Every year, a Texas homeowner opens the tax statement, sees that the rate printed on it went down, and then sees a bottom-line number that went up. It feels like a contradiction, and it sparks a familiar round of frustration: how can the tax be higher when the rate is lower? The answer is not a trick or an error. It is the basic arithmetic of how a property tax works, and once a homeowner understands it, the bill stops being a mystery.
This article explains the two numbers that determine a property tax bill — the rate and the value — and why a falling rate can be more than offset by a rising appraisal. It also covers the limited protections Texas law gives homeowners, and how to tell which of the two numbers is actually driving an increase.
A tax bill is rate times value
A property tax bill is the product of two figures: the appraised (taxable) value of the property and the tax rate set by each local government. The Texas Comptroller lays out this structure on its property tax system basics page. Because it is a multiplication, both factors matter. A rate can fall while the value climbs, and if the value climbs by more, in percentage terms, than the rate falls, the bill goes up.
An example makes it concrete. Suppose a home was taxed last year on a value of $250,000 at a rate of $1.20 per $100 of value, producing a $3,000 bill. This year the rate drops to $1.15, which sounds like relief. But if the taxable value rose to $280,000, the new bill is about $3,220 — higher than before, despite the lower rate. The rate cut was real; the value increase was simply larger.
Why values keep climbing in Texas
County appraisal districts are required to appraise property at its market value as of January 1 each year. In a state where home prices and commercial values have risen sharply in many markets, those reappraisals push taxable values upward. The Comptroller’s explanation of the appraisal process describes how districts estimate value and how owners are notified each spring.
Texas does give homestead owners a brake. A property with a homestead exemption is subject to a 10 percent annual cap on the increase in its taxable value, regardless of how much the market value rose. The Comptroller’s exemptions page explains this cap. It slows the rise but does not stop it: a homestead’s taxable value can still climb up to 10 percent a year until it catches up with market value, and homes without a homestead exemption have no such cap at all.
The cap creates a gap that often confuses homeowners. In a hot market, a home’s market value can jump well beyond 10 percent in a single year, but the taxable value used for the bill can only rise 10 percent. The appraisal notice shows both numbers, and the difference between them carries forward. That is why a homeowner can see taxable value climb the full 10 percent for several years in a row even after the market has cooled — the taxable value is simply catching up to a market value it never fully reflected. Understanding this prevents the mistaken belief that a 10 percent increase means the home actually appreciated 10 percent that year.
Rate compression and the relief laws
Recent state action complicates the picture in a way that benefits homeowners. Texas has spent billions “compressing,” or buying down, school district tax rates, and has raised the school homestead exemption to $140,000. The Comptroller’s review of the 2023 relief package describes how compression lowers the rate the state funds. That is one reason a homeowner sees the rate fall.
But compression and the bigger exemption apply to the school portion of the bill, while cities, counties, and special districts set their own rates independently. So a homeowner can see the school line drop sharply, thanks to the state, and still see the total rise because rising appraisals lifted every line and because the city or county did not cut its own rate.
The “no-new-revenue” rate, explained
Texas built a tool into the system to expose exactly this dynamic. Each taxing unit must calculate a “no-new-revenue rate” — the rate that would raise the same total amount of money this year as last year, given the new appraised values. The Comptroller’s truth-in-taxation resources explain this calculation. If a government adopts a rate above the no-new-revenue rate, it is collecting more total money than the year before, even if the rate number is lower than last year’s rate.
This is the heart of the confusion. A lower posted rate can still be higher than the no-new-revenue rate, because values rose. When that happens, the government is taking in more revenue overall, and the typical homeowner pays more. Truth-in-taxation rules require governments to publish these figures and hold public hearings before adopting a rate above the no-new-revenue level.
How to tell what is driving your increase
A homeowner can diagnose a higher bill in two steps. First, compare this year’s appraisal notice with last year’s: did the taxable value rise, and by how much? Second, compare the rates line by line for each taxing unit. If the value jumped and the rates only edged down, the value is the culprit. If a particular government raised its rate above the no-new-revenue level, that unit is collecting more.
Many counties run truth-in-taxation websites where an owner can enter a specific property and see how each proposed rate would change the bill before any rate is final. The Comptroller links to these from its property tax pages. A homeowner who thinks the appraised value is too high has a separate remedy — the protest process before the local appraisal review board, which runs each spring.
The two remedies attack the two halves of the equation. Protesting the appraisal targets the value side: if a homeowner can show the appraisal district overstated the home’s market value or appraised it unequally relative to comparable properties, the taxable value comes down, and so does every line on the bill. Speaking at a rate hearing targets the rate side: it is the chance to tell a city council or commissioners court that adopting a rate above the no-new-revenue level means collecting more from taxpayers. A homeowner frustrated by a rising bill has standing in both arenas, and the appraisal notice and the truth-in-taxation figures tell them which one to pursue.
The no-new-revenue rate is the honest measuring stick
A lower rate is not the same as a lower bill. The bill is rate multiplied by value, and in much of Texas, value has been the stronger force. The state’s rate compression and larger homestead exemption have genuinely pulled the school line down, but rising appraisals and independently set city and county rates can push the total back up. Compare this year’s posted rate to the no-new-revenue rate published under truth-in-taxation rules — that’s the number that reveals whether a local government is actually taking more of your money, regardless of what the headline rate did.
This article was produced with AI assistance and reviewed by a human editor. Figures are linked to their primary sources; where a claim could not be verified from the public record, we say so.
