This guide helps you handle Property Tax in Williamson County, Texas, including how to look up a bill, check payment details, find deadlines, and identify which office handles values, exemptions, or tax office questions. It points you to the Williamson County Tax Assessor-Collector and Williamson Central Appraisal District services that match the task.
This is an independent help page, not a government site. It does not provide legal, tax, or financial advice or guarantees, so use official county tools and offices for decisions and account-specific details.
Williamson County property search
The main starting point is the county’s online property search and payment system.
- Owner name
- Situs address
- Property number, Property ID, or Quick Ref ID
- Legal description, if needed for a narrower search
- Tax year, if you are checking a specific bill
Once you have one of those details ready, use the county tool to open the account record, review billing information, and move to payment or receipt options.
- Open the Williamson County property search.
- Search by owner name, property address, or account-based fields shown on the page.
- Review the account for tax year details, balance information, and payment access.
- Use the same system to make a payment or get a copy of the statement or receipt tied to that property.
If your taxes are escrowed by a lender, you can still use the county search system to view billing information for the property.
Payment deadlines and methods
For 2025 taxes, payment in full is due by January 31, 2026. The delinquency date is February 1, 2026, and unpaid balances are subject to penalty and interest.
| Method | What to know | Timing note |
|---|---|---|
| Online | e-checks have no convenience fee. Credit and debit card payments have a 2.15% fee with a $2.50 minimum. | Online payments made by 11:59 p.m. Central Standard Time on January 31 are considered timely. |
| Send payment with the coupon or Quick Ref ID and owner name. Commercial postal meter imprints are not treated as postmarks. | A U.S. Postal Service postmark on or before January 31, 2026, is considered timely. | |
| In person | Cash, checks, money orders, and cards are accepted during normal business hours. Card payments carry the same 2.15% fee with a $2.50 minimum. | In-person payments made during normal business hours on or before January 31, 2026, are considered timely. |
| Telephone | You will need the Property ID, payment amount, and payment method. The phone payment number is (866) 594-4215. | Telephone payments made by 11:59 p.m. Central Standard Time on January 31, 2026, are considered timely. |
| Drop box | Use check, cashier’s check, or money order only. Do not place cash or credit card information in a drop box. | Drop box payments placed by 11:59 p.m. on January 31, 2026, are considered timely. |
| Bank bill pay | Your bank may send an electronic payment or a paper check. Payments without a USPS postmark are treated as paid when received. | Schedule well in advance so the payment arrives or is postmarked on time. |
You can compare methods and review county instructions on the official payment options page.
Installments, partial payments, and prepayments
Williamson County accepts partial payments, but any unpaid portion becomes delinquent on the normal schedule and can accrue penalty and interest.
Quarter installments are available for homesteaded property with a qualifying Over-65, Disabled Person, Disabled Veteran, or related surviving spouse status under the Texas Property Tax Code. The county shows a four-part schedule with installments due January 31, March 31, May 31, and July 31.
Taxpayers can also use monthly scheduled prepayments for future taxes if current and prior taxes are not delinquent. That plan runs through September, requires an online profile and valid email address, and must be set up again each year.
If you want the county’s plan details, use the quarter installment information or the monthly scheduled prepayments page.
Values, exemptions, and tax rates
The Williamson County Tax Assessor-Collector collects property taxes, issues tax certificates in the Georgetown office, and provides payment and billing support. That office does not set tax rates or determine property values.
The Williamson Central Appraisal District handles taxable values, exemptions, address and ownership changes, notices of appraised value, protests, and taxing-jurisdiction assignments. If your question is about a homestead exemption, an Over-65 exemption, a Disabled Person or Disabled Veteran exemption, a property value change, or a protest, that is the office to contact.
For exemption filing, the appraisal district offers an online process through its exemption page. For rate review, Williamson County also publishes taxing rates and exemptions by jurisdiction.
Apply for exemptions through Williamson CAD or review the county’s tax rates and exemptions by jurisdiction if you need to see how local rates are listed.
Statements, receipts, and certificate requests
The county’s search system is the fastest official place to get a copy of a statement or receipt tied to a property account. If you need a separate request, Williamson County also provides an online statement and receipt request form and says responses are sent within 3 business days by email.
Tax certificates are available for a $10 fee each. In-person certificate requests are handled at the Georgetown office only, and online requests can also be submitted for phone payment or larger requests.
Request a statement or receipt or use the tax certificate request page for certificate orders.
Property tax contacts
Use the tax office for billing, payment, certificates, and general collection questions. Use the appraisal district for values, exemptions, ownership updates, and protest-related matters.
-
Williamson County Tax Assessor-Collector — 904 S Main Street, Georgetown, TX 78626
Phone: (512) 943-1601
Email: [email protected]
Hours: Monday 8:00 AM - 5:30 PM; Tuesday through Friday 8:00 AM - 4:00 PM -
Williamson Central Appraisal District — 625 FM 1460, Georgetown, TX 78626
Phone: (512) 930-3787
Hours: Monday - Friday 8:00 AM - 5:00 PM -
Cedar Park Tax Office — 350 Discovery Boulevard, Suite 101, Cedar Park, TX 78613
Drive-thru service is available for property tax payments.
Phone: (512) 943-1601 -
Round Rock Tax Office — 1801 E Old Settlers Boulevard, Suite 115, Round Rock, TX 78664
Drive-thru service is available for property tax payments.
Phone: (512) 943-1601 -
Taylor Tax Office — 412 Vance Street, Suite 1, Taylor, TX 76574
Phone: (512) 943-1601
Common questions
How do I look up my Williamson County property tax bill online?
Use the county property search system to search by owner name, situs address, Property ID, account number, or Quick Ref ID. The same official tool also lets you review billing details and move into payment or receipt options. Start with the property record that best matches your account.
What happens if I cannot pay the full amount by January 31?
Williamson County says taxpayers are encouraged to pay as much as possible, but the unpaid balance is still subject to penalty and interest after the delinquency date. For 2025 taxes, the delinquency date is February 1, 2026. If you may qualify for quarter installments, check that option before the first deadline passes.
Which office handles exemptions and property value questions?
The Williamson Central Appraisal District handles exemptions, appraised values, ownership and address changes, and protests. The tax office collects taxes but does not determine values or set tax rates. Contact WCAD if your issue is about the amount of value on the property or exemption eligibility.
Can I get a statement, receipt, or tax certificate from the county?
Yes. Statements and receipts can be obtained through the county search system or by submitting the county’s statement and receipt request form. Tax certificates are available for a $10 fee each, and in-person certificate service is limited to the Georgetown office.
Are online payments posted right away?
No. The county says credit card and e-check payments may take about 5 to 7 business days to appear in the system or bank history. When the payment is applied to the property account, the posting date reflects the original transaction date. Pay early if you are close to the deadline.