How to file a Texas property tax protest online yourself

Last updated 2026-07-10

What is a Texas property tax protest and who can file one?

A property tax protest is a written challenge to the value your county appraisal district (CAD) put on your property. Almost any owner in Texas can file one. The right comes from Chapter 41 of the Texas Tax Code, which says a property owner "is entitled to protest" a determination of the appraised value of the owner's property ^[1]. You don't need an attorney, a licensed agent, or a contingency firm. You need to file on time, then either settle early or show up.

The protest goes to your county's Appraisal Review Board (ARB), a panel that sits separate from the appraisal district. The ARB hears evidence from you and from the CAD, then sets the value. Most cases never reach that panel. They settle informally with a staff appraiser first.

Texas has 254 counties, and each one runs its own CAD and ARB. The statute is the same statewide. The online tools are not. Harris County (Houston) has one of the most built-out e-file systems in the state. Some rural counties still hand you a paper form, though most now take electronic protests too.

What is the deadline to protest a Texas property tax appraisal?

The deadline is May 15 of the tax year, or 30 days after the CAD mailed your Notice of Appraised Value, whichever is later ^[1]. If May 15 lands on a weekend or legal holiday, the deadline slides to the next business day.

The notice usually shows up in April. If yours arrives April 20, your 30-day window runs to May 20, five days past the May 15 floor. If you never got a notice and the district can confirm that, a narrow late-filing path exists, but you have to show good cause.

Here's what a lot of homeowners miss. If your appraised value didn't change from last year, the CAD may not send you a notice at all. You can still protest. You just have to do it by May 15. No notice does not mean no deadline.

Miss the date and you lose the right for that tax year. The ARB has almost no discretion to accept a late protest outside the narrow exceptions in Tax Code Section 41.44(b) ^[1]. Don't cut it close.

How do you find your county's online protest portal?

Every Texas CAD has a website, and the Texas Comptroller keeps a directory of all 254 of them at comptroller.texas.gov ^[2]. Find your county there, then look for a link labeled "Online Protest," "E-File," or "iFile."

Harris CAD runs a system called iFile at hcad.org. Travis CAD (Austin) uses an online protest portal at traviscad.org. Dallas, Tarrant, and Bexar counties have their own versions. If you own property in Bexar County, the Bexar Appraisal District portal sits at bcad.org. Homeowners north of Houston can start with our Montgomery County property tax walkthrough.

To log in or create an account, you need two things off your notice: your property's account number (sometimes called a CAD account number or parcel ID) and a unique PIN or access code the district assigns. Lost the notice? You can usually look up the account number by address on the CAD's property search page and request a new PIN by email or mail.

Once you're in, the portal walks you through picking the type of protest (value, unequal appraisal, or both), uploading evidence, and submitting. Save the confirmation number it gives you. That number is your proof the protest was filed on time.

What grounds can you use to protest your Texas property tax assessment?

Texas law gives you two main grounds under Tax Code Section 41.41 ^[1].

The first is market value. You believe the appraised value sits higher than what the property would sell for between a willing buyer and a willing seller. This is the common one. If your home is assessed at $420,000 but comparable homes on your street sold for $370,000 to $390,000, you have a market value argument.

The second is unequal appraisal. You believe your property is appraised at a higher percentage of market value than comparable properties nearby. This is the equity argument, and it carries real weight in Texas because the Tax Code protects it directly. Even if the district's number is close to market, you can still win if your neighbors' homes are assessed lower on a per-square-foot basis.

You can check both boxes when you file. Most seasoned DIY protesters do. It costs nothing extra and hands you two paths to a reduction.

A third, less common ground is an error in property characteristics. The CAD has your square footage wrong, counts a bathroom that doesn't exist, or still lists a shed you tore down. Fix the data and the reduction often follows automatically, no hearing needed.

What evidence do you need to win a Texas property tax protest?

