What the 2025 Texas Legislature Actually Changed About Your Houston Property Tax Bill
The session ended, the bills passed, and HCAD is now setting your 2026 values. Here's what the relief looks like in real Houston dollars — and where it quietly disappears.
The session ended, the bills passed, and HCAD is now setting your 2026 values. Here’s what the relief looks like in real Houston dollars — and where it quietly disappears.
The 89th Texas Legislature adjourned in June 2025 with property tax relief as its marquee accomplishment. The coverage since has been relentless and, for the most part, not very useful. You’ve read the press releases. You’ve seen the signing ceremony. What you probably haven’t seen is a line-by-line accounting of what your actual Harris County tax statement looks like in 2026 under the new law versus the old one.
This piece does that math. It also covers several things most statewide coverage has skipped entirely: whether a November 2025 constitutional amendment vote is still required before some provisions take effect; the HCAD appraisal cycle that can quietly claw back whatever the legislature just gave you; the MUD tax stack that outer-ring Houston homeowners carry and that the new law barely touches; and the specific categories of Harris County residents — renters, seniors under a school tax freeze, recent buyers who missed the exemption filing window — for whom the legislative session changed nothing.
Read this before your April 2026 HCAD notice arrives.
What the 89th Legislature Actually Passed, and What’s Still Conditional
The headline legislation increases the homestead exemption from the existing $100,000. That’s the Prop 4 exemption Harris County voters ratified in November 2023, which applies against school district maintenance and operations (M&O) taxes.
CityDesk Houston is continuing to verify the exact enrolled bill number and the final dollar amount of the new exemption against signed legislation. The session ran through June 2, 2025, and the enrolled text is the authoritative source. Don’t rely on any figure — including those circulating in press coverage — until confirmed against the enrolled bill or the Texas Legislature Online at capitol.texas.gov.
If you voted for the $100,000 exemption in November 2023, you might assume the current session just built on that. It did, but they’re separate actions, and conflating them will scramble your math. Prop 4 was a constitutional amendment Texas voters ratified that raised the prior $40,000 exemption to $100,000 and compressed school M&O rates. The 89th Legislature’s action is the next layer on top of it.
Here’s the procedural caveat most coverage has buried: if the increased exemption requires an amendment to the Texas Constitution — which CityDesk Houston has not yet confirmed against the enrolled bill text — then what the legislature passed is not self-executing. It would need ratification by Texas voters in a November 2025 constitutional amendment election before appearing on 2026 tax statements. The legislature passes the language; the voters make it law. Harris County homeowners should check the ballot status of this provision at the Texas Secretary of State’s office before November, since proposition numbering is assigned after the session ends.
CityDesk Houston will update this piece with the confirmed bill number, final exemption amount, and voter ratification status as soon as that information is verified.
The Dollar Math on a Houston Home
The exemption applies to your school district M&O taxable value. Not to your entire tax bill. This distinction is almost universally ignored in statewide coverage, and it matters.
When you hear “property tax relief,” most people picture a reduction in the total amount owed. That’s not exactly what this does. The legislature’s exemption increase removes a set dollar amount of taxable value from your school district M&O assessment. That reduction is then multiplied by your school district’s M&O rate to produce the savings on that one line. The same reduction can flow through to other taxing entities — Harris County, the City of Houston, Harris Health — if their exemption policies track the state homestead. But not every entity automatically raises its exemption when the state does. Some defer. Some pass. This creates real variation, block by block, in what the new law actually saves you.
CityDesk Houston has not confirmed the exact 2025 adopted rates for HISD, Harris County, the City of Houston, or Harris Health against each entity’s final adopted budget before publication. We’re not publishing a dollar-specific table for your 2026 bill until those rates and the final enrolled exemption amount are verified. Illustrative calculations built on unverified inputs would give false precision to a number you’d actually rely on, and that’s worse than no number at all. When your HCAD notice arrives in mid-April 2026, rebuild the math yourself using your certified appraised value and each entity’s adopted 2026 rate, which will be on their respective websites.
