Post-production deductions, gathering, transportation, processing, compression, are subtracted between gross and net depending on your specific lease terms. The gap is normal, but it should stay roughly proportional month to month, not widen unexplained.
Reading Your Royalty Statements
Twelve months of royalty statements sitting in a drawer already have most of what a valuation needs, if you know which lines to pull.
Most owners glance at the net amount on a royalty check and file the stub away. That's understandable, the statements are dense and the layout varies by operator, but the columns you're skipping past are exactly what feeds a valuation. Gross value, deductions, net decimal, and volume, pulled across twelve consecutive months, are the raw material for almost any credible number someone quotes you.
This walks through what each line actually means and what it's doing in the math behind an offer.
Gross Value vs. Net Value: Two Different Numbers
Gross value is the total value of your share of production before any deductions come out. Net value, sometimes labeled net check or net payable, is what actually lands in your account after post-production costs, gathering, compression, transportation, processing, are subtracted depending on your lease terms. A valuation should be built off net, since that's the actual cash stream a buyer is purchasing, but the gap between the two lines tells you something too, a wide and growing deduction line can mean rising midstream costs are eating into your share faster than production is declining.
If your statement only shows one number, ask the operator for a detailed statement. Most operators will provide one on request, and it's worth having for any valuation conversation, formal or otherwise.
Decimal Interest: The Number That Multiplies Everything
Your decimal interest, usually a long string like 0.00187500, is the fraction of the well's total production your interest represents. It's the single most important number on the page because every dollar of gross value gets multiplied by it before anything else happens. A small change in decimal, from a title correction, a pooling adjustment, or an heirship resolution, changes every future check by that same proportion.
If your decimal has changed between statements without an explanation you understand, that's worth a call to the operator's owner relations line before you value anything, since a valuation built on a stale decimal will be wrong in either direction.
Volume and Price: Separating the Two Drivers of a Swing
When a check jumps or drops month to month, the statement usually breaks out whether it's a volume change, more or less oil and gas actually produced, or a price change, the market price the operator realized that month. Volume swings tell you something about the well itself, decline, downtime, a new well coming online in the unit. Price swings tell you about the commodity market and don't say much about the well's underlying health.
A valuation should filter out short-term price noise and focus on the volume trend, since price at the moment of sale is a market condition, not a property characteristic, and it will have moved again by the time any transaction closes.
Building a Twelve-Month Trend From What You Already Have
Line up twelve consecutive months of net value, or annualize what you have if your history is shorter, and you've built the base input for a desk valuation before anyone else runs a single calculation. Note any month with an unusual spike or gap, a new well online, a shut-in period, a decimal correction, since those months need context rather than being averaged in blind.
This is also the fastest way to catch an error before it costs you. Owners who never look past the net-amount line sometimes miss decimal mistakes or missing wells for months at a time, and those get harder to correct the longer they sit.
Reading Deduction Codes Without Calling the Operator
Most operator statements use abbreviated codes for deduction line items, GT for gathering and transportation, COMP for compression, PROC for processing, and these vary somewhat by operator rather than following one universal standard. Many operators publish a code legend on the back of the statement or in the owner portal, and pulling that reference once saves having to call owner relations every time an unfamiliar code shows up.
If a new deduction code appears on a statement that wasn't there before, it's worth a quick call to confirm what changed, since a new midstream contract or a change in gathering arrangement can add a deduction category that wasn't present on earlier statements without necessarily meaning anything is wrong.
Valuation Questions Owners Commonly Ask
These questions separate supported valuation inputs from estimates that still require a statement, deed, lease, order, or production record.
Why don't gross value and net value match?
What if your statements don't show a decimal interest?
Request a detailed statement from the operator's owner relations department. Most will provide the full breakdown on request, and it's worth having on hand for any valuation or offer review.
How many months of statements do you need for a valuation?
Twelve consecutive months is the standard base, since it smooths seasonal and price noise. Shorter history can still be worked with, annualized and flagged, but twelve months gives a cleaner trend.
Your check dropped sharply. Does that mean your interest is worth less now?
Possibly, but check whether it's a volume drop, decline, downtime, a price drop, or a decimal change before assuming the underlying asset lost value. Each of those has a different implication for what a buyer would offer.
Can you send statements directly for a valuation?
Yes, that's typically the fastest starting point. Twelve months of statements plus the well or lease name lets a desk valuation begin without waiting on additional paperwork.
Reconcile the next valuation input
Carry the same source records and assumptions into these related workpapers so the range remains reviewable.
Division Orders Explained
A division order sets the decimal interest your royalty checks are based on. Here's how to read one, what to check before signing, and why it matters for value.
Read the guideDocuments You Need to Sell
The records that actually move a mineral rights valuation and sale forward: deeds, division orders, statements, and probate paperwork if it applies to you.
Read the guideHow to Spot a Lowball Offer
An unsolicited mineral rights offer can be reasonable or a fraction of fair value. Run the implied-multiple test before signing anything back.
Read the guideReady to place this interest on a reviewable valuation workpaper?
Share the county and state, record-owner name, operator or payor, recent statements, deed or lease if available, and the decision the valuation should support.