Ask a relocating buyer what they know about Westlake taxes and most will say the same thing: Texas has no state income tax, so the math works in their favor. That's true as far as it goes. It's also the smaller half of the story.
The larger half runs through jurisdiction, and in the 78746 corridor jurisdiction doesn't track the way most newcomers assume. Two homes can sit less than a mile apart, carry the same Westlake name, feed the same schools, and still land on opposite sides of a tax line that changes the annual bill by thousands of dollars. That line has nothing to do with the house. It has everything to do with which city, which school district, and which stack of overlapping taxing entities claims that specific parcel.
If you're weighing Westlake against another Central Austin submarket, or weighing one Westlake street against the one behind it, the jurisdiction line deserves attention before the sale price does.
The Half of the Relocation Pitch Nobody Finishes
The pitch usually stops at "no income tax." For a buyer coming from a high-tax state, that sounds like a straightforward win. The state still collects, though. It just collects through the house instead of the paycheck, and how much it collects depends heavily on where inside Travis County that house happens to sit.
A homeowner in California under Prop 13 might pay something close to 1.1 percent on a home's assessed value. A comparable West Austin home in 2026 runs closer to 1.6 to 2.1 percent, depending on the address, before any homestead exemption is applied. That's not a rounding difference. On a multi-million dollar Westlake purchase, it's the difference between a manageable annual line item and one that reshapes the monthly budget.
Three Taxing Bodies, Not One Bill
Every property tax bill in this part of Austin is a composite, not a single number. The three components that move the most are the school district, the city, and the county, and each one is set independently by its own governing body.
Using the rates adopted for the 2025-26 cycle, the most recent full set of published figures, the gap between the two most common Westlake-area stacks looks roughly like this:
| Component | West Lake Hills / Eanes ISD stack | City of Austin / Austin ISD stack |
|---|---|---|
| School district | Eanes ISD, lower rate | Austin ISD, higher rate |
| City | City of West Lake Hills, a small municipal rate | City of Austin, a substantially larger municipal rate |
| County and other | Travis County, ACC, Central Health (same for both) | Travis County, ACC, Central Health (same for both) |
| Effective combined rate | Roughly 1.6 to 1.8 percent | Roughly 2.0 to 2.1 percent |
The school district line does the most damage or the most good, since it typically makes up more than half of the total bill. But the city line matters too. West Lake Hills and Rollingwood are their own incorporated cities with modest municipal rates. A home inside Austin's city limits, in a neighborhood like Tarrytown, carries the full City of Austin rate on top of Austin ISD. Same county, same community college district, very different math underneath.
A Zip Code Is Not a Tax Jurisdiction
Here's where it gets counterintuitive for anyone reading the 78746 zip code as a single, uniform market. It isn't one. Eanes ISD serves most of 78746 and meaningful portions of neighboring 78733, but the boundary lines don't always follow the streets the way you'd expect. Some blocks split between Eanes and Austin ISD with no visible marker separating them. Two houses that look identical from the curb, similar lot, similar age, similar view, can sit in entirely different tax and school jurisdictions.
That boundary doesn't just move the tax bill. It moves resale value too. Agents working this corridor regularly see nearly identical homes, one inside the Eanes line and one just outside it, sell for six-figure differences that have nothing to do with the house itself. The jurisdiction is doing the pricing, not the floor plan.
This is the piece a portal search can't show you. A listing photo doesn't disclose which side of an ISD boundary a lot sits on. Verifying school and tax jurisdiction for a specific parcel, not a general neighborhood name, is one of the first things worth confirming before you get attached to a house.
What the Gap Looks Like on a Real Number
Numbers make this concrete faster than percentages do. Using $1,000,000 of taxable value as a clean illustration: a home taxed under the West Lake Hills, Eanes ISD, Travis County stack lands around $16,000 a year. A home of identical taxable value inside Austin's city limits, taxed under Austin ISD, lands closer to $21,000. That's roughly a $4,900 annual gap on the same dollar of value, before either owner files an exemption.
Scale that to the taxable values Westlake actually trades at, often $2 million and above, and the gap widens toward something closer to $9,000 to $10,000 a year. On a 15 or 20 year hold, that's not a footnote. It's a number worth running before you decide which side of the river, or which side of the boundary, makes more sense for the way you plan to live and eventually sell.
Two Levers Worth Using Before and After You Close
None of this is fixed once you own the home. A few mechanisms shift the bill in a homeowner's favor, and they're easy to miss if nobody walks you through them at closing.
- The school-district homestead exemption stands at $140,000 of taxable value off the school portion of the bill for a primary residence as of 2026. File it as soon as the home becomes your primary residence.
- The 10 percent appraisal cap limits how much a homesteaded property's assessed value can rise in a single year, but it doesn't start the year you buy. It kicks in after the first full year of ownership, so year one is typically taxed at full market value.
- The protest window runs through May 15, or 30 days after your appraisal notice arrives, whichever lands later. Reviewing the annual notice rather than assuming last year's bill still applies is worth the ten minutes it takes.
None of these change which jurisdiction a home sits in. They do change what that jurisdiction actually costs you once you own the place.
Why This Is Worth Knowing Right Now
New construction inside the Eanes ISD boundary is rare enough that it's worth flagging when it happens. The Overlook at Westlake, a 48-home community from MileStone Community Builders priced from roughly $2.85 million to $5 million, is delivering move-ins in late 2026 and sits inside Eanes ISD. Because so little undeveloped land remains in this part of West Austin, a new-build option with confirmed jurisdiction, rather than a resale lot where the boundary needs verifying block by block, is a genuinely uncommon opportunity in this cycle.
For a relocating buyer trying to move quickly and confidently, that certainty is worth something on its own, separate from the finish-out or the floor plan.
A Few Questions Worth Asking Before You Write an Offer
Does the Westlake name always mean Eanes ISD? Not automatically. Most of 78746 and parts of 78733 fall inside Eanes ISD, but specific streets can fall outside it. Confirm jurisdiction for the exact parcel, not the neighborhood name.
Is Rollingwood taxed the same way as West Lake Hills? Both are incorporated cities inside Eanes ISD with their own modest municipal rates, but each city sets its own rate independently, so the totals aren't identical even though the structure is similar.
Should I expect my tax bill to match the seller's current bill? No. A long-time owner's bill is often held down by years of the homestead appraisal cap. Your bill resets closer to full market value in year one, so model off likely purchase price, not the number on the seller's disclosure.
Where This Leaves You
The sale price tells you what a Westlake home costs to buy. It doesn't tell you what it costs to hold, and that second number depends on a boundary line most buyers never think to ask about until the first tax bill arrives. Running that math before you fall in love with a specific street, not after, is the difference between a well-informed offer and an expensive surprise.
If you're comparing Westlake to Tarrytown, Barton Creek, or another Central Austin submarket and want the jurisdiction and tax picture confirmed for a specific address before you write an offer, Leslie Gossett can walk through the numbers with you street by street. Let's Connect.
