What does the Texas property tax calculator estimate?
The Texas property tax calculator estimates an annual property tax bill by multiplying taxable value by the combined local tax rate. The result is a planning estimate, not a tax bill or filing calculation.
| Calculator input | Enter |
|---|---|
| Appraised property value | $_____ |
| Total exemptions | $_____ |
| Combined local tax rate | _____% |
Estimated taxable value: Appraised value − exemptions
Estimated annual property tax: Taxable value × tax rate
Estimated monthly amount: Annual estimate ÷ 12
Enter the values from your appraisal notice and official local taxing-unit records. Use the combined rate for every applicable county, city, school district and special district, rather than a statewide rate, because Texas does not impose a state property tax.
The explanation below defines each calculator field.
What do the calculator inputs and results mean?
The Texas property tax calculator uses three inputs: appraised value, exemptions and the combined local property tax rate. The county appraisal district generally determines the appraised value.
Applicable exemptions reduce the value subject to tax.
The calculator subtracts the entered exemptions from the appraised value to produce an estimated taxable value. It then applies the combined rate and displays annual and monthly estimates.
The monthly estimate can help with budgeting, but it is not an escrow quote from a mortgage servicer.
A low estimate may result from a lower taxable value or fewer taxing units. A mid-range estimate may reflect a typical combination of local jurisdictions.
A high estimate may result from a higher taxable value or combined rate. These classifications provide context; they are not official Texas bands.
The methodology below explains the calculation.
How is Texas property tax calculated?
Texas property tax is calculated using the formula Taxable Value × Tax Rate = Estimated Property Tax. For this Texas property tax calculator, taxable value equals the entered appraised value minus the entered exemption amount.
The calculator treats a negative result as zero.
Local taxing units set property tax rates, while county appraisal districts determine taxable property values. The Texas Comptroller’s property tax system basics explains these separate responsibilities.
The calculator converts the percentage rate to decimal form before multiplication and rounds the final dollar estimate to the nearest cent.
This methodology was updated on August 8, 2026. The calculator does not determine exemption eligibility, apply appraisal caps automatically, model overlapping values that differ by taxing unit, calculate penalties or interest, or predict a future appraisal.
The worked example shows each step of the formula.
What is a worked example of the calculation?
This worked example shows how the Texas property tax calculator converts entered values into an estimate. Assume a Texas home has an appraised value of $350,000, entered exemptions of $100,000 and a hypothetical combined local rate of 2.10%.
- The calculator subtracts $100,000 from $350,000, producing an estimated taxable value of $250,000.
- It converts 2.10% to 0.021.
- It multiplies $250,000 by 0.021, producing an estimated annual property tax of $5,250.
- It divides $5,250 by 12, producing an estimated monthly amount of $437.50.
This example uses an illustrative rate, not a rate assigned to Houston or any other locality. Verify the actual taxing units, taxable values and adopted rates in official local records.
The frequently asked questions below explain accuracy, privacy and next actions.
Frequently asked questions
The Texas property tax calculator addresses common questions about estimate quality, assumptions, data handling and what to do after reviewing the result.
Is this calculator accurate?
The Texas property tax calculator is accurate only to the extent that its inputs match current official records. A low-confidence result uses an assumed rate.
A medium-confidence result uses a recent combined rate. A high-confidence result uses current taxable values and adopted rates for every applicable taxing unit.
Does the calculator include homestead exemptions?
The Texas property tax calculator includes only the exemption amount you enter. It does not determine whether you qualify for a residence homestead, age-based, disability, veteran or other exemption.
The county appraisal district determines local exemption eligibility.
Does the calculator store my information?
This Texas property tax calculator should not be treated as a secure channel for confidential tax records. Enter only the numbers required for the estimate, and review the site’s published privacy notice for its data-handling terms.
What should I do if the estimate looks too high?
Compare the Texas property tax calculator inputs with your appraisal notice and tax records. Then check your exemption status and applicable taxing units.
The Texas Comptroller’s Property Tax Assistance Division provides official guidance on the property tax system. Your county appraisal district handles local appraisal questions and protests.
Use the Texas property tax calculator to establish a planning estimate, then verify its assumptions with the responsible local authorities before budgeting, paying a bill or considering an appeal.