Net Revenue Interest (NRI) Explained — Calculator & Examples

March 5, 2026 • 7 min read

Net revenue interest (NRI) is the decimal share of production revenue that a particular party receives. Understanding NRI is essential for landmen calculating division orders, mineral owners verifying royalty payments, and anyone evaluating oil and gas economics. Here is how NRI works, with real calculation examples.

What is Net Revenue Interest?

NRI represents the percentage of gross production revenue that flows to a specific interest owner after all burdens (royalties, overriding royalties, etc.) are deducted. The key distinction:

• Working interest (WI) — The share of costs and revenues associated with operating the well. The working interest owner pays for drilling and operating expenses.
• Net revenue interest (NRI) — The working interest minus all royalty and overriding royalty burdens. This is the actual share of revenue the working interest owner keeps.
• Royalty interest — A share of production revenue free of operating costs. The mineral owner's royalty is an NRI from day one.

Basic NRI Calculation

The formula for a working interest owner's NRI:

Example 1: Simple Case

Operator owns 100% working interest. The lease has a 25% royalty.

• NRI = 1.00 x (1 - 0.25) = 0.75 or 75%
• The operator receives 75% of revenue and pays 100% of costs
• The mineral owner receives 25% of revenue and pays nothing

Example 2: Overriding Royalty

Same lease, but the operator carved out a 3% overriding royalty interest (ORRI) to the landman who brokered the lease.

• Royalty burden = 25% (lessor royalty) + 3% (ORRI) = 28%
• Operator NRI = 1.00 x (1 - 0.28) = 0.72 or 72%
• Mineral owner NRI = 0.25 (unchanged)
• Landman ORRI NRI = 0.03

Example 3: Partial Working Interest

Operator owns 50% working interest in a well with a 25% royalty and 2% ORRI.

• Operator NRI = 0.50 x (1 - 0.27) = 0.365 or 36.5%
• The other 50% WI owner has a separate NRI calculation based on their burden

NRI for Mineral Owners

Mineral owners calculate their NRI based on their ownership fraction and royalty rate:

If you own 1/4 of the minerals and your lease has a 25% royalty:

• NRI = 0.25 x 0.25 = 0.0625 or 6.25%
• You receive 6.25% of the gross production revenue from the well

NRI in Pooled Units

When a tract is pooled into a larger drilling unit, the mineral owner's NRI is further adjusted by their tract's share of the unit:

If you own 1/4 minerals on a 160-acre tract pooled into a 640-acre unit with a 25% royalty:

• NRI = 0.25 x 0.25 x (160/640) = 0.015625 or 1.5625%

Common NRI Mistakes

• Forgetting overriding royalties — ORRIs reduce the working interest owner's NRI but not the lessor royalty
• Not accounting for pooling — The tract-to-unit ratio significantly affects the NRI
• Confusing NRI with WI — They are not the same thing. NRI is always less than or equal to WI for the operator.
• Decimal rounding — NRI calculations often produce long decimals. Carry at least 8 decimal places through your calculations before rounding the final result.

Use MineralSearch's NRI calculator tool to quickly compute net revenue interests for any ownership scenario.