How Bexar County property tax is calculated
Bexar Appraisal District (BCAD) values the home at 100% of market value on January 1, and in City of San Antonio, Northside ISD 7 units each apply their own rate per $100 to the value left after their own exemptions.[13][2][3] On a $300,000 home that is $7,079.89 with no exemptions, $4,936.49 as a homestead and $3,389.01 for an owner 65 or older; the biggest single line is Northside ISD at $1,655.84.
| Taxing unit | Rate per $100 | Exempt | Taxable | Tax | Share |
|---|---|---|---|---|---|
| Bexar County | $0.2860 | $60,000 | $240,000 | $686.31 | 13.9% |
| Bexar County Road & Flood Control | $0.0140 | $63,000 | $237,000 | $33.27 | 0.7% |
| San Antonio River Authority | $0.0193 | $12,000 | $288,000 | $55.58 | 1.1% |
| Alamo Community College District (Alamo Colleges) | $0.1666 | $5,000 | $295,000 | $491.62 | 10.0% |
| University Health (Bexar County Hospital District) | $0.2762 | $60,000 | $240,000 | $662.96 | 13.4% |
| City of San Antonio | $0.5629 | $60,000 | $240,000 | $1,350.91 | 27.4% |
| Northside ISD | $1.0349 | $140,000 | $160,000 | $1,655.84 | 33.5% |
| Total | $2.3600 | $4,936.49 | 100% |
What property taxes pay for in Bexar County
Northside ISD: 33.5% of a homestead bill, 44% without one (the $140,000 exemption cuts only the school line).[5][2] Largest non-school line: City of San Antonio, 27.4%.
Bexar County property tax rates by area
The same $300,000 homestead costs $4,936 in City of San Antonio, $5,180 in City of San Antonio.
| Area | Total rate per $100 | Tax | Effective rate |
|---|---|---|---|
| City of San Antonio, Northside ISD | $2.3600 | $4,936 | 1.65% |
| City of San Antonio, San Antonio ISD | $2.5120 | $5,180 | 1.73% |
| Taxing unit | Rate |
|---|---|
| Bexar County | $0.285963 per $100 |
| Bexar County Road & Flood Control | $0.014036 per $100 |
| San Antonio River Authority | $0.0193 per $100 |
| Alamo Community College District (Alamo Colleges) | $0.16665 per $100 |
| University Health (Bexar County Hospital District) | $0.276235 per $100 |
| City of San Antonio | $0.56288 per $100 |
| Northside ISD | $1.0349 per $100 |
| Total | $2.359964 per $100 (2.3600%) |
| Taxing unit | Rate |
|---|---|
| Bexar County | $0.285963 per $100 |
| Bexar County Road & Flood Control | $0.014036 per $100 |
| San Antonio River Authority | $0.0193 per $100 |
| Alamo Community College District (Alamo Colleges) | $0.16665 per $100 |
| University Health (Bexar County Hospital District) | $0.276235 per $100 |
| City of San Antonio | $0.56288 per $100 |
| San Antonio ISD | $1.1869 per $100 |
| Total | $2.511964 per $100 (2.5120%) |
Rates for City of San Antonio, Northside ISD moved from $2.290174 to $2.359964 per $100 between the 2025 and 2026 tax years:
| Taxing unit | 2025 | 2026 | Change |
|---|---|---|---|
| Bexar County | $0.276331 | $0.285963 | +0.009632 |
| Bexar County Road & Flood Control | $0.023668 | $0.014036 | −0.009632 |
| San Antonio River Authority | $0.0183 | $0.0193 | +0.001 |
| Alamo Community College District (Alamo Colleges) | $0.14915 | $0.16665 | +0.0175 |
| University Health (Bexar County Hospital District) | $0.276235 | $0.276235 | no change |
| City of San Antonio | $0.54159 | $0.56288 | +0.02129 |
| Northside ISD | $1.0049 | $1.0349 | +0.03 |
| Total | $2.290174 | $2.359964 | +0.06979 |
Bexar County homestead and over-65 exemptions
On top of the state's $140,000 school homestead, local-option homesteads here are 20% (Bexar County, Road & Flood, University Health, City of San Antonio); 4% (San Antonio River Authority; $5,000 minimum); 1% (Alamo Colleges; $5,000 minimum), and the largest over-65 amount is $85,000 (City of San Antonio).[5][6][2][7][8] Statewide rules and savings by county: homestead exemption Texas.
