It usually happens in October. You go to the mailbox, expecting the usual stack of bills and flyers, and you find a property tax statement.
If you own a home, you’re used to this. But then you look closer. The legal description doesn’t match your street address. It looks like a code—a string of numbers, maybe a well name like “Viper Unit 1H” or something equally industrial. The amount might be small, fifty bucks here, or it might be thousands.
This is the moment many Texas landowners realize that “free” money from mineral royalties isn’t actually free.
At Double Fraction, we talk to families every day who are confused by these bills. They assume that because the oil company sends them a check, the oil company handles the taxes. Or they assume that because they haven’t drilled a well themselves, they don’t own “property” in the traditional sense.
The reality is messier. Texas tax law treats the oil and gas under your feet exactly the same as a barn, a house, or a commercial building. It is real estate. And in Texas, if it’s real estate, the tax assessor wants their share.
We aren’t CPAs, and this isn’t official tax advice. We are mineral buyers who have seen thousands of these tax bills and heard the frustration from owners trying to make sense of the math. Let’s walk through exactly what you are paying, why you are paying it, and the specific laws that grant the state the right to send you that bill.
The Two Types of Texas Taxes
When you own producing minerals, you get hit from two directions. There is the tax you see, and the tax you don’t usually notice because it’s taken out before you even get paid.
The visible one—the bill in your mailbox—is the Ad Valorem Tax (property tax). The invisible one is the Severance Tax.
Let’s start with the one that shows up in your mailbox.
Ad Valorem Taxes: Paying Rent on What You Own
“Ad Valorem” is just Latin for “according to value.” This is your standard property tax.
In Texas, mineral interests are classified as real property. The Texas Property Tax Code is very clear on this. Even though you can’t walk inside your mineral rights or paint them, they are an asset with a distinct value, separate from the surface land.
Here is where it gets confusing for landowners, especially in places like Tarrant County where urban drilling is common. You might own the house and the minerals, but the county views them as two completely separate accounts.
- Account A: Your house and the land it sits on.
- Account B: Your fractional interest in the oil and gas produced from a unit that might be two miles away.
The Tarrant Appraisal District notes that thousands of homeowners own tiny interests in gas units developed under residential neighborhoods. You get a tax bill for the house, and a separate tax bill for the gas.
How Do They Determine the Value?
This is the most controversial part of mineral ownership. How does the county know what your oil rights are worth on January 1st? They can’t see underground any better than you can.
Counties contract with specialized appraisal firms—Pritchard & Abbott is a big one you’ll see often—to do the math. They don’t look at what you did get paid; they guess what you will get paid.
They analyze the decline curve of the well (how fast production is dropping), the current price of oil or gas, and the estimated remaining life of the reservoir. They mash that into a formula to come up with a “Present Value.”
That is the number on your tax bill.
Here is the kicker: The appraisal date is always January 1st.
If oil prices are sky-high on January 1st, your property value is set high. If the market crashes in July, it doesn’t matter. You are still paying taxes based on that January 1st value. We have seen situations where an owner’s tax bill was almost as high as their royalty checks for the year because the market tanked halfway through, but the tax assessment was locked in at the peak.
The “Invisible” Severance Tax
While you are stressing over the county tax bill, the State of Texas has already taken a cut. This is the :Severance Tax.
The logic is simple: you are “severing” a natural resource from the earth. Once it’s gone, it’s gone. The state charges a tax for that permanent removal.
You rarely write a check for this. The operator (the oil company drilling the well) typically pays this tax directly to the Texas Comptroller and deducts your share from your royalty check. If you look closely at your pay stub (the revenue statement), you will often see a column labeled “Sev Tax” or “State Tax.”
Current rates in Texas generally run:
- Gas: 7.5% of market value
- Oil: 4.6% of market value
There are exemptions. The Texas Legislature uses tax breaks to incentivize certain behaviors—like reactivating old wells or using enhanced recovery techniques—but for a standard new well, you should expect roughly those percentages to disappear from your gross pay before the money hits your bank account.
Why You Might Get Four Bills for One Well
One of the most frustrating phone calls we get is from an owner holding a stack of envelopes. “I only own one property,” they say. “Why do I have tax bills from the county, the city, the school district, and the hospital district?”
It comes down to boundaries.
Oil and gas reservoirs don’t respect lines on a map. A single well, especially horizontal wells that can stretch for miles, often crosses through multiple jurisdictions.
This is often due to :Pooling. To drill a viable well, an operator lumps together (“pools”) leases from many different landowners to create a drilling unit. That unit might sit 40% in Fort Worth ISD and 60% in Birdville ISD.
If you own a piece of that unit, you technically own property in both districts. You aren’t getting double-taxed on the whole amount; the value is prorated. They split your value based on where the unit sits.
So, instead of one simple bill for $1,000, you might get:
- A bill for $400 from School District A.
- A bill for $600 from School District B.
- A bill from the City.
- A bill from the County College District.
It is a paperwork nightmare. We know families who spend hours every January just sorting these stacks to make sure they aren’t missing a $12 payment that could result in penalties.
