Reading a Property Tax Bill in Austin

Almost every Austin property tax page explains the rate and stops. That leaves out the part that actually costs money, which is that the number on the seller's disclosure is often not the number you will pay, and the reason has nothing to do with the rate going up.

This page is about the arithmetic underneath. It is assembled from the Tax Code for the rules and from Travis County and the appraisal district for the figures, and every number below states the tax year it belongs to, because two of the biggest ones changed in 2025.

How this page is sourced, and why that matters

I did not write this from what I remember about Texas property tax, and there is a specific reason for that. The school district homestead exemption changed twice in three years. Working from memory would have put the previous figure on this page, stated confidently, and a reader would have built a budget on it.

So the rules come from the Tax Code (Chapter 11 and Chapter 23), the rates come from Travis County's own Truth in Taxation table, and the exemption amounts come from the appraisal district's published listing and are confirmed against the Comptroller. All six are linked. Every figure I computed rather than read was computed from those tables, and I have said which is which.

You are not taxed by one thing

There is no Austin property tax. There is a stack of separate governments, each setting its own rate, each with its own exemptions, and your bill is the sum.

Travis County's rate table lists 146 taxing entities. The appraisal district's exemption listing runs to 248, because it also carries public improvement districts, tax increment zones and a few disannexed areas. Among them are 97 municipal utility districts, 33 public improvement districts, 18 emergency services districts and 15 school districts.

A house inside the City of Austin and inside Austin ISD, with no MUD and no PID, sits under five of them. These are the adopted rates for tax year 2025, the most recent year with rates adopted:

Adopted rates, tax year 2025, dollars per $100 of taxable value, City of Austin address inside Austin ISD

Adopted rates, tax year 2025, dollars per $100 of taxable value, City of Austin address inside Austin ISD

Source	Rate	What it is
Austin ISD	0.925200	School. 45.2 percent of the combined rate on this stack.
City of Austin	0.524017	City. Absent outside the city limits.
Travis County	0.375845	County. Applies countywide.
Travis Central Health	0.118023	Hospital district. Often missed when people list their jurisdictions.
Austin Community College	0.103400	Junior college district.
Combined	2.046485	Per $100 of taxable value, and taxable value differs per jurisdiction.

That combined rate is 2.046485 per $100 of taxable value, which is assessed value after exemptions. The school district is 45.2 percent of it. Debt service across all five is 14.5 percent.

Two things follow. A rate quoted without naming the jurisdictions it includes is not a rate. And a house a mile away, outside the city or inside a MUD, is under a different stack entirely.

Market value, appraised value, assessed value, taxable value

Four different numbers, and the bill only uses the last one. They are defined in Section 1.04 of the Tax Code, and they chain in a fixed order.

Market value is "the price at which a property would transfer for cash or its equivalent under prevailing market conditions", exposed for sale for a reasonable time with both parties knowing the property's uses and restrictions.

Appraised value is "the value determined as provided by Chapter 23", which is where the homestead cap lives. This is the number the cap holds down.

Assessed value is "the amount determined by multiplying the appraised value by the applicable assessment ratio". Texas assesses at 100 percent, so in practice this equals the appraised value. It gets its own name because it is the term printed on your bill, and because the statute deducts exemptions from it rather than from the appraised value.

Taxable value is "the amount determined by deducting from assessed value the amount of any applicable partial exemption". This is what a tax rate is applied to, and it differs for every jurisdiction on the list above, because each one exempts a different amount.

Section 23.23(b) requires the chief appraiser to do both jobs at once. When appraising a residence homestead the appraiser shall "appraise the property at its market value" and "include in the appraisal records both the market value of the property and the amount computed under Subsection (a)(2)."

So the appraisal record carries the market value and, separately, a capped value, which for a long-held homestead can sit well below market.

The 10 percent cap, exactly

Section 23.23(a) says an appraisal office may increase the appraised value of a residence homestead to an amount not to exceed the lesser of the market value, or the sum of three things: 10 percent of the appraised value for the preceding year, the appraised value for the preceding year, and the market value of all new improvements.

Read as arithmetic: last year's appraised value, plus 10 percent of it, plus anything you built. Capped at market value, so if the market falls below the capped figure, the appraised value follows it down.

Three limits on what that protects.

It caps the appraised value, not the bill. Rates are adopted separately each year, so a capped value and a higher bill are entirely compatible.

It does not cover new improvements. Section 23.23(e) defines a new improvement as one that raises market value and was not in last year's appraised value, and it says the term "does not include repairs to or ordinary maintenance of an existing structure or the grounds."

And it only exists while someone qualifies for a homestead exemption on that property, which is the part that matters on a purchase.

