The median Round Rock homeowner pays $6,424 a year in property tax. If your appraisal district valued your home too high, a protest can lower that bill. File by Monday, May 17, 2027.
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The median Round Rock homeowner pays $6,424 a year in property tax. If your appraisal district valued your home too high, a protest can lower that bill. File by Monday, May 17, 2027.
Your Round Rock tax bill is several separate taxes added together. Each taxing unit sets its own 2025 rate per $100 of taxable value (Texas Comptroller, 2025 Tax Rates and Levies):
The school district is usually the biggest line on your bill, so two Round Rock homes with the same value can owe different amounts. Municipal utility districts (MUDs) and public improvement districts (PIDs) add more in some subdivisions. Check the taxing units listed on your notice.
Homestead exemption: Texas school districts must exempt $140,000 of a homestead's value, plus another $60,000 for owners 65 or older or disabled (Texas Comptroller). On Round Rock ISD's rate, the $140,000 exemption cuts about $1,250 a year off the school portion. Homestead appraisal increases are capped at 10% a year, plus new improvements.
Almost all of Round Rock is in Williamson County and appraised by Williamson Central Appraisal District (WCAD). A small southern area is in Travis County (Travis CAD). Your notice names your district.
How to protest your Round Rock property taxes
Want a licensed consultant to handle it? A Round Rock property tax consultant files with WCAD or your county's district, handles the informal review and represents you at the ARB.
Protest results
Results vary by property, and a reduction is not guaranteed. See TaxDrop pricing and the Texas property tax protest statistics.
The median Round Rock homeowner pays about $6,424 a year on a median $418,600 home, an effective rate of about 1.53% (U.S. Census Bureau ACS 2020β2024). Your bill depends on your appraised value, exemptions and school district.
For 2025, the City of Round Rock rate is $0.3720 per $100. Adding the county, school district and other countywide units gives a combined rate of about 1.78% in Round Rock ISD before special districts and exemptions (Texas Comptroller).
Monday, May 17, 2027, because May 15 falls on a Saturday, or 30 days after your appraisal notice was mailed, whichever is later.
Almost all of Round Rock is in Williamson County and appraised by Williamson Central Appraisal District (WCAD). Your notice names your district.
You can protest yourself for free. A licensed consultant gathers evidence, negotiates with WCAD and attends the ARB hearing for you. TaxDrop Pro handles the whole protest, from filing through the hearing, with no upfront fee.
Yes. TaxDrop Pro can take over a protest you already filed, as long as your hearing hasn't happened yet and you give us at least 7 days' notice before the hearing date.
Filing a protest carries no penalty. WCAD or the ARB decides your value based on the evidence. In 2026, 92% of TaxDrop clients' closed Texas protests got a reduction.
More on Round Rock-area property taxes