The San Antonio property tax estimator gives you a quick, realistic estimate of your annual and monthly property-tax bill in Bexar County. It bundles the city, county, school-district and special-district levies into a single combined effective rate and lets you apply the Texas homestead exemption.
How it works
San Antonio property tax is charged on the appraised value set by the Bexar Appraisal District. Multiple taxing units stack their rates onto the same parcel — the City of San Antonio, Bexar County, your school district, the river authority, ACCD and others. Added together, the combined effective rate lands near 2.35% of value.
The Texas homestead exemption reduces taxable value before the rate is applied. The headline component is the school-district exemption of $100,000 on an owner-occupied primary residence:
taxable value = appraised value − homestead exemption
annual tax = taxable value × (effective rate ÷ 100)Worked example
A $320,000 home with the homestead exemption has a taxable value of $320,000 − $100,000 = $220,000. At the 2.35% combined rate the annual tax is $220,000 × 0.0235 = $5,170, or about $431/month in escrow. Without the exemption the same home would be taxed on the full $320,000 — roughly $7,520/year, showing how valuable the homestead is.
Tips
- File for your homestead. New owners must apply once with the Bexar Appraisal District; the exemption then renews automatically.
- Watch the 10% cap. Your taxable value can rise at most 10% per year on a homestead, even if market value jumps more.
- This estimate uses an average combined rate; your exact rate depends on your school district and special units. All math runs in your browser.