Evidence is the whole game. A protest with no supporting documents almost always ends with the ARB upholding the CAD's value. Here's what moves the number.

For a market value protest, your strongest ammunition is recent sales of comparable properties (comps). "Recent" means closed sales in the 12 months before January 1 of the tax year. You want homes like yours in size, age, condition, and location. Free sources:

• Your county CAD's own sales data (usually searchable on the portal or downloadable as a spreadsheet)
• Zillow and Redfin sale histories (search sold homes within a half-mile)
• The county appraisal district's sales database, which many CADs publish as a downloadable file

For an unequal appraisal protest, you need the assessed values of comparable properties on the CAD's rolls, not their sale prices. Pull five to ten nearby homes of similar size and condition, compare their assessed value per square foot to yours, and present the median. Texas Tax Code Section 41.43 says the ARB must order a reduction if the appraisal exceeds the median appraisal of comparables by more than 10 percent (for property with an appraised value under $5 million) ^[1].

Photos help, especially for condition problems: foundation cracks, water damage, a roof at the end of its life, anything a mass appraisal model can't see. Interior photos work for ARB submissions even if the CAD's appraiser never set foot inside.

A recent independent appraisal is the strongest evidence you can bring, but it runs $300 to $600 for a residential property in most Texas markets. Only order one if you're fighting a large value and the math clearly pays for it.

Organize everything into a PDF or a simple slide deck. Most portals take PDF, JPEG, and common document formats. Keep the file under whatever cap the portal posts (Harris CAD, for example, limits uploads to 10 MB per file as of 2024 ^[5]).

How do you actually file the protest step by step on the portal?

Here's the sequence that works across most Texas county portals.

Step 1: Log in. Go to your CAD's website, find the iFile or Online Protest link, and enter your account number and PIN from the notice.

Step 2: Select protest grounds. Check "Incorrect appraised value" and/or "Value is unequal compared with other properties." If your property data is also wrong, add "Incorrect property description."

Step 3: Enter your opinion of value. You'll see a field asking what you think the correct value is. Put a specific dollar number, not a range. Base it on your comps. If your comps support $370,000, enter $370,000.

Step 4: Upload evidence. Attach your comp data, photos, and supporting documents. Label files clearly (for example, "Comp_1_123MainSt_sold_Dec2023.pdf").

Step 5: Submit and save your confirmation. The system shows a confirmation number and often emails one. Screenshot it. Save the email. This is your proof of timely filing.

Step 6: Watch for an informal hearing notice. Most CADs schedule an informal conference with an appraiser before the formal ARB hearing. This is where most cases settle. The appraiser reviews your evidence and may offer a reduction on the spot. Accept or reject. Reject, and the formal ARB hearing proceeds.

Step 7: If you go to the formal ARB hearing, you can attend in person or, at many districts, by video. Present your evidence calmly. The ARB hears the CAD's appraiser first, then you. Keep it under 10 minutes. Stick to the numbers.

The Texas Comptroller's Property Taxpayer Remedies guide, updated every year, walks through each of these rights in plain language and is free to download ^[2].

What happens at the informal hearing and should you settle?

The informal hearing is a phone call or a short in-person or video meeting with a CAD staff appraiser. It's not the ARB. No sworn testimony. The appraiser pulls up your property and your evidence, compares it to the district's, and tells you whether they'll offer a reduction.

Settle if the offer is fair. Say the district's value is $420,000, the appraiser offers $390,000, and your comps support $370,000 to $385,000. Think hard before walking away. Another $10,000 to $15,000 at the ARB is possible but never guaranteed, and a formal hearing tacks on another two to six weeks.

Don't settle just because the appraiser sounds confident. Appraisers negotiate for a living. Their first offer is rarely their best. If your evidence is solid and the gap is real, ask: "Is there any more flexibility here given the comps I submitted?" The worst answer is no.

If you can't agree, the informal session ends and you get a formal ARB hearing date. You lose nothing by going except time. The ARB cannot raise your value above the district's value as of January 1 ^[8].

