When does EPD release its K-1?

Enterprise Products Partners (EPD) released 2025 K-1 tax packages online on March 3, 2026. Download at taxpackagesupport.com/enterprise or call (800) 599-9985. EPD is a single-entity K-1 — simpler than Energy Transfer’s three-partnership package.

When does Energy Transfer release its K-1?

Energy Transfer has confirmed that 2025 K-1 tax packages will be available online at taxpackagesupport.com/et starting March 16, 2026. Mailed packages will follow between March 18–31, 2026. The ET K-1 package contains three separate partnership schedules (ET, USAC, and SUN) — each must be entered separately in your tax software.

Where do I download my MLP K-1?

Most major MLPs provide K-1 downloads through Tax Package Support (taxpackagesupport.com). Each MLP has its own page — for example, taxpackagesupport.com/enterprise for EPD, taxpackagesupport.com/et for Energy Transfer. You’ll need your SSN and the MLP’s EIN to register.

What do I do if my K-1 hasn’t arrived by April?

File Form 4868 for an automatic six-month extension, pushing your deadline to October 15, 2026. The extension is automatic — you don’t need a reason. Note: the extension is for filing, not for paying. If you owe tax, estimate and pay by April 15 to avoid interest.

Why is my broker’s cost basis different from my K-1?

Your broker tracks your original purchase price but never sees your K-1. Each year, K-1 items — distributions, income allocations, liability changes — adjust your cost basis. After 5 years, your broker’s basis can be off by 30–50%. Use the free K-1 Basis Tracker to calculate your real IRS-adjusted basis.

Do I need to file state taxes because I own an MLP?

Possibly. MLPs operate in multiple states, and your K-1 includes state-by-state income allocations. Most small unitholders file in their home state plus 0–3 additional states. The year you sell is when state filing expands significantly.

2025 K-1 Release Dates for Every Major MLP

Complete schedule of K-1 online availability and mail dates for the 2026 tax season. Updated as partnerships confirm dates.

By Lucas Andersen — Last updated March 6, 2026

Most major MLP K-1 tax packages for the 2025 tax year are released between late February and mid-March 2026. As of March 6, 2026, EPD, PAA, CQP, and MMLP have released their K-1s. ET and MPLX are expected mid-March. The table below tracks every major MLP with live status updates.

2025 K-1 Release Schedule

Pending — USA Compression (USAC): Expected late Feb–early March 2026 • taxpackagesupport.com/usac • 855-521-8151
Released — Martin Midstream (MMLP): February 27, 2026 • taxpackagesupport.com/martinmidstream • 888-334-7473
Released — Plains All American (PAA): February 28, 2026 • taxpackagesupport.com/plainsallamerican • 866-872-2829
Released — Enterprise Products (EPD): March 3, 2026 • taxpackagesupport.com/enterprise • 800-599-9985
Released — Cheniere Energy Partners (CQP): March 6, 2026 • taxpackagesupport.com/cheniere • 866-709-8182
Pending — Western Midstream (WES): Expected late Feb–early March 2026
Pending — Black Stone Minerals (BSM): Expected early–mid March 2026
Pending — Antero Midstream (AM): Expected early–mid March 2026
Pending — MPLX LP (MPLX): Expected mid March 2026 • taxpackagesupport.com/mplx • 800-232-0011
Pending — Natural Resource Partners (NRP): Expected mid March 2026
Pending — Energy Transfer (ET): March 16, 2026 (confirmed) • taxpackagesupport.com/et • 800-617-7736 — contains 3 K-1s (ET, USAC, SUN)
Pending — Sunoco LP (SUN): Expected mid–late March 2026

Magellan Midstream (MMP): Acquired by ONEOK in 2023, converted to C-corp. No K-1 issued for 2025. Former MMP holders receive ONEOK 1099-DIV instead.

Targa Resources (TRGP): Converted to C-corp in 2024. Now issues 1099, not K-1.

About Schedule K-3

Several MLPs now also issue Schedule K-3 (Partner’s Share of Income from International Transactions). K-3s are typically available later — often May or June. For most domestic individual investors, the K-3 information is either already reported on your K-1 or doesn’t apply to you.

What to Do Once Your K-1 Arrives

Your broker’s cost basis is almost certainly wrong for your MLP position — here’s why. Verify your K-1 data, update your basis calculation, check state filing requirements, and enter the K-1 into your tax software.

Use the free K-1 Basis Tracker to calculate your real IRS-adjusted cost basis. Need help reading your K-1? See the line-by-line worksheet guide.

What If Your K-1 Is Late?

K-1s can arrive as late as mid-March or later. File Form 4868 for an automatic six-month extension (until October 15, 2026). See the full filing extension guide.

MLP K-1 Guides

Enterprise Products (EPD) K-1 Guide — The most widely held MLP
Energy Transfer (ET) K-1 Guide — 3 partnerships in one K-1
MPLX K-1 Guide — Marathon’s high-yield MLP
CQP K-1 Guide — Cheniere LNG partnership
PAA K-1 Guide — Plains All American
WES K-1 Guide — Occidental’s MLP

Tax Resources

Why Your Broker’s Cost Basis Is Wrong
Section 751 Recapture — The tax surprise when you sell
MLP State Filing Requirements
K-1 Basis Worksheet Explained — Line-by-line IRS worksheet
Filing Extension Guide — How to file Form 4868
K-1 Basis Tracker — Free IRS worksheet calculator