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Sell mineral rights in Illinois
Last reviewed June 2026
Illinois produced about 7 million barrels of crude oil in 2025, so there is genuine buyer demand and a wide gap between the first letter in the mail and the real number. If you want to sell mineral rights in Illinois, competition is how you close that gap.
Quick answer: To sell mineral rights in Illinois, get competing written offers instead of taking the first letter in the mail. Value is driven mostly by which basin the tract sits in, with the Illinois Basin in the south in highest demand, plus production and lease terms. Illinois uses a special statutory mechanism rather than a simple lapse, so staying identifiable in the record keeps a sale clean. Submit your tract once and compare offers from vetted buyers, with no upfront fee.
More buyers, a wider spread, more reason to compete
Demand in Illinois is driven by the Illinois Basin oil fields. The catch is that more buyers also means more lowball letters, so the spread between the first offer and the best one is wide. Competition closes it.
How Illinois treats mineral ownership
Illinois does not allow loss by nonuse. Its Severed Mineral Interest Act works through registration and identification of owners rather than reverting interests. The relevant law is 765 ILCS 515 (Severed Mineral Interest Act).
The takeaway for a seller: ownership is not lost the way a hard lapse state works, but staying identifiable in the record keeps everything simple. Special statutory mechanism rather than a simple nonuse lapse; see statute. Forced pooling is used here, so a tract can be brought into a unit by order when owners do not all agree. It also has a surface owner protection law that requires operators to compensate for surface damage.
What moves Illinois mineral value
In Illinois, where the tract sits decides most of the value. The oil rich acreage draws the deepest pool of buyers, with the Illinois Basin in the south at the center. Stripper oil fields worked since 1905 follows separately.
Then the interest itself sets the number. Producing minerals trade on the income they pay, leased acreage on the chance of a well, and unleased acreage on potential alone. Offers are quoted in net mineral acres and a decimal interest, so pin down your acreage and share first and the comparison stays honest. Reaching out to buyers one at a time, the shotgun approach, almost always leaves money on the table, because no single buyer is forced to compete.
For a first estimate on a producing interest, run the royalty calculator, then read the value guide for the factors that move the number.
Selling Illinois minerals, start to close
Selling is a short sequence. Tell us the county and your interest, attach a recent check stub or lease if you have one, and competing written offers come back from vetted buyers for you to weigh side by side before you close through a licensed closing or title company, with no upfront fee and no obligation.
Illinois mineral and royalty facts
- Oil and gas production, 2025: about 7 million barrels of crude oil. U.S. EIA
- State severance or production tax: No general severance; small production assessment only.
- State income tax on royalty income: Yes, taxed as income.
- Dormant mineral act: A special statutory mechanism, not a simple nonuse lapse.
- Forced pooling: Yes.
Taxes when you sell or hold Illinois minerals
Two layers of tax matter. When you sell, mineral rights held more than a year are generally taxed by the IRS as a long term capital gain rather than ordinary income. While you hold and collect royalties, that money is ordinary income, though the IRS allows a percentage depletion deduction, commonly 15 percent for oil and gas, that shelters part of it.
At the state level, Illinois taxes oil and gas royalty income, and a gain on a sale, as part of its state income tax. Separately, Illinois levies no general oil and gas severance tax, only a small per unit production assessment, with a 3 to 6 percent severance applying narrowly to high volume hydraulically fractured horizontal wells at the wellhead, which is why a buyer values the net royalty you actually receive, not the gross.
General information, not tax advice. Confirm your situation with a CPA or tax advisor. Sources: the IRS on capital gains and depletion, the Illinois Department of Revenue, and our state tax on mineral and royalty income page.
Where your Illinois mineral interest is on record
Three places hold the paper trail. The deed that conveyed your minerals is recorded with the county recorder or clerk where the land sits. Well and production records are kept by the state oil and gas regulator, the Illinois Department of Natural Resources, Office of Oil and Gas Resource Management. Unclaimed royalty money, from checks that never reached an owner, sits with the state unclaimed property program.
Start here: build your checklist with our unclaimed royalties finder, and see how active your county is with the oil and gas production lookup.
Common questions
How do I sell mineral rights in Illinois?
Give us the county and your interest with any lease or check stub on hand. We gather competing offers from vetted buyers for you to compare, then you close through a licensed closing or title company.
Can Illinois take my minerals if they sit unused?
Not through a simple nonuse lapse. Illinois does not allow loss by nonuse. Its Severed Mineral Interest Act works through registration and identification of owners rather than reverting interests. Special statutory mechanism rather than a simple nonuse lapse; see statute.
Which Illinois plays draw the most competing offers?
The Illinois Basin in the south sees the most active bidding, and competing offers there routinely beat the first letter in the mail.
What is a non-participating royalty interest (NPRI)?
A non-participating royalty interest pays a share of production but carries no leasing right and no bonus. It sells like a producing royalty, priced on the income it returns.
Do I sign a division order before selling?
Signing a division order confirms your share for payment purposes. It is not a sale, it does not transfer ownership, and you can sign it and still sell later.
Is getting Illinois mineral offers free?
Yes. Competing offers and a value are free, with no upfront fee and no obligation to sell.
What taxes apply when I sell Illinois minerals?
A sale is generally treated as the sale of a capital asset, so federal capital gains rules usually apply, while royalty checks are ordinary income and the operator pays state severance tax on production. Some producing minerals are also taxed locally. See the state tax index for specifics, and confirm with a tax professional.
Does Illinois tax oil and gas royalty income?
Yes. Illinois taxes oil and gas royalty income, and a gain on a sale, as part of its state income tax. Federal tax applies on top.
What is the severance tax on oil and gas in Illinois?
Illinois levies no general oil and gas severance tax, only a small per unit production assessment, with a 3 to 6 percent severance applying narrowly to high volume hydraulically fractured horizontal wells. Royalty owners bear their pro rata share, shown as a deduction on the monthly check. See the Illinois Department of Revenue for the current figure.
How do I find out what minerals I own in Illinois?
Check the county recorder where the land sits for the deed, the Illinois Department of Natural Resources, Office of Oil and Gas Resource Management for well and production records, and the state unclaimed property program for any unclaimed royalty money. Our unclaimed royalties finder builds the checklist.
More on selling
How to sell mineral rights, what they are worth, selling oil and gas royalties, selling inherited minerals, and the Illinois mineral rights law page. Also see selling in Kentucky and New Mexico.
See what your Illinois minerals are really worth
One short form. Written offers from vetted buyers, usually within a working day. Free, no upfront fee, no obligation.
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