What we can tell you structurally: the savings on your school district line equal the dollar increase in your exemption multiplied by your school district’s M&O rate. Each additional entity whose exemption tracks the homestead adds a further reduction at that entity’s rate. The combined total across all entities is the number that matters. We’ll publish that calculation with verified figures as soon as they’re available.
The Flat-Exemption Problem
Here’s a structural feature of the new law that nobody in Austin is eager to explain clearly: a flat dollar exemption saves every homeowner the same nominal amount, regardless of what their home is worth.
Whatever the dollar increase in the exemption turns out to be, it saves the owner of a $320,000 home in Alief the exact same dollar amount as it saves the owner of a $600,000 bungalow in Montrose. In both cases, the same chunk of taxable value is removed from the school district M&O roll. The proportional impact is very different.
For a homeowner in Alief where the total tax bill is lower, those savings represent a meaningfully larger share of the annual burden. For a homeowner in Montrose or Timbergrove where the total bill runs substantially higher, the same dollar savings are proportionally smaller. This isn’t a criticism of the policy — a flat exemption is administratively simpler than a percentage-based one. But it is information homeowners in higher-value neighborhoods need when calibrating expectations.
The places where the flat exemption is most meaningful relative to total burden: lower-to-middle-value neighborhoods like Alief, Acres Homes, Kashmere Gardens. The places where it is least meaningful: fast-appreciating inner-loop corridors. If you live in one of those neighborhoods and have been reading that this law delivers “meaningful relief,” the law does help. The help is just proportionally smaller than the headlines suggest — and in some appreciating neighborhoods, it may be smaller still once HCAD weighs in.
The 2026 HCAD Value Wildcard
The legislature controls the exemption. It does not control what HCAD decides your home is worth on January 1, 2026. This is where a lot of homeowners are going to get a rude surprise next April.
HCAD is an independent appraisal district that sets values based on market data. In recent cycles it posted double-digit percentage increases across large swaths of Harris County. Increases moderated in 2024 and 2025 but didn’t stop.
Here’s the scenario your estimated savings number doesn’t account for: if HCAD raises your appraised value in the spring 2026 cycle, that increase partially or entirely offsets the benefit of the larger exemption. At some rate of appreciation, the new exemption’s additional benefit is consumed entirely and you’re paying essentially the same bill as under the old law. This already happened to many Harris County homeowners between 2023 and 2024, when Prop 4’s $100,000 exemption was largely absorbed by rising appraised values. It can happen again.
Strong appreciation in a single cycle can absorb a significant portion of whatever dollar relief the exemption provides. Homeowners in fast-appreciating corridors — the Energy Corridor, the Tomball-Spring area, anywhere along the Katy Freeway — should not treat the legislative savings figure as a guaranteed reduction on their 2026 bill. The exemption may be more than offset by HCAD’s January 2026 value determination.
Your appraisal notice arrives in mid-April 2026. The protest deadline is May 15. Do not assume the notice reflects a neutral continuation of your 2025 value. If you see a jump of more than 10 percent and comparable sales in your neighborhood don’t support it, you have grounds to protest.
One additional complication: homeowners in Harris County ZIP codes affected by Hurricane Beryl in July 2024 who applied for disaster reappraisal exemptions may see their 2026 assessments adjusted in ways that interact unpredictably with the new exemption calculation. HCAD has disaster reappraisal authority. If you filed a Beryl-related disaster exemption application and haven’t received a final determination, call HCAD directly before assuming your 2026 base value.
Appraisal Caps in 2026
The 10 percent annual homestead appraisal cap is one of the most misunderstood features of Texas property tax law, and the 89th Legislature has generated a fresh round of confusion about it. The cap is not new. It has been in place for decades, and it limits how much HCAD can raise the appraised value of a homesteaded property in any single year. Not the tax rate, not the bill itself. Just the appraised value. It doesn’t lower anyone’s tax bill on its own.