What a sale does

This is the paragraph the rest of the page exists for. Section 23.23(c):

The limitation provided by Subsection (a) takes effect as to a residence homestead on January 1 of the tax year following the first tax year the owner qualifies the property for an exemption under Section 11.13. The limitation expires on January 1 of the first tax year that neither the owner of the property when the limitation took effect nor the owner's spouse or surviving spouse qualifies for an exemption under Section 11.13.

Two clauses, both load-bearing.

The seller's cap expires. It was attached to the seller qualifying, and when they stop, it goes. The appraised value is free to move to market value.

Your cap takes effect on January 1 of the tax year following the first year you qualify. Not on closing day, and not in your first year. You get the reset first and the protection afterwards.

There is a second gap on top of it. Section 11.42(f) lets a buyer who acquires after January 1 take a homestead exemption for the applicable portion of that year immediately on qualification, but only "if the preceding owner did not receive the same exemption for that tax year." If the seller already claimed it for the year you bought, you cannot claim it again on the same house in the same year. You wait for January 1.

The math, run

Take a house whose market value is $500,000, bought from an owner whose appraised value the cap had held at $400,000, in the City of Austin and Austin ISD. Tax year 2025 rates, and homestead exemptions as they stand in the appraisal district's current listing.

The same house at $500,000 market value, tax year 2025 rates, computed per jurisdiction

The same house at $500,000 market value, tax year 2025 rates, computed per jurisdiction

Source	Year	Per month	Why
Seller, last year	$6,071.18	$505.93	Appraised held at $400,000 by the cap, homestead exemption in place.
Buyer, year one	$10,232.43	$852.70	Cap expired, appraised at market $500,000, no homestead because the seller used it this year.
Buyer, year two	$7,914.09	$659.51	Same value and rates, homestead exemption now in place. The cap begins limiting increases from here.

The seller was paying $6,071.18. The buyer's first year, with the cap gone and the exemption unavailable because the seller used it, is $10,232.43. That is 1.69 times the seller's bill, and $346.77 more per month.

Nothing improper happened. No rate went up. The house did not change. The cap expired because it was never attached to the house, and the exemption was already spent for the year.

Year two, with a homestead exemption in place, the same house at the same value and the same rates would be $7,914.09, or $659.51 a month. The exemption is worth $2,318.34 a year here. From year three the cap starts limiting how fast the appraised value can climb.

Exemption amounts, and the two that changed

Every figure here is from the appraisal district's listing for tax year 2026 and agrees with the Comptroller's January 2026 publication and with the statute.

The school district homestead exemption under Section 11.13(b) is $140,000. It was $100,000 before Senate Bill 4 of the 89th Legislature, effective November 4, 2025. The additional school exemption for an owner who is disabled or 65 or older, under Section 11.13(c), is $60,000, raised by Senate Bill 23 in the same session.

The local option exemptions are a percentage, capped at 20 percent by Section 11.13(n), with a floor of $5,000. For this stack: City of Austin 20 percent, Travis County 20 percent, Travis Central Health 20 percent, and Austin Community College 1 percent. That last one is the kind of detail that gets assumed rather than checked.

Across all 248 entities in the listing, 50 offer a general homestead exemption at all, and 21 of those offer the maximum 20 percent.

You cannot know your first-year bill at closing

On the date this page was written, 4 of the 146 entities in Travis County's rate table had adopted a tax year 2026 rate. The other 142 had not.

Texas taxing units adopt rates in the late summer and autumn, after budgets are set. If you close in the spring, the rates that will produce your first bill do not exist yet. Anyone who quotes you an exact first-year figure before those adoptions is quoting last year's rates against this year's value, which is a reasonable estimate and is not a number.

The estimate you can defend is the one you build yourself: current appraised value, current exemptions, last adopted rates, and an explicit note that the rates are the part still open.

How to read one specific address

1. Search the address in Travis Central Appraisal District's property search, which takes an owner name, a street address, or an account number and opens that property's account page. The jurisdiction list is on it, alongside the exemptions currently applied. That list, not the neighborhood name, tells you which governments tax it and whether a MUD or a PID is among them.

2. Read the market value and the appraised value as two separate figures. If they differ, the gap is the seller's cap, and that gap is what disappears when you buy.

3. Look up each jurisdiction's adopted rate in Travis County's Truth in Taxation table. Note which tax year you are reading, and that the current calendar year may show 0.000000 until rates are adopted.

4. Check each jurisdiction's exemption in the appraisal district's exemption listing. They are not the same percentage, and one of them on this stack is 1 percent.

5. Ask whether the seller claimed the homestead exemption for the year you are buying. If they did, Section 11.42(f) means you do not get it on that house until January 1.

6. Compute each jurisdiction separately and add them. There is no shortcut, because the exemption differs per jurisdiction.

Why your bill will differ from the seller's

An exemption attaches to an owner. It does not run with the house. The seller's homestead exemption, and any over-65 or disability exemption they held, ends when their ownership does, and none of it transfers to you.

