What Is a Working Interest in Oil and Gas?

Working Interest Defined

A working interest is an ownership stake in an oil and gas lease that entitles you to a share of production revenue and obligates you to pay a proportional share of drilling and operating costs. It's the most direct form of oil and gas investment.

When you hold a working interest, you get a share of every barrel produced, responsibility for your portion of lease operating expenses, and access to every tax deduction available to oil and gas investors — IDCs, depletion, depreciation, and the Section 469 active income exception.

Working Interest vs. Royalty Interest

A royalty interest is simpler. Royalty holders receive 12.5-25% of gross production revenue with zero cost exposure. But also far fewer tax benefits.

A royalty holder gets clean revenue but can only claim cost depletion (limited to original cost basis) and has passive income treatment. A working interest holder bears costs but gets IDC deductions (60-85% in year one), percentage depletion (15% of gross revenue under IRC Section 613 with no basis limit), equipment depreciation, and active income treatment that lets losses offset W-2 wages.

How Net Revenue Interest Works

Your cash flow is based on your Net Revenue Interest (NRI), not just your working interest. NRI = Working Interest × (1 - Royalty Burden). Example: 10% WI on a lease with 20% royalty burden gives you 8% NRI. If the well produces $100,000 in revenue, you receive $8,000 before operating expenses.

The Section 469 Exception

Under IRC Section 469(c)(3), a working interest in oil and gas that is NOT held through a limited partnership is automatically treated as active — regardless of whether you materially participate in operations. IDC deductions from a working interest investment offset W-2 income dollar for dollar. No passive activity limitations. No material participation tests.

This exception doesn't apply to royalty interests, limited partnership interests, or any other investment structure. It's unique to working interest.

Cost Bearing and Cash Flow

As a working interest holder, you pay your proportional share of lease operating expenses: pumping, chemical treatment, well maintenance, water disposal, gathering fees, and compression. Typical LOE runs $5-$15 per BOE for conventional wells.

Monthly distribution = (Gross Revenue × NRI) - (Operating Costs × WI) - Severance Tax. For a well producing 30 BOPD at $75/barrel with $10/BOE LOE and 10% WI, that's roughly $4,050 per month.

Your Next Step

If you are evaluating working interest opportunities, start by requesting the Authority for Expenditure (AFE) from the operator. This document breaks down projected drilling costs, your share of expenses, and the expected timeline to first production.

Compare the AFE against your tax advisor's estimate of your deductible portion before committing capital. The IDC ratio alone will tell you a lot about the quality of the program.