What is qualifying income for MLP?

What Counts as Qualifying Income for MLPs?

When it comes to Master Limited Partnerships (MLPs), one of the most critical aspects determining their tax status is what’s known as qualifying income. For an MLP to maintain its favorable structure—specifically, to be taxed as a partnership rather than a corporation—federal tax rules require that at least 90% of its annual gross income comes from sources classified as “qualifying.”

This rule stems from Section 7704 of the Internal Revenue Code, which allows certain publicly traded partnerships to avoid corporate taxation—provided they meet this qualifying income threshold. So, what counts? Primarily, income tied to natural resources and commodities. This includes revenues from the exploration, development, mining, or production of oil, gas, minerals, and other fossil fuels. It also covers transportation, processing, storage, and marketing of these products.

For example, if an MLP operates pipelines that transport crude oil or natural gas, the fees collected from those services qualify. Likewise, income from gathering and compressing gas or storing petroleum products counts toward the requirement. These activities are central to the energy infrastructure sector, which makes up the bulk of MLPs today.

However, not all income qualifies. Revenue from financial services, real estate, or most manufacturing activities generally falls outside the definition. This constraint shapes how MLPs structure their businesses—keeping them focused on core resource-related operations.

Investors in MLPs pay close attention to qualifying income because it directly affects tax compliance and, by extension, distributions. If an MLP fails to meet the 90% threshold, it risks losing its pass-through status, which could lead to corporate-level taxation and significantly reduce payouts to investors.

As a result, MLPs are meticulous in structuring operations and reporting to ensure compliance. The certainty of qualifying income isn’t just a technical detail—it’s the foundation of the MLP model.