In short

Each summer every taxing unit must post its proposed rate on a state-required website.1 Owners must be sent a notice that their estimated taxes are there.2 For Williamson County it is williamsonpropertytaxes.org.3 Look up your own home to see what each body plans to charge.

The 30-second version

  • Where: Texas.gov/PropertyTaxes links to each county’s site.1
  • When: early August, after values are certified.2
  • What: for each body, last year’s rate, the no-new-revenue rate, the voter-approval rate, and the proposed or adopted rate.1
  • Why it matters: it lists each body’s hearing date, so you know when to speak.1

How to read your entry

ColumnWhat it means
No-new-revenue rateAbout the same money from the same homes as last year1
Voter-approval rateHighest rate without an election1
Proposed / adopted rateWhat the body plans or chose1
Estimated taxYour value times each rate, after exemptions1

Example: the county adopted 0.381218 for 2026, a bit above its no-new-revenue rate of 0.376230. Its separate road rate went the other way: 0.040329, below its 0.045317. Added together, the two equal the combined no-new-revenue rate, 0.421547.3

The other side

  • It is an estimate. Your final bill comes in October and may differ.2
  • It is detailed, and owners have to go to the website to see it. The law also requires a newspaper notice of rate hearings.2

Questions to ask

  • Where does the tax office post the dates of each unit’s rate hearing?
  • How does the tax office update the tax-rate website when a unit changes its proposed rate?

What you can do next

Changes to this page

  • Nov. 2, 2026: Reworded a line about the estimated-tax website.
  • Nov. 2, 2026: We re-checked every figure and date against our sources.
  • Nov. 2, 2026: Rewrote the questions to ask so each is open, neutral and addressed to the public body.
  • Nov. 2, 2026: Added questions to ask.

Footnotes

  1. Texas Comptroller, “Truth-in-Taxation.” https://comptroller.texas.gov/taxes/property-tax/truth-in-taxation/ (saved copy, retrieved Nov 2026) ↩ ↩2 ↩3 ↩4 ↩5 ↩6 ↩7 ↩8

  2. Texas Comptroller, “Property Tax Calendar – Deadlines.” https://comptroller.texas.gov/taxes/property-tax/calendars/deadlines.php (saved copy, retrieved Nov 2026) ↩ ↩2 ↩3 ↩4

  3. Williamson County Truth-in-Taxation site (the state-required tax-rate database), https://williamsonpropertytaxes.org, tax year 2026 rows, checked 2026-11-01. Williamson County adopted 0.381218 (no-new-revenue 0.376230, voter-approval 0.405896, last year 0.369447); FM/RD adopted 0.040329 (no-new-revenue 0.045317, voter-approval 0.047309); City of Leander adopted 0.417282 (no-new-revenue 0.430886, voter-approval 0.467986). ↩ ↩2