How do you find comparable sales to support your protest?

Pulling comps is the most useful skill in this whole process. The goal is three to ten properties that sold in the prior year, in your neighborhood or nearby, that are genuinely like yours.

Start on your own CAD's website. Most Texas CADs have a property search tool where you can filter by neighborhood, square footage range, and year built. Look for "Recent Sales" or "Sales Search" in the menu. Download the results as a spreadsheet if the option is there.

For a market value protest, you want each comp's sale price. For an unequal appraisal protest, you want the assessed value per square foot. The CAD's database gives you both: the assessed value sits right on each record, and many CADs post the sale price too.

If the CAD's search tool is clunky, Redfin and Zillow both show sold prices and filter by bedroom count, square footage, and zip code. Zillow's Zestimate is not evidence. The individual closed sale prices on property pages are real transaction data.

Build a simple table once you have your comps: address, sale date, sale price, square footage, price per square foot, year built. Set it next to your property. If your assessed value per square foot beats the median of your comps, you have a strong case.

Four to six well-chosen comparables, presented clearly, beats a 40-page data dump every time.

What if you disagree with the ARB's decision?

If the ARB rules against you and you still think the value is wrong, Texas law gives you three paths under Tax Code Chapter 42 ^[1].

The first is binding arbitration. If your property is appraised at $5 million or less and is your residence homestead, you can request arbitration through the Texas Comptroller's office within 60 days of the ARB order. The fee runs $450 to $1,550 depending on property value, and you get it back if you win ^[2]. An independent arbitrator, not the ARB or the CAD, decides the case.

The second is district court. You can sue the appraisal district in state district court within 60 days of the ARB order. This is the full legal route and usually calls for an attorney once things get complex, though you can technically represent yourself.

The third is the State Office of Administrative Hearings (SOAH), used for certain property types, mostly commercial and large-value cases.

For a homeowner fighting a residential value under $1 million, binding arbitration is the right move if the ARB shorted your evidence. It's faster than court, cheaper, and the arbitrator only weighs the evidence.

Once the appeal wraps up, a few things still need your attention, and our guide on what happens after a property tax appeal covers exactly that. If you want an easier way to pay the corrected bill, see our notes on online tax payment for property.

What exemptions should you check before or alongside your protest?

A protest cuts your appraised value. An exemption cuts your taxable value. Both lower the bill, and exemptions are often faster.

The homestead exemption is the big one. Texas homeowners who use the property as their primary residence qualify for a $100,000 homestead exemption off the school district taxable value as of 2023, raised from $40,000 by Proposition 4 in November 2023 ^[3]. If you haven't filed for it, do it now. The form is free, filed with your CAD, and it drops your taxable value every year going forward.

Over-65 and disabled-person exemptions stack on top of the homestead exemption. Qualify, and you also get a school tax freeze: your school district taxes can't rise as long as you own and live in the home.

Veterans' exemptions range from partial to 100 percent of taxable value depending on the VA disability rating ^[4].

Run both tracks at once. They hit different parts of the equation. The exemption lowers taxable value; the protest lowers appraised value, which is the ceiling taxable value can't cross ^[9].

Should you use a property tax protest service or do it yourself?

Contingency firms usually charge 25 to 40 percent of the first year's tax savings. On a $500 reduction, that's $125 to $200 handed to someone who filled out a form online in about five minutes. For most homes, doing it yourself gets the same result and keeps every dollar.

The honest case for a firm: large commercial properties or high-value homes where the potential savings run into the tens of thousands and the evidence work is genuinely complicated. At that scale, paying a cut of a big win makes sense.

For a single-family home under $1 million, the CAD's online portal, free public sales data, and two or three hours of your time do the job. The informal hearing is where the money is decided, and appraisers respond to the same comps whether they come from you or an agent.