Who it actually protects: long-tenured homeowners in fast-appreciating neighborhoods. If you bought your Near Northside bungalow in 2015 for $180,000 and it’s now worth considerably more, your homestead cap has been compressing your taxable value for a decade. Your assessed value is meaningfully lower than market. That’s a genuine and substantial protection — probably worth more to most of those homeowners than anything the 89th Legislature just did.
Who it doesn’t protect: buyers who purchased in 2024 or 2025. When a property sells, HCAD resets the appraised value to market in the year following the sale. New buyers enter at or near full market value and the cap starts accumulating from zero. If you bought in the East End or the Second Ward in 2024, your 2026 assessment starts from close to that purchase price. You’ll benefit from a decade of capped appreciation starting now, but it doesn’t change what HCAD comes at you with next spring.
Rental homes, small investment properties, duplexes — these have no cap under current law and can be reassessed to full market value annually. CityDesk Houston is continuing to verify whether any change to this provision passed in final form before publishing a definitive account. Landlords and small investment property owners should check with a property tax consultant or the Texas Comptroller’s office for current guidance.
Who the New Law Doesn’t Help
Here are the specific Houston residents for whom the 89th Legislature’s property tax work produced no benefit.
Renters. The homestead exemption applies to owner-occupied property only. Whether landlords pass savings through in the form of lower rents is speculative and, honestly, unlikely to be traceable at the individual level. Houston apartment rents are set by what the market will bear — not by what your landlord’s tax bill happens to be. There’s no mechanism that reliably connects a modest tax reduction to your monthly rent.
Seniors under an over-65 school tax freeze. Texas law allows homeowners 65 and older to freeze their school district tax bill at the level it was when they first qualified. If your frozen bill is already below what you’d owe under the new higher exemption calculation, raising the exemption produces no additional savings. You’re already floored. This affects a meaningful number of long-tenured Houston homeowners in the central city and inner suburbs who’ve been on a freeze for years — and who may be reading coverage about “historic relief” that simply doesn’t apply to them.
Investment property owners and landlords. The homestead exemption doesn’t apply to property that isn’t owner-occupied as a primary residence. None of these changes affect your tax burden directly if you own rental houses or small commercial property in Harris County.
Recent buyers who haven’t filed their homestead exemption. This one is actionable. If you bought a home in Harris County in 2024 or 2025 — in Katy, Cypress, Pearland, League City, inside the Loop, anywhere — and you have not filed a homestead exemption with HCAD, you are not receiving the exemption. You’re paying on full appraised value. The exemption is not automatic. You have to file.
Go to hcad.org, look up your property, and confirm an exemption is on file. If it isn’t, file immediately using the online portal at hcad.org/exemptions. The exemption must be in place before the January 1, 2026 valuation date to apply to your 2026 bill. This is the single most common missed tax benefit among Houston-area homeowners, and it’s one of several property tax exemptions Houston homeowners often miss beyond the standard homestead filing. Title companies and real estate agents don’t always flag it because it’s not their legal responsibility. It’s yours. Not filing costs real money every year.
MUD Homeowners and the Tax Stack the Relief Barely Touches
Homeowners in unincorporated Harris County served by Municipal Utility Districts — large portions of Katy, Kingwood, and Cypress — carry a tax stack that looks nothing like what a homeowner inside the city pays. On top of school, county, and hospital district rates, they pay a separate MUD tax that typically runs between $0.50 and $1.20 per $100 of taxable value, depending on the district. Newer MUDs in western Harris County often sit at the high end of that range while they’re paying down the infrastructure bonds that funded the subdivision’s water lines, drainage, and roads in the first place.
The homestead exemption increase targets school district M&O. MUD taxes are a separate line on your statement, levied by a separate governmental entity, and they get nothing from this change. For a homeowner in a high-rate MUD, that single line can exceed the annual dollar savings from the new exemption. The rate is driven by bond debt specific to your district, and it will not go down because Austin changed the homestead exemption.
