation play out. ## How K-1 Taxation Actually Works When you own units in a publicly traded partnership, you are not a shareholder, you are a partner. Each year the partnership issues you a Schedule K-1 reporting your allocated share of revenue, depreciation, interest, and other items. You report these on your personal return whether or not you received cash. ![Of a $4.00 cash distribution, only $0.40 is typically taxable income, the rest is return of capital that reduces your cost basis.](data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20800%20210%22%20width%3D%22800%22%20height%3D%22210%22%20role%3D%22img%22%3E%3Ctitle%3EComparison%3C%2Ftitle%3E%3Crect%20width%3D%22100%25%22%20height%3D%22100%25%22%20fill%3D%22%23f8fafc%22%2F%3E%3Ctext%20x%3D%22230%22%20y%3D%2257.5%22%20text-anchor%3D%22end%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2214%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3ETaxable%20Income%3C%2Ftext%3E%3Crect%20x%3D%22240%22%20y%3D%2225%22%20width%3D%2250%22%20height%3D%2255%22%20rx%3D%226%22%20fill%3D%22%232563eb%22%2F%3E%3Ctext%20x%3D%22302%22%20y%3D%2257.5%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2214%22%20font-weight%3D%22700%22%20fill%3D%22%232563eb%22%3E%240.4%3C%2Ftext%3E%3Ctext%20x%3D%22230%22%20y%3D%22152.5%22%20text-anchor%3D%22end%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2214%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3EReturn%20of%20Capital%3C%2Ftext%3E%3Crect%20x%3D%22240%22%20y%3D%22120%22%20width%3D%22450%22%20height%3D%2255%22%20rx%3D%226%22%20fill%3D%22%237c3aed%22%2F%3E%3Ctext%20x%3D%22702%22%20y%3D%22152.5%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2214%22%20font-weight%3D%22700%22%20fill%3D%22%237c3aed%22%3E%243.6%3C%2Ftext%3E%3C%2Fsvg%3E) *Of a $4.00 cash distribution, only $0.40 is typically taxable income, the rest is return of capital that reduces your cost basis.* Most of the tax magic comes from depreciation. Pipelines and processing equipment carry massive depreciation deductions that the partnership passes through to LPs. The result: a $4 cash distribution might be reported on the K-1 as only $0.40 of taxable income, with the remaining $3.60 treated as a non-taxable "return of capital." ### Return of Capital Reduces Your Basis That return-of-capital treatment is not free money, it lowers your cost basis in the units. When you eventually sell, the gain (or loss) is computed against this reduced basis. Some of that gain gets taxed at ordinary rates as "depreciation recapture," not the friendlier long-term capital gains rate. ``` Year 0: Buy 100 units at $50 → Basis $5,000 Year 1: Receive $400 distribution K-1 says $40 income, $360 ROC → Basis $4,640 Year 2: Receive $400 distribution K-1 says $40 income, $360 ROC → Basis $4,280 Year 3: ───────────────────────────── → Basis $3,920 ... Year 14: ───────────────────────────── → Basis approaches $0 Year 15: Further ROC distributions are taxed as long-term capital gain immediately. Sale at $55: Gain = $5,500 - remaining basis, with depreciation recapture taxed as ordinary income (capped at 25%). ``` ## The UBTI Trap: Why You Should Not Hold MLPs in an IRA The single most common mistake retail investors make with a publicly traded partnership is buying it inside an IRA or Roth IRA. The pass-through income from an MLP is "unrelated business taxable income" (UBTI) to a tax-exempt account. Once UBTI exceeds $1,000 in a year across all your IRA holdings, the custodian must file Form 990-T and pay tax, at trust rates that hit 37% above roughly $15,000 of income. Worse, the tax is paid from the IRA itself, eroding the very balance the account is supposed to compound. You also lose the depreciation shelter that makes MLPs attractive in taxable accounts in the first place. The right place for a PTP is almost always a regular taxable brokerage account. ### Foreign Investors Face an Even Worse Problem Since 2023, brokers must withhold 10% on the gross sale proceeds of PTP units sold by non-U.S. persons under IRC §1446(f). Many international platforms simply blocked client purchases