Net Royalty Acre (NRA)
A net mineral acre normalized to a standard 1/8 royalty, letting buyers compare positions with different lease royalty rates.
A net royalty acre, or NRA, restates a mineral position in terms of royalty rather than raw acreage. It normalizes a net mineral acre to a standard 1/8 (12.5%) royalty. One NMA leased at the traditional 1/8 royalty equals one NRA; the same NMA leased at 1/4 equals two NRAs, because the royalty stream is twice as large.
The point is comparability. Two tracts with the same NMA can carry very different income if their lease royalties differ. Quoting deals in NRA puts them on equal footing, which is why royalty buyers often price in dollars per net royalty acre.
To convert: NRA = NMA × (lease royalty ÷ 1/8). Both units show up in offers, so know which one a buyer is using. See how royalties work for the mechanics.