That doesn’t make the exemption savings worthless to MUD homeowners. It means that for outer-ring residents, the year-over-year change in their MUD rate often matters more to their total bill than the new exemption does — and most of them have no idea what that rate is until they open the statement.
Find your district’s name on the HCAD tax statement and attend the MUD board’s budget meeting. It’s public, it’s usually attended by almost no one, and the rate set there affects your bill more than what just passed in Austin. You can request the district’s financial statements before the meeting. If debt service is rising, your rate likely will too.
The November 2025 Ballot
If provisions of the new legislation require constitutional amendment ratification — which CityDesk Houston has flagged for verification — then Harris County homeowners who want the higher exemption on their 2026 tax statement need to vote yes on the relevant proposition in November 2025. This is not a formality. Texas voters have rejected constitutional amendments before. A majority “no” result statewide means the exemption reverts to $100,000 for 2026. The legislature cannot override voters on a constitutional amendment. That’s the deal.
Verify the exact proposition number and ballot language through the Texas Secretary of State’s office as the election approaches. Proposition numbering is assigned after the legislative session and can shift after referral.
What to Do Before Your 2026 HCAD Notice Arrives
Verify your homestead exemption is on file now. Go to hcad.org, enter your address or account number, and confirm a homestead exemption is listed. If you bought in 2024 or 2025 and it’s not showing, file immediately at hcad.org/exemptions. This is especially critical for new buyers in Katy, Cypress, Pearland, and League City, where title companies routinely don’t file on your behalf.
Know when your notice arrives. HCAD appraisal notices go out in mid-April 2026. Open it the day it arrives — don’t set it aside. Compare the appraised value to what you paid, what comparable homes in your neighborhood sold for recently, and what your prior year value was. Write down the increase percentage. If it’s more than 12 percent and nearby sales don’t support it, you have grounds to protest.
The protest deadline is May 15, 2026, or 30 days after the notice date, whichever is later. You can file online through HCAD’s iFile portal without hiring anyone. Bring comparable sales data. Recent sales of similar homes within half a mile are the most persuasive evidence. You don’t need a lawyer or a professional appraiser, though either can help if the dollar amount justifies the cost. For a fuller breakdown of how to challenge your assessment, our guide to protesting your Harris County property tax appraisal in 2026 walks through the iFile process and what evidence actually moves an ARB panel.
Know which office handles what. HCAD sets your appraised value. It does not collect your taxes. These are two separate agencies, and taxpayers mix them up constantly — calling the tax office to dispute a value, calling HCAD about a payment. Go to the right window.
For questions about your assessed value, exemption status, or to file a protest: Harris County Appraisal District 13013 Northwest Freeway, Houston, TX 77040 (713) 957-7800 / hcad.org
For questions about your tax bill, payment, or installment plans: Harris County Tax Assessor-Collector 1001 Preston St., Houston, TX 77002 (713) 274-8000
If November 2025 ballot ratification is required, vote. Confirm your registration is current with Harris County Elections before the applicable deadline.
For a typical Houston homeowner inside the city: if the new exemption is ratified and your appraised value stays flat, you will see a real reduction on your 2026 statement. The dollar amount depends on the final confirmed exemption figure and your jurisdiction’s adopted rates, which CityDesk Houston will publish once verified. For context on how this fits the broader landscape of what homeowners owe and own in this market, see our home & property coverage.
That savings is real. It’s also not guaranteed, not evenly distributed across the city, and potentially offset by what HCAD decides your home is worth in the spring. The legislature gave you something. Whether it shows up in full on your actual bill comes down to three things Austin doesn’t control: how Texas voters vote in November if ratification is required, what HCAD decides your home is worth in January, and whether you filed your homestead exemption.
Two of those three are entirely within your control. Worth handling before April.
CityDesk Houston will update this piece with verified figures — enrolled bill number, final exemption amount, confirmed tax rates, and November 2025 election results — as each becomes available. The next planned update follows HCAD’s certification of 2026 appraisal notices in mid-April 2026.
For more local coverage, explore our Legal & Finance section.