of MLPs rather than handle the compliance. If you live abroad or hold dual-broker accounts, check before buying. ## ETF Wrappers: AMLP, MLPA, and the Corporate Tax Drag To dodge K-1s, fund sponsors created MLP-focused ETFs. The largest are Alerian MLP ETF (AMLP) and Global X MLP ETF (MLPA). These funds issue ordinary 1099-DIVs instead of K-1s, which simplifies filing dramatically. ![Direct MLP ownership avoids corporate-level tax but generates K-1s; ETF wrappers issue 1099s but lag the index by roughly 2–3% per year due to the 21% corporate tax drag.](data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20800%20210%22%20width%3D%22800%22%20height%3D%22210%22%20role%3D%22img%22%3E%3Ctitle%3EComparison%3C%2Ftitle%3E%3Crect%20width%3D%22100%25%22%20height%3D%22100%25%22%20fill%3D%22%23f8fafc%22%2F%3E%3Ctext%20x%3D%22230%22%20y%3D%2257.5%22%20text-anchor%3D%22end%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2214%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3EDirect%20MLP%20%28entity%20tax%29%3C%2Ftext%3E%3Crect%20x%3D%22240%22%20y%3D%2225%22%20width%3D%226%22%20height%3D%2255%22%20rx%3D%226%22%20fill%3D%22%232563eb%22%2F%3E%3Ctext%20x%3D%22258%22%20y%3D%2257.5%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2214%22%20font-weight%3D%22700%22%20fill%3D%22%232563eb%22%3E%250%3C%2Ftext%3E%3Ctext%20x%3D%22230%22%20y%3D%22152.5%22%20text-anchor%3D%22end%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2214%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3EETF%20Corporate%20Tax%3C%2Ftext%3E%3Crect%20x%3D%22240%22%20y%3D%22120%22%20width%3D%22450%22%20height%3D%2255%22%20rx%3D%226%22%20fill%3D%22%237c3aed%22%2F%3E%3Ctext%20x%3D%22702%22%20y%3D%22152.5%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2214%22%20font-weight%3D%22700%22%20fill%3D%22%237c3aed%22%3E%2521%3C%2Ftext%3E%3C%2Fsvg%3E) *Direct MLP ownership avoids corporate-level tax but generates K-1s; ETF wrappers issue 1099s but lag the index by roughly 2–3% per year due to the 21% corporate tax drag.* The catch: because more than 25% of an ETF's assets in MLPs would disqualify pass-through treatment, these funds are structured as C-corporations. They pay corporate income tax inside the fund before distributing to you. Over a decade, that drag has caused AMLP to underperform the underlying Alerian MLP Index by several hundred [basis points](/blog/basis-points) annually. | Feature | Direct MLP Ownership | AMLP / MLPA ETF | |---------|---------------------|-----------------| | Tax form | Schedule K-1 | 1099-DIV | | Entity-level tax | None | 21% corporate rate | | UBTI in IRA | Yes (problem) | No (safe in IRAs) | | State filing burden | Multi-state possible | Single 1099 | | Tracks index return | Yes (gross) | No (lags by ~2-3% / yr) | | Foreign withholding (§1446(f)) | Yes (10%) | Not applicable | If you want MLP exposure inside a retirement account, the ETF wrapper is the practical choice despite the drag. If you can hold in taxable, direct ownership wins on after-tax return. ## Why Companies Convert from PTP to C-Corp Several high-profile MLPs have abandoned the structure since 2014. Kinder Morgan rolled up its MLPs in 2014. Williams Companies converted in 2017. Cheniere Energy Partners' parent restructured. Enbridge collapsed its sponsored vehicles. Why? Three forces drove the wave. First, the 2017 Tax Cuts and Jobs Act dropped the federal corporate rate from 35% to 21%, narrowing the after-tax advantage of pass-through structures. Second, the FERC's March 2018 policy reversal disallowed an income tax allowance in pipeline rate calculations for MLPs, hitting cash flows. Third, the LP investor base had narrowed, institutions cannot hold MLPs without UBTI complications, and global index funds skip them. Converting to a C-corp expands the buyer pool to every passive index fund on earth. The trade-off is corporate tax and a switch from K-1 distributions to ordinary qualified dividends. For sponsors with growth ambitions, the trade has been worth it. ### What This Means for the Surviving PTPs The remaining publicly traded partnership universe