That is why the seller's current bill is a poor guide to yours. A long-held homestead can sit under a capped appraised value and a full set of exemptions, producing a figure that is accurate for them and describes a set of circumstances you will not inherit.

What the closing figure actually is

Taxes for the year of sale are prorated through the closing date. The TREC One to Four Family Residential Contract sets this out in Paragraph 13 of form 20-19, and two sentences in it are the ones that matter:

The tax proration may be calculated taking into consideration any change in exemptions that will affect the current year's taxes. If taxes for the current year vary from the amount prorated at closing, the parties shall adjust the prorations when tax statements for the current year are available.

Read that twice, because it answers the question people actually have. The number used at closing is an estimate. The contract says so by providing for what happens when it turns out to be wrong.

It also means a competent proration can already account for the exemption change rather than copying the seller's figure forward. Whether it does is worth asking about before you sign.

The gap has a home

If the eventual bill differs from the amount prorated at closing, that difference is a proration issue between you and the seller for the sale year, and the contract obliges both parties to adjust once the statements exist. It is a settled mechanism with a name.

What you do afterwards

Once the house is yours, file your own homestead exemption, along with any other exemption you qualify for. From the January 1 after you qualify, the appraisal cap begins to apply to you. You can also protest the appraised value annually, which is a separate lever from exemptions and works on the other half of the arithmetic.

Year two, and the escrow adjustment

If your taxes are paid through an escrow account, the lender estimates the year's tax and insurance, collects a twelfth of it each month, and pays the bills when they arrive. In your first year that estimate is built before the real number exists, so it is an estimate of an estimate.

This is a scheduled mechanism rather than an event. Federal rules under Regulation X require the servicer to run an escrow account analysis at the completion of each escrow computation year and send an annual statement within 30 days. Your payment is re-set at that point every year, whichever direction the numbers moved.

Where the analysis shows a shortage of one month's payment or more, the servicer may require it to be repaid in equal monthly payments over at least a 12 month period. So a shortfall arrives spread across the following year alongside the new monthly figure, and the size of the change is usually modest.

Lender estimates are generally reasonable. When one lands well off, the fix is a conversation with your lender and your agent, who can compare the escrow analysis against the appraisal record and the adopted rates and establish which input was wrong. That is ordinary annual maintenance on a mortgage.

Where this gets softened

"Taxes are about 2.2 percent" is close to the combined rate here and skips that the rate applies to taxable value, which is not the price you paid.

"You will get the homestead exemption" is true eventually and may not be true in your first year, for a reason that is a statute rather than a technicality.

"The cap protects you" describes something real that begins on January 1 of the year after you first qualify, and that never applied to you in your first year.

"The seller pays about six thousand" is usually accurate and usually irrelevant, because the number attached to the seller and not to the house.

None of that requires anyone to lie. The higher figure lowers what a buyer qualifies for at a given price, so a page written to move a house is written with the lower one. Knowing which direction the pressure runs tells you which sentence to check.

What buyers ask

Will my taxes really go up after I buy?

The rate does not change because you bought. The taxable value usually does. The seller's cap expires under Section 23.23(c), the appraised value can move to market, and if the seller already used the homestead exemption that year you cannot use it again until January 1.

When does the 10 percent cap start protecting me?

January 1 of the tax year following the first tax year you qualify for a homestead exemption on the property, per Section 23.23(c). It does not apply in your first year.

How much is the homestead exemption worth?

It depends on the jurisdictions taxing your address, because each sets its own. On the five-jurisdiction stack described here, at a $500,000 value and tax year 2025 rates, the difference between having it and not having it is $2,318.34 for the year.

Can I get the exemption in the year I buy?

Section 11.42(f) allows it for the applicable portion of the year immediately on qualification, but only if the previous owner did not receive the same exemption for that tax year. Section 11.43(d) requires the application before the first anniversary of the date you acquired the property.

Why can nobody tell me my exact first-year bill?

Because the rates have not been adopted. On the date this page was written, 142 of the 146 taxing entities in Travis County had not set a tax year 2026 rate.

The honest part

The strongest thing on this page is not the arithmetic. It is that the Tax Code says out loud that the cap belongs to an owner rather than to a house, and that a buyer gets the reset before the protection. That is not hidden. It is one sentence in Section 23.23(c) that almost nobody reads before they sign.

What the public record does not settle is what to do about it. A larger first-year escrow, a lower price, or a different house are all answers, and which one is right depends on numbers this page cannot see. Anyone who answers that quickly is answering a different question.

Disclaimer

This is general information about how Texas property tax is assessed and how Travis County jurisdictions set rates and exemptions. It is not tax advice, legal advice, or an appraisal, and it is not a quote for any specific property. Rates are adopted annually and exemption amounts change by legislation. Confirm every figure against the appraisal district and the county for the address and tax year you care about.