Williamson County Property Tax Bills 2026: Late Statements & Updated Payment Deadlines

Last updated: Oct. 30, 2026

Williamson County began mailing 2026 property tax statements the week of Oct. 19, 2026. If your home is in Coupland, Florence, Georgetown, Leander or Round Rock ISD, your statement is on hold until the Nov. 3 tax rate election results are final. That affects about 130,000 properties, according to Tax Assessor-Collector Catherine Totty. Taxes are due when you receive the statement, and the county lists Feb. 1, 2027 as the delinquency date.

Why haven't I received my Williamson County tax bill?

The Williamson County Tax Office says five school districts adopted tax rates that must be approved by voters on Nov. 3: Coupland ISD, Florence ISD, Georgetown ISD, Leander ISD and Round Rock ISD. The county can't print a final bill until it knows which rate applies, so statements for about 130,000 properties in those districts will be mailed after the election results are finalized.

If you live outside those five districts and still don't have a statement, you can look up your property and print a statement on the Tax Office website. Not getting a bill doesn't change the due date or any penalty and interest under Texas Tax Code §31.01(g).

When are Williamson County property taxes due for 2026?

Taxes are due on receipt and become delinquent on Feb. 1, 2027, according to the county. The Tax Office's property tax page asks owners to pay in full by Sunday, Jan. 31, 2027, and says penalty and interest of 7% are added on Monday, Feb. 1, 2027. Texas generally moves a deadline that falls on a weekend to the next business day (Tax Code §1.06), but the safest plan is to pay by Jan. 31.

• Online or by phone: through the Tax Office website.
• In person: Tax Office locations are open 8 a.m. to 5:30 p.m. Mondays and 8 a.m. to 4 p.m. Tuesdays through Fridays. Drive-thru service is available in Cedar Park, Georgetown and Round Rock, and there are payment drop boxes at every location.
• Questions: email propertytax@wilcotx.gov or call 512-943-1601.

What happens to my bill if the school tax rate election fails?

A voter-approval tax rate election (VATRE) decides whether the district keeps the rate its board adopted or falls back to a lower rate. Leander ISD is one example. According to Leander ISD, if Proposition A passes the total rate is $1.1169 per $100 of value, and the average homeowner, with a taxable value of $460,292, would have an estimated district tax bill of $5,141, about $27.56 more than last year. If it fails, the rate is $1.0869. Each district's notice lists its own numbers, so check the district's website for yours.

Homeowners 65 and older or disabled who have a school tax ceiling won't pay more than their ceiling amount for school taxes either way, unless they've made improvements to the home.

I have a mortgage. Do I need to do anything?

If your lender pays your taxes from escrow, the Texas Comptroller notes that the bill goes to your mortgage company. You can still review your statement online. Check that your homestead and any over-65 or disability exemptions show correctly, because those affect what your lender pays and your escrow next year.

Can I still lower my Williamson County property taxes?

Voters and taxing units set rates, but the value on your bill comes from the Williamson Central Appraisal District (WCAD), and you can protest that value every year.

• Check your exemptions now so they carry into your 2027 notice.
• Watch for your 2027 notice of appraised value in the spring.
• Know the deadline. May 15, 2027 is a Saturday, so the protest deadline is Monday, May 17, 2027, or 30 days after your notice is delivered, whichever is later.
• Gather evidence: sales of similar homes, photos of needed repairs and contractor estimates for an informal review or Appraisal Review Board (ARB) hearing.

See our Williamson County property tax protest guide and our 2026 Texas property tax bill tracker. You can file yourself, or protest with TaxDrop. Here's how a Texas property tax consultant works.

Sources: Williamson County, "Williamson County to mail 2026 property tax statements next week" (Oct. 13, 2026); Williamson County Tax Office, Property Tax; Leander ISD, Board Calls Nov. 3 School Funding Election; Texas Comptroller, Property Tax Bills; Texas Tax Code Chapter 31; Texas Tax Code §§1.06 and 41.44.