Buyer Tools
San Antonio Property Tax Calculator
Estimate the annual Bexar County property tax on a home from its price, its school district, and its jurisdiction — using the county's 2025 adopted rates and each taxing unit's own homestead exemption. If you have the current annual tax bill for the address, enter it and the two figures are compared side by side.
Why a home's tax can change after it sells
Texas limits how fast a homestead's taxable value can rise, but that limitation belongs to the owner who claimed it, not to the house. Under Tex. Tax Code 23.23(c) the prior owner's limitation expires on January 1 of the tax year after a change of ownership, and the property is appraised at market value with no cap and no inherited exemption.
A homestead exemption works the same way. It belongs to the person who claimed it and ends with their ownership, so the current owner's bill can sit either above or below what the next owner is billed. An owner-occupant's exempted bill can understate it; a rental owner's unexempted bill can overstate it.
Where taxes are collected through an escrow account, the monthly amount is set from an estimate and reviewed periodically by the servicer. If an account turns out to be short, how that is handled is set by the loan servicer under its own rules. This page does not estimate escrow, and nothing here is an escrow analysis.
What the estimate below is
It is the annual county tax at the price you enter, with the exemptions you tell it to assume. It is not a bill, and it is not a comparison unless you give it a real bill to compare against.
Estimate the annual tax
Estimated annual property tax
Compared with the current bill you entered
No current annual tax bill was entered, so nothing has been compared. The figure above is an estimate of future tax on its own — it does not say whether the tax on this address will go up, go down, or stay the same. Enter the current annual bill to compare.
At the appraised value you entered
Where the estimated tax goes
Each taxing unit sets its own rate and its own exemption, so they cannot be collapsed into a single percentage. Effective rate on the purchase price: .
| Taxing unit | Rate per $100 | Exemption | Tax |
|---|
What this estimate covers, and what it does not
It covers Bexar County taxing units for property in the City of San Antonio or in unincorporated Bexar County, in all 12 Bexar County independent school districts.
- Other municipalities are not modelled. Universal City, Schertz, Cibolo, Live Oak, Converse, Selma, Helotes, Leon Valley, and the other incorporated cities in and around Bexar County each adopt their own rate.
- Emergency Services Districts, MUDs, and PIDs are not modelled and are not inferred from an address. If you have verified one on an actual notice, enter its rate in the optional field and it is added as a line you supplied.
- A school district outside Bexar County. If yours is not in the list, choose “My district is not listed” and the calculator will say so rather than leave a taxing unit out of the total.
- Over-65, disability, and disabled-veteran exemptions and ceilings, which change the result substantially.
- Counties other than Bexar. Parts of the San Antonio metro sit in Guadalupe, Comal, Wilson, Atascosa, Medina, and Kendall counties.
- Any loan, rate, payment, or escrow figure.
This is an estimate for comparing homes. It is not legal, tax, financial, or lending advice, it is not an appraisal, and it is not an escrow analysis. Appraised values, adopted rates, and exemptions are set by the appraisal district and the taxing units and change from year to year. Verify any figure you intend to rely on with the Bexar Appraisal District and the taxing units before acting on it.
Rates are pulled from Bexar County's official tax rates and exemptions page. Texas taxing units adopt new rates each fall, and this table is re-verified before the next tax year is quoted.
Common questions
Does the current owner's homestead exemption carry over to me?
No. It belongs to the owner who claimed it and ends with their ownership. That is also why their bill can mislead in either direction: an owner-occupant's exempted bill can understate what you are billed, and a rental owner's unexempted bill can overstate it.
Why does the calculator refuse to compare without a current bill?
Because a comparison needs a number that was observed rather than assumed. Without one, the page can estimate future tax but cannot tell you whether the tax on that address goes up or down, and showing a zero difference would state something it does not know.
Does filing a homestead exemption stop the increase?
It reduces taxable value and it starts a 10% annual cap on the homestead's appraised value going forward. It applies to the new market value rather than restoring a prior owner's capped value.
Is 2.27% the right rate to use for San Antonio?
That is roughly the combined rate before exemptions. Because each unit applies a different exemption, the effective rate on an owner-occupied home is lower. The calculator shows the effective rate for the values you enter.
Two houses at the same price had different tax bills. Why?
School district rates differ across the county, and a home in unincorporated Bexar County is not billed a city rate at all. Those two factors move the bill more than anything else on this page.
Can you tell me what my monthly payment will be?
No. This page estimates county property tax only. Velvet Realty Group is a real estate brokerage, not a lender, and does not quote rates, payments, or loan terms.
Looking at a specific house?
Send the address and we will pull its current assessment, its taxing units, and what the tax is likely to be after a sale.