Net Royalty Acres (NRA): The Metric Mineral Buyers Trade On

Why every offer eventually gets quoted in NRA

Two mineral packages cross your desk in the same week. Both are 40 net mineral acres in the same county, same depth, same operator. One is leased at a 1/8 royalty. The other is leased at 3/16. They look identical on a net-mineral-acre basis, but the second one pays you 50 percent more on every barrel. If you price them the same per acre, you have either overpaid for the first or stolen the second. Net mineral acres alone cannot tell the two apart.

That is the problem net royalty acres exist to solve. An NRA restates a position in terms of a single, fixed royalty so that every deal is measured on the same yardstick. Once both packages are expressed in NRA, the royalty difference is already baked into the number, and a single price per unit lets you compare them honestly. This is why, at the negotiating table, sellers and buyers stop quoting dollars per acre and start quoting dollars per NRA.

Net royalty acres normalize a position to a standard royalty so deals are comparable on a like-for-like basis. That is the entire job of the metric. It is not a different asset, a different deed, or a different interest type. It is the same minerals viewed through a lens that strips out the one variable, royalty rate, that otherwise makes two packages impossible to compare at a glance.

If you only learn one valuation concept on the buy side of minerals and royalties, this is the one. Net mineral acres tell you how much rock you control. Net revenue interest tells you the exact decimal that hits your check. Net royalty acres sit between them as the trading unit, the number both sides actually negotiate, and the denominator under almost every comp you will ever pull.

The definition and the 1/8 standardization

A net royalty acre is one net mineral acre standardized to a 1/8 (12.5 percent) royalty. The 1/8 figure is not arbitrary. For most of the twentieth century, 1/8 was the customary lease royalty across the United States, so the industry built its royalty-acre math on that baseline. Under that convention, one net mineral acre leased at exactly 1/8 equals one net royalty acre, and a full net mineral acre is treated as containing eight royalty acres of one-eighth each.

Because the baseline is fixed at 0.125, any other royalty scales off it. A 1/8 lease yields 1 NRA per NMA. A 3/16 (18.75 percent) lease yields 1.5 NRA per NMA. A 1/4 (25 percent) lease yields 2 NRA per NMA. The higher your negotiated royalty, the more royalty acres a single mineral acre represents, which is exactly the intuition you want: a richer royalty is worth more, and the NRA count rises to reflect it.

For leased minerals, you use the actual royalty stated in the lease. For unleased minerals, there is no contractual royalty to plug in yet, so buyers substitute a going-market royalty assumption for the area, often the prevailing 3/16 or 1/4 that new leases in the play are signing at. State that assumption out loud in your underwriting, because it directly drives the NRA count and therefore the price. Two buyers using different market-royalty assumptions on the same unleased tract will land on different NRA totals.

Confirm the convention before you trade, because the word can be defined two ways in the wild. Some shops normalize everything back to the 1/8 baseline, the historical and most common usage covered here. Others define NRA against a 100 percent (8/8) basis, where an NRA equals NMA times the actual royalty decimal. Same minerals, very different unit counts and therefore very different per-unit prices. When a purchase and sale agreement says NRA, make sure both sides mean the same thing in writing.

The formula, and how it differs from NMA and NRI

The formula is short, and the way most buyers write it is NRA = (RI / 0.125) x acres — the royalty interest divided by the one-eighth baseline, times the net mineral acres you own. When you are working from raw inputs rather than a net figure, expand it to NRA = ((MI x lease royalty) / 0.125) x acres, where MI is your mineral-interest fraction and acres is the gross tract acreage. Your mineral interest times gross acres is simply your net mineral acres, so the two forms are the same calculation written from different starting points. And dividing the royalty by 0.125 is the same as multiplying by 8, so you will also see it as NRA = NMA x royalty x 8. Use whichever form matches the inputs in front of you; the divide-by-0.125 version makes the one-eighth standardization explicit, which reads most clearly in an underwriting model.

Net mineral acres is the input, not a competitor to NRA. NMA is your ownership fraction times the gross acreage of the tract. It answers how much of the mineral estate you hold, in acres, and it ignores royalty entirely. A 40 NMA position is 40 NMA whether it is unleased or leased at 1/8 or 1/4. That royalty-blindness is exactly why NMA cannot price a deal on its own, and why you convert to NRA before comparing.

Net revenue interest is the output on the other side and a different animal. NRI is the decimal share of production revenue that actually reaches you, after your acreage share of the unit, the royalty, and any burdens. NRI is what the operator uses to cut your check. NRA, by contrast, is a normalized acreage count used to value and trade the position. NRI prices the cash flow; NRA prices the acres in comparable terms. Do not multiply one by the other expecting a dollar figure.

Hold the three apart and the workflow is clean. NMA establishes what is owned. You convert NMA to NRA to make the package comparable to every other package in your comp set. You compute NRI separately to model the cash flow and feed a discounted-value cross-check. Conflating NMA with NRI is the classic way to overpay; conflating either with NRA is how you misquote the deal to the seller.

A worked example, start to finish

Take 40 net mineral acres leased at a 3/16 royalty. The royalty decimal is 0.1875. Run the formula: NRA = 40 x (0.1875 / 0.125) = 40 x 1.5 = 60 net royalty acres. The 3/16 lease converts every mineral acre into 1.5 royalty acres, so 40 NMA becomes 60 NRA. That single number is now directly comparable to any other NRA-quoted position in the county, regardless of its underlying royalty.