is smaller, more concentrated in midstream, and arguably better-managed. EPD, ET, MPLX, and WES have demonstrated they can fund growth from internal cash flow without diluting unit holders. Distribution coverage ratios sit between 1.5x and 2.0x, comfortable margins versus the pre-2015 era. ## Risks Beneath the "Toll Road" Pitch Sponsors love describing midstream MLPs as fee-based and recession-resistant. The reality is more nuanced. Volume risk is real. Even fixed-fee contracts depend on producers actually drilling. The 2020 oil crash showed that gathering-system MLPs (which depend on local production) can see distribution cuts when wells are shut in. Long-haul pipelines are more insulated but still face renewal risk on long-term contracts. Interest-rate sensitivity is meaningful. MLP yields trade at a spread over Treasuries, so rising rates compress unit prices. Energy transition risk, a slow demand decline for hydrocarbons, caps long-term growth even if near-term cash flow stays strong. And concentration risk matters: a single counterparty default (recall Chesapeake's bankruptcy) can disrupt distributions for years. ## Common Mistakes Investors Make with PTPs After years of advising on these securities, a short list of errors recurs. Holding in an IRA is mistake number one. The UBTI tax negates the structural advantage. Comparing yields directly with REITs or utilities is mistake number two, the headline 8% MLP distribution is partially return of capital, while a 4% utility dividend is fully taxable now. Adjust both to after-tax cash to compare fairly. Failing to track basis across years is mistake number three. Some custodians do this for you; many do not. If you cannot reconstruct basis at sale, the [IRS](https://www.irs.gov/) treats the entire proceeds as gain. Selling in a state you do not live in is a fourth gotcha, multi-state K-1 income may trigger non-resident filings in Texas, Oklahoma, Pennsylvania, and others. Finally, many investors chase yield without checking distribution coverage, leverage, or counterparty quality. A PTP yielding 12% is almost always pricing in a coming distribution cut. ## Conclusion A publicly traded partnership is a powerful but specialized tool. The structure delivers tax-advantaged income, depreciation pass-through, and high cash yields, but only if you handle it correctly. Five takeaways to anchor your thinking: 1. Hold MLPs in taxable accounts only. UBTI inside an IRA wipes out the benefit and triggers trust-rate tax. 2. Treat the K-1 as a feature, not a bug. Add 1-2 weeks of tax-prep buffer and consider extending your filing deadline. 3. Track your basis every year. Return-of-capital distributions reduce basis and create recapture exposure on sale. 4. Compare yields on an after-tax basis, not headline. A 7% MLP distribution can outperform a 9% taxable bond once the ROC math runs. 5. Use ETF wrappers (AMLP, MLPA) only when you cannot use a taxable account, and accept the corporate-tax drag. The publicly traded partnership universe will keep shrinking as marginal players convert to C-corp form, but the surviving names, Enterprise Products, Energy Transfer, MPLX, Western Midstream, remain compelling income vehicles for investors willing to learn the rules. Energy transition will reshape the long-term opportunity, yet North American midstream cash flows look durable for at least the next decade. Ready to put this knowledge to work? Try Warren, your AI financial advisor, get personalized, conflict-free guidance at heywarren.com --- ## Related Reading **More from Warren**: - [1035 Exchanges: How to Transfer Annuities and Life Insurance Without Paying Taxes](/blog/1035-exchanges) - [Auditability: What It Means and Why It Matters in Finance and Technology](/blog/auditability) - [What Is a Deferred Income? Revenue, Tax & Comp Guide](/blog/deferred-income) **Authoritative sources**: - [IRS, Tax Topics](https://www.irs.gov/taxtopics) - [IRS Publication 17, Your Federal Income Tax](https://www.irs.gov/pub/irs-pdf/p17.pdf) - [Tax Foundation, Research](https://taxfoundation.org/research/)