Ag Exemption Rollback Tax in the Texas Hill Country: What Changed

Almost every option period on Hill Country acreage hits the same moment. Someone on the title company's side mentions the rollback tax, both sides nod like they understand it, and the number that gets floated around the kitchen table is almost always too big.

That's not because anyone is trying to mislead the other side. It's because the rollback tax used to be a genuinely brutal penalty, and a lot of the guidance still circulating online describes a version of the law that stopped existing years ago. If you're buying or selling ag-valued or wildlife-valued land anywhere from Burnet to Llano, the gap between what people assume they're negotiating and what the Texas Tax Code actually charges is worth understanding before you write it into a contract.

What the rollback tax used to cost, and what it costs now

For decades, converting agricultural land to a non-qualifying use meant paying back taxes on the difference between the land's productivity value and its market value for the previous five years, plus 7 percent annual interest. That penalty was steep enough that it shaped how ranches got subdivided, how developers timed their purchases, and how much sellers discounted land they knew would trigger it.

Two legislative sessions changed that. House Bill 1743, effective September 1, 2019, cut the lookback period from five years to three and dropped the interest rate from 7 percent to 5 percent. Then House Bill 3833, effective June 15, 2021, went further and eliminated the interest charge entirely. The Texas Comptroller's office confirms the current mechanics directly: the rollback tax is now the difference between agricultural-value taxes and market-value taxes for each of the previous three years, with no interest added on open-space or timber land.

Here's the full arc in one place:

That last row is where we've been sitting for more than five years now. It's also the row that a surprising number of current guides, including some published in 2026, still get wrong by quoting a hybrid of the old and new rules, usually three years plus interest that no longer applies.

Running the actual math

Take a 40-acre tract outside Burnet with a market value of $1,000,000, a productivity value of $16,000, and a combined county and school tax rate around 1.8 percent, which is a reasonable composite for rural Hill Country counties. At market value, the annual tax bill would run about $18,000. At the ag valuation, it's closer to $288. That $17,712 annual gap is what the rollback recaptures if the qualifying use ends.

Under the old five-year, 7 percent rule, that exposure would have compounded past $100,000 by the time interest was added in. Under the law that's actually on the books today, it's three years with no interest, or about $53,000. Same land, same price, same tax rates. The only thing that changed is which statute applies, and that alone cuts the exposure by roughly half.

That gap matters at the negotiating table. A seller who assumes the buyer is inheriting six figures of hidden liability may price the land to compensate for a risk that's already been cut in half by statute. A buyer who's been told to budget for interest that hasn't existed since 2021 is negotiating against a number that doesn't exist anymore either. Getting the actual figure right, using this year's law, changes who can reasonably absorb the rollback and how much it should cost to shift it from one side of the contract to the other.

Why Burnet County's own math pushes people toward wildlife valuation

The rollback tax only matters if the land carries a qualifying valuation in the first place, and qualifying isn't automatic. Every county appraisal district sets its own degree-of-intensity standard, meaning the amount of livestock or crop activity that counts as real agricultural use rather than a hobby.

Burnet Central Appraisal District's own ag policy manual sets that standard for livestock grazing at one animal unit for every 15 to 30 acres. On rocky, cedar-covered Hill Country ground, hitting that ratio with cattle can be a genuine struggle. A tract that looks like plenty of acreage on paper may not carry enough usable grass to support the stocking rate the district expects.

That's the practical reason so many owners in Burnet and Llano counties end up converting from traditional agricultural use to wildlife management valuation instead. The tax treatment is identical. What changes is the qualifying activity. A landowner who can't reliably run the required number of cattle can instead implement three of the seven recognized wildlife practices, such as habitat control, supplemental water, or predator management, and keep the same reduced valuation without fighting the land's own terrain.

There's a catch worth knowing before you assume this is a shortcut. Wildlife management is a conversion path, not a new way to qualify from scratch. The Texas Parks and Wildlife Department's guidelines are explicit that the land must already carry an agricultural or timber valuation before it can convert. Raw acreage with no farming or ranching history can't skip straight to a wildlife exemption just because it happens to be full of deer.

What actually happens at the closing table

The rollback tax rarely blows up a deal because of the tax itself. It blows up deals because nobody addressed it until it was too late to negotiate. A few mechanics are worth confirming before you're past the option period:

1. Buying the land doesn't trigger a rollback. Only a change in the qualifying use does. A ranch that's properly ag-valued today stays ag-valued at closing as long as whatever activity qualified it, grazing, hay, or an approved wildlife plan, keeps going under the new owner.

2. The valuation doesn't transfer automatically. The five-of-seven-year history stays attached to the land itself, but a new owner still has to file their own application, typically Form 50-129, with the county appraisal district. Miss that filing and the district can treat it as a lapse even if the cattle never left.

3. A homesite carve-out is usually prorated. Building a house on three acres of a 150-acre ranch generally only triggers rollback on those three acres, provided the rest of the tract keeps its qualifying use and the appraisal district's paperwork reflects the split.

4. Wildlife conversion requires an existing ag valuation. As noted above, this isn't a way to newly qualify land that's never carried a special appraisal.

5. Who pays the rollback is a contract term, not a tax code decision. Some sellers build the exposure into a lower sale price. Some buyers accept it as part of the deal. Some parties split it. What isn't optional is deciding this during the option period rather than discovering it at the title company weeks before closing.

Frequently asked questions

Does selling the land by itself trigger a rollback? No. A sale doesn't trigger rollback if the buyer continues the same qualifying use. The tax is tied to a change in how the land is used, not to a change in who owns it.

If land converts to wildlife management, does the five-of-seven-year history restart? No. Wildlife management is a continuation of the existing agricultural appraisal through a different qualifying activity, not a fresh application. The land's history stays intact as long as the conversion is filed correctly and the required practices are documented each year.

Who typically ends up paying the rollback in a Hill Country deal? There's no default answer written into the tax code. It comes down to what the buyer and seller agree to during the option period, whether that's an adjusted price, a shared cost, or the buyer accepting it outright. The one certainty is that it has to be negotiated on purpose, not left for whoever gets the tax bill first.

If you're weighing a Hill Country ranch or acreage purchase and want to know what a specific tract's valuation history actually looks like before you write an offer, Jim Banks has spent two decades in this country and knows which questions to ask the appraisal district before you're past the option period, not after. Let's Connect.