| Exemption | Amount |
|---|---|
| Local-option homestead 20% (Bexar County, Road & Flood, University Health, City of San Antonio) | 20% (min $5,000) |
| Local-option homestead 4% (San Antonio River Authority; $5,000 minimum) | 4% (min $5,000) |
| Local-option homestead 1% (Alamo Colleges; $5,000 minimum) | 1% (min $5,000) |
| Mandatory county homestead for Road & Flood tax ($5,000 for disabled persons instead; not both) | $3,000 |
| Over-65 (Bexar County); disabled: $5,000 | $50,000 |
| Over-65/disabled (San Antonio River Authority) | $5,000 |
| Over-65/disabled (Alamo Colleges) | $50,000 |
| Over-65 (University Health; no disabled exemption listed) | $30,000 |
| Over-65/disabled (City of San Antonio) | $85,000 |
| Over-65/disabled local option on top of state $60,000 (Northside ISD) | $13,330 |
Due date and protests
Bexar County bills are due on receipt and delinquent after January 31, with Texas penalties and interest from February.[9][11] A property tax protest goes to the BCAD Appraisal Review Board by May 15 or 30 days after your notice[12]. Bexar Appraisal District takes protests through Notice of Protest via BCAD Online Services Portal (BCAD online portal)[17]; test your comps in the property tax assessment appeal calculator and see property tax due dates.
Bexar County specifics
Bexar County bills carry two county levies, the general county rate and a separate Road & Flood Control rate ($0.299999 together for 2025). Because the county levies a flood-control tax, homesteads get the state-mandated $3,000 exemption on that levy.[2][5] The City of San Antonio's rate rises from $0.54159 (2025) to $0.56288 (2026).[4]
Bexar County, the City of San Antonio and Alamo Colleges have frozen taxes for 65+ and disabled homeowners since 2005, on top of the school tax ceiling, so long-time senior owners can pay well under what the calculator shows.[2]
What Bexar County homeowners typically pay
Census figures for 2024 put the median property tax paid by Bexar County homeowners at $4,381 on a median home value of $284,400, an effective rate of about 1.54%.[15][16]
Compare Texas counties on the Texas property tax calculator or any county on the property tax calculator.
Frequently asked questions
What is the Bexar County property tax rate?
It depends on the area: $2.3600 per $100 (2.36%) in City of San Antonio, Northside ISD for 2026, the sum of 7 taxing units.
How much is property tax on a $300,000 house in San Antonio?
About $4,936 a year with the homestead exemptions (2026 rates), or $7,080 without them.
What does a homeowner 65 or older pay in Bexar County?
On a $300,000 home in City of San Antonio, Northside ISD, about $3,389 in the first year with the over-65 exemptions, before any school tax ceiling.
Sources
- Texas Tax Code §23.23 – Limitation on Appraised Value of Residence Homestead
- 2024 Actual Tax Rates / 2025 Actual Tax Rates chart (as of 12/05/2025)
- 2025 Tax Rates and Levies (school district, city, county, special district XLSX; version dated 01/28/2026)
- 2025 Actual Tax Rates / 2026 Actual Tax Rates chart
- Texas Tax Code §11.13 – Residence Homestead
- Property Tax Exemptions
- Texas Tax Code §11.26 – Limitation of School Tax on Homesteads of Elderly or Disabled
- Appraisal and Tax Limitations
- Texas Tax Code §31.02 – Delinquency Date
- Texas Tax Code §1.06 – Effect of Weekend, Holiday, or Office Closure
- Texas Tax Code §33.01 – Penalties and Interest
- Texas Tax Code §41.44 – Notice of Protest
- Texas Tax Code §23.01 – Appraisals Generally
- Texas Tax Code §11.43 – Application for Exemption
- Table B25103: Mortgage Status by Median Real Estate Taxes Paid (American Community Survey 2024 1-year)
- Table B25077: Median Value (Dollars), owner-occupied housing units (American Community Survey 2024 1-year)
- Online Services Portal