Homestead math that keeps the appraisal cap and exemption separate.
Calculate taxable value, exemption savings, or the 10% appraisal cap. Every input and step stays visible, including new improvements.
Cap first. Exemption second. Rate last. Find the appraised value, subtract the applicable exemption to get taxable value, then divide by 100 and multiply by the rate.
When the 10% cap is part of the question, calculate the capped appraised value before any exemption.
The exemption reduces value subject to that taxing unit's rate. It is not a tax credit.
Texas rates are stated as dollars of tax per $100 of taxable value.
Calculate school, city, county, and special-district taxes separately when their taxable values differ.
Choose the protection you need to calculate.
The exemption and appraisal cap are separate protections. This choice keeps their inputs in the right order.
Use the appraised value after any applicable appraisal cap.
Use one taxing unit, or combine rates only when the same taxable value applies to all of them.
Subtract the exemption from appraised value before applying the tax rate.
Divide taxable value by 100, then multiply by the rate. Do not divide by 1,000 unless a question uses mills.
A $140,000 exemption does not erase $140,000 of tax. It removes $140,000 from the value exposed to that taxing unit's rate.
School, city, county, and special-district exemptions can differ. Calculate each unit separately when its taxable value differs.
The calculator keeps full precision and rounds displayed dollar amounts to the nearest cent. This is an arithmetic estimate for one taxable-value setup, not a tax bill or eligibility decision.
Email this calculation for later review.
Keep the value setup, formulas, result, and exam traps together.
Try five homestead traps without the calculator.
A school-district calculation uses a $300,000 appraised value and a $140,000 homestead exemption. What is the taxable value before the rate is applied?
Choose the right starting value.
The exemption and appraisal cap use different starting points.
You already have the appraised value
Use Exemption savings. Enter the appraised value shown after any applicable cap, subtract the exemption, and apply the rate.
You have market value and last year's appraised value
Use 10% cap plus exemption. The calculator finds the lower of market value or the statutory cap amount, then subtracts the exemption.
You are checking a live tax bill
Use the exemption and rate for one taxing unit. Combine rates only when all included units use the same taxable value.
Three setups worth knowing cold.
Current Texas rules are labeled separately from exam-supplied amounts and example rates.
$300,000 appraised value, $140,000 exemption, example $1.00 rate
The exemption reduces annual tax by $1,400 at this example rate. The $140,000 amount is current; the $1.00 rate is only an arithmetic example.
$310,000 appraised value, $40,000 exemption, $1.95 rate
The exemption reduces the annual tax by $780. On the exam, use the exemption amount stated in the question.
$250,000 prior appraisal, $300,000 market, no new improvements
At an example $1.00 rate, the cap reduces tax by $250 and the exemption reduces it by another $1,400 versus a market-value baseline.
Four details that protect the answer.
Cap first, exemption second
The appraisal cap determines appraised value. The exemption is then subtracted to reach taxable value.
Market value still matters
The capped appraised value cannot exceed market value. Use the lower of market value or the statutory cap amount.
Add only qualifying new improvements
New improvements are added after the 10% increase. Ordinary repairs and maintenance do not qualify under this rule.
The cap does not begin immediately
The cap generally takes effect January 1 of the tax year after the owner first qualifies the property for a residence-homestead exemption.
Connect homestead rules to the rest of the math.
What is the Texas school-district homestead exemption in 2026?+
The mandatory general residence-homestead exemption for school districts is $140,000. A home appraised at $300,000 would therefore have a $160,000 taxable value for that school-district calculation before any other applicable exemption.
How do I calculate Texas homestead exemption savings?+
Subtract the exemption from appraised value to find taxable value. For the tax reduction, divide the exemption by 100 and multiply by the tax rate per $100. A $140,000 exemption at $1.00 per $100 reduces annual tax by $1,400.
What is the exact Texas 10% homestead appraisal-cap formula?+
Use the lower of current market value or the sum of the prior year's appraised value, 10% of that prior appraised value, and the market value of qualifying new improvements. The exemption is subtracted only after this capped appraised value is found.
When does the Texas homestead appraisal cap begin?+
The cap generally takes effect January 1 of the tax year after the owner first qualifies the property for a residence-homestead exemption. It is not automatically available for the first year of qualification.
What counts as a new improvement for the 10% cap?+
Texas law describes a new improvement as an improvement made after the most recent appraisal that increases market value and was not included in the prior year's appraised value. Ordinary repairs and maintenance do not count. Certain replacement structures after casualty, wind, or water damage are also excluded from the definition.
Are additional Texas homestead exemptions available?+
Yes. School districts must provide an additional $60,000 exemption for qualifying homeowners age 65 or older or disabled. Local-option exemptions and other specialized exemptions may also apply. Confirm eligibility and amounts with the county appraisal district.
Can I use one combined rate for a live Texas property-tax bill?+
Only when every rate in the combined total applies to the same taxable value. School, city, county, and special-district exemptions can differ, so calculate each unit separately when necessary and add the tax amounts.