# PTPs (Publicly Traded Partnerships): What They Are and How They're Taxed Published: 2026-04-10 Author: Warren Team URL: https://www.heywarren.com/blog/ptps-meaning --- Publicly Traded Partnerships (PTPs) are business entities that are structured as partnerships, with pass-through taxation, but whose ownership interests trade on public exchanges just like corporate stock. The most common PTPs in the US are Master Limited Partnerships (MLPs), which dominate the midstream energy infrastructure sector. PTPs offer a unique combination: the liquidity of publicly traded securities combined with the tax efficiency of partnership structures. But they also come with a layer of tax complexity that catches many investors off guard, particularly around K-1 schedules, Unrelated Business Taxable Income (UBTI), and Section 751 gain. ## What Is a Publicly Traded Partnership? A PTP is a partnership whose interests (called units, not shares) are traded on a national securities exchange. Unlike a corporation, the entity itself pays no income tax, income, gains, losses, and deductions "pass through" to unitholders, who report them on their personal tax returns. ![Income and deductions pass through from the PTP entity to unitholders, who report them on personal returns via Schedule K-1.](data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20660%20125%22%20width%3D%22660%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%3EPTP%20Entity%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%3ENo%20entity%20tax%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%3ESchedule%20K-1%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%3EPer%20unitholder%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%3EUnitholder%20Return%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%3EPersonal%20taxes%3C%2Ftext%3E%3C%2Fsvg%3E) *Income and deductions pass through from the PTP entity to unitholders, who report them on personal returns via Schedule K-1.* **Requirements under [IRS](https://www.irs.gov/) rules**: For a partnership to maintain PTP status (and avoid being treated as a corporation for tax purposes), at least **90% of gross income** must come from qualifying sources, which include: - Natural resource income (exploration, extraction, transportation, processing) - Real property rents - Interest, dividends, capital gains This explains why most PTPs are in the energy sector (oil and gas pipelines, storage, processing), those activities generate qualifying income naturally. ## MLPs: The Most Common PTP Structure Master Limited Partnerships (MLPs) are the dominant PTP form. Major examples include: - **Enterprise Products Partners (EPD)**: Natural gas pipelines and fractionation - **Energy Transfer Partners (ET)**: Crude oil and natural gas infrastructure - **MPLX**: Marathon Petroleum's midstream operations - **Plains All American Pipeline (PAA)**: Crude oil transportation and terminaling MLPs typically: - Trade on [NYSE](https://www.nyse.com/) or NASDAQ under ticker symbols - Pay large quarterly cash distributions (often 6–10% yield) - Own fee-based infrastructure assets with long-term contracts - Depreciate large capital asset bases, creating significant tax shield ## How PTPs Are Taxed: The K-1 Complexity Unlike stocks (which generate Form 1099 for dividends), PTPs generate a **Schedule K-1** for each unitholder, showing: - Ordinary income (or loss) allocated from the partnership - Capital gains and losses - Tax-exempt income - Distribution information - Section 199A deduction (qualified business income deduction) ![A $1,000 cash distribution may generate only $200 of taxable income, the $800 difference is return of capital that reduces 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%3ECash%20Received%3C%2Ftext%3E%3Crect%20x%3D%22240%22%20y%3D%2225%22%20width%3D%22450%22%20height%3D%2255%22%20rx%3D%226%22%20fill%3D%22%232563eb%22%2F%3E%3Ctext%20x%3D%22702%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%241.0K%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%3ETaxable%20Income%3C%2Ftext%3E%3Crect%20x%3D%22240%22%20y%3D%22120%22%20width%3D%2290%22%20height%3D%2255%22%20rx%3D%226%22%20fill%3D%22%237c3aed%22%2F%3E%3Ctext%20x%3D%22342%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%24200%3C%2Ftext%3E%3C%2Fsvg%3E) *A $1,000 cash distribution may generate only $200 of taxable income, the $800 difference is return of capital that reduces cost basis.* **K-1 timing problem**: K-1s typically arrive in late February or March, later than most 1099s. This can delay tax filing and requires either extension filing or an amendment. **Distribution vs. taxable income**: A key PTP feature is that cash distributions are often NOT equal to taxable income. Depreciation deductions frequently exceed income, creating a situation where: - Cash distribution received: $1,000 - Taxable income allocated: $200 (after depreciation) - Reduction in cost basis: $800 (the rest of the distribution is a return of capital) This "return of capital" reduces your cost basis over time. When you sell, you'll owe capital gains tax on the full appreciated value plus the cumulative return of capital, a potentially large deferred tax [liability](/blog/examples-liabilities). ## UBTI: The Tax-Exempt Account Problem A critical issue for retirement accounts (IRA, 401k, 403b): PTP income is classified as **Unrelated Business Taxable Income (UBTI)**. Tax-exempt accounts are generally exempt from UBTI, but there's an exception for income from partnerships. **The rule**: If a tax-exempt account generates more than $1,000 of UBTI from PTPs in a year, the account owes **Unrelated Business Income Tax (UBIT)** at trust tax rates (up to 37%). **Practical implication**: Holding large PTP positions in retirement accounts can create unexpected