How are property tax rates determined in Texas?

Property tax rates in Texas are set by each taxing district (municipality, school district, park district, library, etc.) based on their annual levy (the amount of tax revenue they need). The rate is calculated by dividing the levy by the total assessed value of all property in the district.

What is the composite tax rate?

The composite tax rate is the sum of all overlapping taxing district rates that apply to a specific property. A typical property may be taxed by several overlapping districts. The composite rate determines your total tax bill when multiplied by your property's assessed value.

Why do tax rates vary within the same town?

Properties within the same municipality can have different composite rates because overlapping districts (school, park, fire, library) have different boundaries. A home in one school district may have a different rate than a home two blocks away in a different school district.

Castle Hills, TX Property Tax Rate 2026 — Full Breakdown by District

Showing latest tax year with year-over-year changes. Full rate history available with a paid plan. View plans →

Property Tax — Tax Year 2025 (payable 2026)i

TX Comptroller

Composite Ratei

2.16%–2.56%+1%YoY

Varies by school district

Municipal Portioni

0.5788%+7.1%YoY24.5% of total

Effective Ratei

2.16%–2.56%

Est. Annual Taxi

$9K–$11K

Median Home Valuei

$419,400

Total Leviedi

$4.0B

Tax Per Capitai

$1,433

Rate varies by school district. Your actual rate depends on which school district your property falls in.

Rate Trend — click a year to explorei

20242025

Municipal

Other Districts

Where Your Tax Dollar Goesi

$0.53 Harlandale ISD

$0.51 South San Antonio ISD

$0.49 Southwest ISD

$0.49 San Antonio ISD

$0.49 Medina Valley ISD

$0.46 Southside ISD

$0.46 Schertz-Cibolo-Universal City ISD

$0.46 Somerset ISD

$0.46 Comal ISD

$0.43 Boerne ISD

$0.43 Northside ISD

$0.42 Edgewood ISD

$0.42 North East ISD

$0.41 Judson ISD

$0.41 Alamo Heights ISD

$0.40 East Central ISD

$0.36 Floresville ISD

$0.24 City of Castle Hills

$0.13 Bexar County

$0.12 University Health System

$0.06 Alamo Community College District

Estimated Tax by Home Valuei

$200K

$4,318–$5,123

$300K

$6,477–$7,685

$400K

$8,636–$10,247

$500K

$10,796–$12,809

$600K

$12,955–$15,370

$700K

$15,114–$17,932

$800K

$17,273–$20,494

Highlighted value is closest to median home value ($419K)

21 Overlapping Taxing Districtsi

Harlandale ISDUnit K-12i

53.3%1.2575%

$28.9M levied

South San Antonio ISDUnit K-12i

50.7%1.1959%

$31.0M levied

Southwest ISDUnit K-12i

49.1%1.1598%

$79.0M levied

San Antonio ISDUnit K-12i

48.9%1.1552%

$308.3M levied

Medina Valley ISDUnit K-12i

48.8%1.1527%

$36.3M levied

Southside ISDUnit K-12i

45.8%1.0805%

$28.2M levied

Schertz-Cibolo-Universal City ISDUnit K-12i

45.6%1.0769%

$14.1M levied

Somerset ISDUnit K-12i

45.6%1.0755%

$6.7M levied

Comal ISDUnit K-12i

45.5%1.0748%

$37.9M levied

Boerne ISDUnit K-12i

42.8%1.0109%

$34.7M levied

Northside ISDUnit K-12i

42.6%1.0049%

$745.1M levied

Edgewood ISDUnit K-12i

41.8%0.9861%

$21.5M levied

North East ISDUnit K-12i

41.6%0.9822%

$470.7M levied

Judson ISDUnit K-12i

41.5%0.9796%

$137.1M levied

Alamo Heights ISDUnit K-12i

40.6%0.9572%

$78.2M levied

East Central ISDUnit K-12i

39.5%0.9319%

$81.5M levied

Floresville ISDUnit K-12i

36.2%0.8549%

$36K levied

City of Castle Hillsi

24.5%0.5788%

$5.7M levied

Bexar Countyi

12.7%0.3000%

$732.7M levied

University Health Systemi

11.7%0.2762%

$688.4M levied

Alamo Community College Districti

6.3%0.1492%

$402.5M levied