No state income tax sounds like a bargain—until you see the property tax bill. Here’s how Williamson County’s system really works, and how to estimate what you’ll actually owe.
Newcomers to Central Texas tend to arrive delighted by one fact: Texas has no state income tax. Then they get their first property tax bill and the math snaps into focus. Texas doesn’t tax your paycheck, so it leans heavily on property taxes to fund schools, roads, police, and the rest of local government. For a homebuyer in Georgetown, Leander, Liberty Hill, or anywhere in Williamson County, understanding how that bill is built isn’t optional—it’s the difference between a comfortable budget and a monthly surprise.
The good news: the system is logical once you see how the pieces fit. And Texas offers some of the most generous homeowner exemptions in the country, several of which can dramatically lower what you owe. Here’s the homebuyer’s guide to Central Texas property taxes.
Why Texas Property Taxes Run High
Start with the trade-off. Because there’s no state income tax in Texas, local governments fund themselves primarily through property taxes. That pushes Texas property tax rates above the national average. What you save by not having state income tax withheld from your paycheck, you partly give back through your annual property tax bill. For many households the overall tax burden still compares favorably—but the property tax line item is real, and it’s larger here than in most states.
How the Bill Is Built: Overlapping Taxing Entities
Your total property tax isn’t one rate—it’s the sum of several overlapping taxing entities, each setting its own rate per $100 of appraised value. A typical Williamson County homeowner’s bill stacks up something like this:
- County: Williamson County adopted a rate of roughly 0.3694 per $100 for 2025.
- City: Varies by municipality—the City of Georgetown’s 2025 adopted rate was around 0.3530 per $100. Other cities differ.
- School district: Usually the single biggest slice of the bill—Georgetown ISD, Leander ISD, Liberty Hill ISD, and others each set their own rate.
- Special districts: Any MUD (Municipal Utility District), PID (Public Improvement District) assessment, Emergency Services District (ESD), or other special district that applies to your specific address.
Add those rates together, multiply by your taxable value, and you have your bill. Because the mix of entities varies by location, two homes of identical value across town from each other can carry meaningfully different tax bills. As a rough rule, effective property tax bills in the region commonly land somewhere around 1.5% to 2.5% of value, depending heavily on which districts apply.
You can look up any property’s appraised value and full list of taxing entities through the Williamson Central Appraisal District (WCAD), and pay or review your bill through the Williamson County tax office. For the portions of Leander that fall in Travis County, the Travis County tax office handles billing.
The Exemptions That Lower Your Bill
This is where Texas gives homeowners real relief. Exemptions reduce the taxable value of your home before the rates are applied, and several are worth filing for the moment you qualify—there’s no fee to file with WCAD.
Homestead Exemption
If the home is your primary residence, the homestead exemption lowers the taxable value used to calculate your taxes, particularly for school taxes. It’s the foundational exemption every owner-occupant should file. You apply once through WCAD, and it stays in place as long as the home remains your homestead.
Over-65 and Disabled Exemptions
Homeowners who are 65 or older, or who qualify as disabled, receive an additional exemption that further reduces taxable value. Just as importantly, these homeowners benefit from a school-tax ceiling (often called a “freeze”): once you qualify, the school district portion of your tax bill is generally capped and won’t rise above that ceiling amount even if your appraisal climbs—a powerful protection for retirees on a fixed income.
Disabled-Veteran Exemption
Texas provides disabled-veteran exemptions that reduce taxable value based on the veteran’s disability rating, with the most significant relief available to those with a 100% rating. Surviving spouses may qualify in certain cases. Details and applications are available through WCAD.
The 10% Appraisal Cap
Here’s a protection that matters enormously in a fast-appreciating market like Williamson County. For a homesteaded property, the appraised (taxable) value can increase by no more than 10% per year, regardless of how much the market value actually jumped. In a region where home values have climbed steeply, that cap shields homeowners from runaway tax increases year to year. Note that it applies only to homesteaded properties—another reason to file your homestead exemption promptly after buying.
MUD and PID Add-Ons
As covered above, many newer master-planned communities outside the older city cores carry a MUD tax or a PID assessment on top of the standard county-city-school stack. A MUD adds a value-based rate set by the district’s board (typically higher in a community’s early years, declining as bonds are repaid); a PID adds a fixed special assessment over a set term. Either can add hundreds or thousands of dollars annually. Always check whether your target property sits in a special district—the Williamson County PID page and the WCAD record will tell you—and factor it into your estimate.
Protesting Your Appraisal
You’re not stuck with whatever value WCAD assigns. Each year, property owners receive a notice of appraised value, and you have the right to protest if you believe the appraisal is too high. The process runs through WCAD and, if needed, the Appraisal Review Board. Successful protests—supported by comparable sales, evidence of condition issues, or appraisal errors—can lower your taxable value and your bill. Many Central Texas homeowners protest every year, and there’s no downside to making a well-documented case. Deadlines apply, so watch for your notice and act promptly.
How to Estimate a Property Tax Bill
Here’s a practical method for any home you’re considering:
- Find the appraised value and the property’s list of taxing entities on WCAD.
- Add up the rates for the county, city, school district, and any MUD, PID, or ESD that applies.
- Subtract applicable exemptions (homestead, over-65, etc.) from the taxable value if you’ll qualify.
- Multiply the adjusted taxable value by the combined rate (rates are expressed per $100 of value).
- Add any fixed PID assessment separately, since it’s not value-based.
Always confirm with an itemized tax estimate for the exact address—never a neighbor’s—because special districts can change the picture dramatically from one street to the next.
The Bottom Line
Central Texas property taxes are higher than what newcomers expect, but they’re entirely knowable. Your bill is a stack of overlapping rates—county, city, school district, and any special districts—applied to a taxable value that you can lower through homestead, over-65, disabled, and disabled-veteran exemptions, protect with the 10% appraisal cap, and challenge through an annual protest. Before you buy in Georgetown, Leander, or Liberty Hill, pull the property’s WCAD record, total every entity including any MUD or PID, subtract the exemptions you’ll qualify for, and you’ll know your real monthly cost. In Texas, the savvy homeowner treats the tax bill not as a mystery, but as a number to manage.
Market figures cited are approximate and current as of mid-2026; verify current data before making real estate decisions.