Now contrast it with a 40 NMA neighbor leased at a 1/8 royalty. There, NRA = 40 x (0.125 / 0.125) = 40 x 1 = 40 NRA. Same acreage, same rock, but only two-thirds the royalty acres, because its royalty is two-thirds the size. If a seller tried to price both at the same dollars per acre, the 3/16 package would be badly underpriced. Converting both to NRA exposes the gap before money changes hands.

Run it once more at 1/4 to lock in the pattern. 40 NMA at a 0.25 royalty gives NRA = 40 x (0.25 / 0.125) = 40 x 2 = 80 NRA. As royalty climbs from 1/8 to 3/16 to 1/4, the same 40 NMA scales from 40 to 60 to 80 NRA. The NRA count is doing the work of carrying the royalty difference so your price per unit does not have to.

Reverse the math when you receive a dollars-per-acre offer and want the real comp. Suppose someone offers $6,000 per net mineral acre on a 40 NMA tract leased at 1/4. That is $240,000 total. Divide by the 80 NRA and you are paying $3,000 per NRA. Quote that, not the $6,000 per NMA, because $/NRA is the number your comp sheet and your competitors are using.

What $/NRA actually runs in 2026

Price per NRA splits hard by production status, and the three buckets behave like three different markets. Producing minerals carry the highest values because the cash flow is already proven and in pay. Leased-but-non-producing minerals sit lower, since you are paying for a lease, a location, and a probability rather than a check. Non-producing, unleased minerals are the most speculative and trade lowest, often priced as raw upside until a permit or a lease shows up.

In the Permian through 2026, premium producing positions in the core Delaware and Midland basins have been quoted in roughly the $10,000 to $25,000 per NRA range in the strongest locations, with proximity to active rigs and nearby drilled-but-uncompleted wells driving the top of that band. Move off the core, or into thinner inventory, and producing $/NRA falls well below those headline numbers. Treat the high end as core-of-core, not as a county-wide average.

Leased-non-producing minerals trade at a discount to producing because the buyer is underwriting timing and execution risk, not collecting a current royalty. Non-producing, unleased parcels can run an order of magnitude cheaper, sometimes only hundreds of dollars per acre where no reserves are proven, because the entire value is optionality. The wider commodity backdrop matters here too: oil has been elevated but volatile through 2026 — WTI trading in the $90s on the Strait of Hormuz supply disruption after an April spike — and because buyers underwrite minerals on the forward strip (which sits well below the wartime spot), that uncertainty tends to keep offers disciplined rather than chasing the peak.

Use published ranges as guardrails, never as your offer. Actual $/NRA turns on reservoir quality, operator, working-interest activity around the tract, lease terms, and how competitive the specific process is. Two tracts a mile apart can clear at very different $/NRA because one sits under an active development unit and the other does not. The metric standardizes royalty; it does not standardize geology, and the geology is still where most of the spread lives.

Building an offer from $/NRA

A buy-side offer assembled from $/NRA runs in a fixed order. Establish NMA from the title or ownership report. Determine the royalty, the actual lease rate if leased or a stated market assumption if not. Convert to NRA with the formula. Pull a $/NRA range from recent comparable sales filtered to the same production status and area. Multiply your supportable $/NRA by the NRA count to get the headline number, then sanity-check it against a discounted-cash-flow view built off the NRI.

Walk the earlier example through it. The 40 NMA at 3/16 converts to 60 NRA. If your comps support $4,000 per NRA for leased-non-producing acreage in that area, the indicated value is 60 x $4,000 = $240,000. That is your starting point, not your ceiling. You then haircut or lift it for title risk, lease expiry exposure, operator quality, and how many other bidders are circling, before it becomes a number you actually put in front of a seller.

Keep both quotes ready, because sellers think in dollars per acre and buyers think in dollars per NRA. On the same deal, $240,000 is $6,000 per NMA and $4,000 per NRA. Neither is wrong; they are the same money expressed against different denominators. The discipline is knowing which one you are quoting, and never accidentally comparing a $/NMA figure from one deal against a $/NRA figure from another, which silently mixes royalty rates back into the comparison you worked to remove.

The biggest valuation mistakes here are not arithmetic, they are definitional. A 1/8-basis NRA and an 8/8-basis NRA describe the same minerals with different unit counts, so a price quoted against one is meaningless against the other. Pin the convention in the purchase and sale agreement, document your market-royalty assumption on any unleased acreage, and make sure the NRA count in your model is the one both sides agreed to before you ever discuss price.

Carrying NRA on the deal record

NRA is only useful if it lives on the record next to the rest of the deal, not in a one-off spreadsheet cell that gets lost between the offer and the closing. The position changes shape as it moves: the title report sets NMA, the executed lease sets the royalty, and the moment you finalize both you should lock the NRA count and the $/NRA you underwrote. If those numbers are not pinned to the deal, the next person to touch it re-derives them from memory and the basis quietly drifts.

In Scout, net royalty acres and price per NRA are fields on the deal record, captured per deal alongside NMA, royalty, owner, and the four-stage pipeline from Under Negotiation through PSA Sent, Signed, and Closed. Storing $/NRA on the record means your comps are always pulled from your own closed deals on a like-for-like basis, rather than reconstructed after the fact, and it keeps the trading number, not just the raw acreage, visible to whoever picks the deal up next.

Whether you track it in Scout or anywhere else, the rule is the same: write the convention down, store the NRA count and $/NRA on the deal, and never let a dollars-per-acre figure stand in for a dollars-per-NRA comp. Net royalty acres do one thing exceptionally well, they make different deals comparable, and they only do it if the standardized number is the one you actually keep and quote.