When Do You Actually Owe Taxes?
There is a common misconception that simply owning mineral rights generates a tax bill. That isn’t true.
In Texas, non-producing minerals generally have no taxable value. If there is no well, and no active production, the county usually assigns a $0 value to the minerals. You can sit on non-producing minerals for fifty years and never pay a dime in property tax.
The tax man only shows up once the drill bit hits paydirt.
According to Tarrant County tax guidance, mineral interests become taxable on January 1 of the year following first production.
- Scenario: A well starts producing in June 2024.
- Assessment: The county assesses value on January 1, 2025.
- Bill Mailed: You receive the bill around October 2025.
- Due Date: You must pay by January 31, 2026.
This lag time catches people off guard. You might receive royalties for a year and think you’re in the clear, spending that money on a new truck or home repairs. Then, 18 months after the well started, a tax bill lands on the kitchen table.
Federal Income Taxes: The Final Layer
We have covered the county and the state. We can’t forget the IRS.
Mineral royalties are considered ordinary income. They are taxed at your marginal tax rate, just like wages from a job. If you have a particularly good year with a big “flush” check (that first big check from a new well), it can bump you into a higher tax bracket.
However, there is one major tax advantage mineral owners have: Depletion.
Since oil and gas are finite resources, the IRS allows you to deduct a percentage of your income to account for the fact that your asset is being used up. For most small royalty owners, this is Percentage Depletion, which is currently a 15% deduction from your gross mineral income.
That means if you make $10,000 in royalties, you might only pay federal taxes on $8,500 of it. It’s a significant benefit, but you have to know to ask your accountant for it. Many general-purpose tax preparers miss this if they aren’t used to oil and gas returns.
The Hidden Cost of Ownership
We lay all this out not to scare you, but to validate what you’re feeling. Managing mineral rights is work.
There is a romantic idea of the “mailbox money” lifestyle—just walking to the mailbox and collecting checks. The reality involves cross-referencing Revenue District codes, protesting appraisals if they come in too high, and writing checks back to the county every January.
For large estates with millions in production, this is just the cost of doing business. They hire landmen and tax attorneys to handle it.
But for a family that inherited a small interest—maybe resulting in $5,000 or $10,000 a year—the administrative burden can feel heavy. We see many owners who essentially lose one or two months of royalty income straight to property taxes. When you add the time spent managing the paperwork and the accountant fees to file the Schedule E on your federal return, the “net” profit shrinks further.
Is It Worth the Hassle?
This brings us to the conversation we often have with families. Owning minerals is an investment. Like a rental property, it has income, but it also has maintenance costs (taxes and administration).
You have to look at the Net Effective Yield.
If your royalties pay you $10,000, but you pay:
- $460 in Severance Tax (deducted automatically)
- $2,500 in Ad Valorem (Property) Tax
- $1,800 in Federal Income Tax
- $300 in extra accounting fees
You aren’t making $10,000. You are keeping roughly $4,940.
For some families, that $4,940 is absolutely worth it. It’s money that stays in the family. For others, the stress of dealing with appraisal districts and the unpredictability of tax rates makes it a headache they’d rather not have.
When you sell mineral rights, you are essentially trading that future uncertain income (and the certain tax burden) for a lump sum today. The tax obligation for the minerals transfers to the buyer. We become the ones who have to argue with the appraisal district and write the checks to the school board.
What Should You Do Now?
If you are holding on to your minerals, the best thing you can do is get organized.
- Check your Appraisal District: Go to the website of the county where your minerals are located (e.g., TAD.org for Tarrant). Search your name. Make sure they have your current address. If the tax bill goes to an old address and you miss it, the penalties and interest accrue fast.
- Watch the Mail in May: That is usually when Notices of Appraised Value go out. If the county says your minerals are worth double what you think they are, you usually only have 30 days to file a protest.
- Save Your Check Stubs: You need these to prove to the appraisal district that production dropped or prices were lower than they estimated.
If the paperwork is piling up, or if you just want to know what your net position looks like, we are here to chat. We can help you look at your tax appraisal versus the actual market value of your minerals. Sometimes the county undervalues them, and you’re getting a deal. Sometimes they overvalue them, and you’re bleeding cash.
Knowing the difference is the first step to peace of mind.
:ad-valorem-tax
This is the fancy legal term for property tax. It literally means “according to value.” In Texas, minerals are taxed just like real estate. The county appraises the value of the oil and gas in the ground (your “reserve”) and taxes you on that amount annually.
:severance-tax
A state tax charged for the removal of natural resources from the earth. Unlike property tax, which you pay by check, severance tax is usually deducted directly from your royalty revenue by the oil operator before you receive your payment. It’s the “price of admission” for extracting Texas resources.
:pooling
The practice of combining small tracts of land from different owners to create a single drilling unit large enough to satisfy state regulations. If your land is “pooled” into a unit, you receive a percentage of royalties based on your acreage’s contribution to the total pool, even if the wellbore doesn’t physically touch your specific plot of soil.