tax bills. Most financial advisors recommend holding PTPs in **taxable accounts**, not IRAs or 401ks, to avoid UBTI complications. ## Section 751 Gain: The Hot Assets Problem When you sell PTP units, a portion of the gain may be classified as **ordinary income** (rather than capital gain) under Section 751 of the Internal Revenue Code: ![The three main tax complications PTP investors face: K-1 reporting, UBTI in retirement accounts, and Section 751 ordinary gain on sale.](data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20600%20211%22%20width%3D%22600%22%20height%3D%22211%22%20role%3D%22img%22%3E%3Ctitle%3EHierarchy%3C%2Ftitle%3E%3Crect%20width%3D%22100%25%22%20height%3D%22100%25%22%20fill%3D%22%23f8fafc%22%2F%3E%3Crect%20x%3D%22220%22%20y%3D%2220%22%20width%3D%22160%22%20height%3D%2258%22%20rx%3D%228%22%20fill%3D%22%232563eb%22%2F%3E%3Ctext%20x%3D%22300%22%20y%3D%2254%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%22700%22%20fill%3D%22white%22%3EPTP%20Tax%20Issues%3C%2Ftext%3E%3Cpath%20d%3D%22M%20300%2078%20L%20300%20105.5%20L%20120%20105.5%20L%20120%20133%22%20stroke%3D%22%23cbd5e1%22%20stroke-width%3D%222%22%20fill%3D%22none%22%2F%3E%3Crect%20x%3D%2240%22%20y%3D%22133%22%20width%3D%22160%22%20height%3D%2258%22%20rx%3D%228%22%20fill%3D%22white%22%20stroke%3D%22%230891b2%22%20stroke-width%3D%222%22%2F%3E%3Ctext%20x%3D%22120%22%20y%3D%22158%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2213%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3EK-1%20Filing%3C%2Ftext%3E%3Ctext%20x%3D%22120%22%20y%3D%22176%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2210%22%20fill%3D%22%2364748b%22%3ELate%2C%20delays%20returns%3C%2Ftext%3E%3Cpath%20d%3D%22M%20300%2078%20L%20300%20105.5%20L%20300%20105.5%20L%20300%20133%22%20stroke%3D%22%23cbd5e1%22%20stroke-width%3D%222%22%20fill%3D%22none%22%2F%3E%3Crect%20x%3D%22220%22%20y%3D%22133%22%20width%3D%22160%22%20height%3D%2258%22%20rx%3D%228%22%20fill%3D%22white%22%20stroke%3D%22%230891b2%22%20stroke-width%3D%222%22%2F%3E%3Ctext%20x%3D%22300%22%20y%3D%22158%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2213%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3EUBTI%20%2F%20UBIT%3C%2Ftext%3E%3Ctext%20x%3D%22300%22%20y%3D%22176%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2210%22%20fill%3D%22%2364748b%22%3EIRA%2F401k%20risk%3C%2Ftext%3E%3Cpath%20d%3D%22M%20300%2078%20L%20300%20105.5%20L%20480%20105.5%20L%20480%20133%22%20stroke%3D%22%23cbd5e1%22%20stroke-width%3D%222%22%20fill%3D%22none%22%2F%3E%3Crect%20x%3D%22400%22%20y%3D%22133%22%20width%3D%22160%22%20height%3D%2258%22%20rx%3D%228%22%20fill%3D%22white%22%20stroke%3D%22%230891b2%22%20stroke-width%3D%222%22%2F%3E%3Ctext%20x%3D%22480%22%20y%3D%22158%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2213%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3ESection%20751%3C%2Ftext%3E%3Ctext%20x%3D%22480%22%20y%3D%22176%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2210%22%20fill%3D%22%2364748b%22%3EOrdinary%20gain%20on%20sale%3C%2Ftext%3E%3C%2Fsvg%3E) *The three main tax complications PTP investors face: K-1 reporting, UBTI in retirement accounts, and Section 751 ordinary gain on sale.* - PTPs typically hold "hot assets", inventory and [accounts receivable](/blog/accounts-receivable) (or their equivalent in energy contexts: commodity inventories, unrealised receivables) - The portion of your sale proceeds attributable to these hot assets is ordinary income - This is disclosed on the K-1 and must be separately reported on your tax return This Section 751 gain calculation is complex and is one reason CPA assistance is recommended for investors with significant PTP positions. ## PTP Performance and Yield PTPs have historically been attractive for income investors due to high distribution yields, often 6–10%. However, distribution sustainability depends on: | Factor | Positive Signal | Warning Sign | |---|---|---| | Distribution coverage ratio | >1.0x (EBITDA/distributions) | <1.0x (paying more than earned) | | Debt-to-EBITDA | <4x | >5x (common in MLPs, watch carefully) | | Contract structure | Fee-based, take-or-pay | Volume-sensitive, commodity-exposed | | Commodity exposure | Fully hedged or fee-based | Unhedged commodity price exposure | The 2015–2016 energy downturn saw numerous MLP distributions cut as leverage was too high and commodity prices collapsed. Fee-based, investment-grade MLPs (like Enterprise Products Partners) maintained distributions; volume-sensitive MLPs did not. ## Conclusion Publicly Traded Partnerships combine the tax efficiency of partnership structures with the trading liquidity of public equity markets, making them appealing income vehicles, particularly in the midstream energy sector. The tax complexity (K-1 schedules, return of capital tracking, Section 751 gain, UBTI in retirement accounts) is real and should not be underestimated. For income-focused investors who are comfortable with the tax administration, high-quality PTPs can be excellent yield vehicles in taxable accounts. Warren at [heywarren.com](https://heywarren.com) helps investors evaluate MLP and PTP distributions, tax efficiency, and midstream energy investment structures. --- ## Related Reading **More from Warren**: - [Section 1231 Gain: What It Is and How It's Taxed](/blog/section-1231-gain) - [NOL Carryforward: How Net Operating Losses Reduce Future Taxes](/blog/nol-carryforward) - [Triple Net Lease (NNN): What It Is and Why Investors Love It](/blog/triple-net-lease) **Authoritative sources**: - [IRS, Master Limited Partnerships](https://www.irs.gov/businesses/partnerships) - [IRS, Unrelated Business Income Tax](https://www.irs.gov/charities-non-profits/unrelated-business-income-tax) - [National Association of Publicly Traded Partnerships](https://www.naptp.org/)