If you want a structured way to pull comps and build your evidence package without paying a contingency firm, TaxFightBack's DIY appeal kit runs you through the same process with county-specific templates.

One thing firms would rather you not know: the ARB can't penalize you for presenting your case poorly. Weak evidence just means the value stays the same. You owe the CAD nothing extra for trying.

What are the common mistakes that get protests denied?

Missing the deadline is the only mistake you can't undo. Everything else is fixable, or at worst you lose this year and try again next year.

Filing with no evidence is the mistake that costs people the most. The ARB isn't required to cut the value just because you think it's too high. You need numbers.

Using asking prices instead of sold prices. Zillow listings are not comps. Only closed sales count. An appraiser tosses asking prices in seconds.

Picking the wrong comps. A 1,400-square-foot 1970s ranch is not comparable to a 2,800-square-foot new build two streets over. Match square footage (within 20 percent), age (within 10 to 15 years), condition, and proximity.

Arguing about your tax rate at the ARB. The ARB only sets appraised value. It has no say over tax rates, which taxing units set separately. Complaining about your bill won't move the panel.

Being rude or scattered at the hearing. ARB members are volunteers who hear dozens of cases a day. A clean, polite one-page table of three to five comps beats a 20-minute rant about government waste.

Frequently asked questions

Can I file a Texas property tax protest online without hiring anyone?

Yes. Texas Tax Code Section 41.41 gives every property owner the right to protest their appraised value directly. Your county appraisal district's website has a free online filing portal. You need your account number and PIN from your Notice of Appraised Value. No attorney, agent, or paid service is required at any stage of the process.

What is the Texas property tax protest deadline in 2025?

The deadline is May 15, 2025, or 30 days after your Notice of Appraised Value was mailed, whichever is later, per Texas Tax Code Section 41.44. If you received your notice on April 20, your deadline is May 20. If you never received a notice, the default is May 15. Missing this date means forfeiting your protest rights for the 2025 tax year.

Where do I find my Texas property tax protest PIN?

Your PIN is printed on the Notice of Appraised Value the CAD mails each spring, usually in April. If you lost the notice, go to your county appraisal district's website, search for your property by address, and look for a link to request a new PIN by email or mail. Most CADs issue a replacement PIN within one to three business days.

What happens if I miss the May 15 protest deadline in Texas?

You almost certainly lose your right to protest for that tax year. Texas Tax Code Section 41.44(b) allows late protests only in very narrow circumstances, such as a court-determined incapacity or a documented failure by the CAD to send the required notice. These exceptions are genuinely rare. Set a calendar reminder the moment your notice arrives.

How much can I realistically expect to save by protesting my Texas property tax?

It varies widely by county and by how far off your assessment is. Reported reduction rates for protesting homeowners commonly land near half of residential cases, though it swings by district and year. The dollar savings depend entirely on the gap between the CAD's value and what your evidence supports, multiplied by your local tax rate (typically 1.5 to 2.5 percent of assessed value in most Texas cities).

Can I protest my Texas property taxes if the appraised value didn't change this year?

Yes. Even if your value is unchanged from last year, you can still protest by May 15 on the grounds that the existing value exceeds market value or is unequally appraised relative to comparable properties. You won't receive a Notice of Appraised Value if the value didn't change, but the May 15 deadline still applies and you can file through the CAD's online portal using your account number.

What is the difference between appraised value and taxable value in Texas?

Appraised value is the CAD's estimate of your property's market value as of January 1. Taxable value is what you're actually taxed on, which is appraised value minus any exemptions (like the homestead exemption). Protesting lowers your appraised value. Applying for exemptions lowers your taxable value. Doing both gives you the biggest reduction to your tax bill.

How do I look up comparable sales for a Texas property tax protest?

Start on your county appraisal district's website under "Sales Search" or "Recent Sales." Most Texas CADs publish recent transaction data. You can also use Redfin or Zillow's sold listings filtered to your neighborhood, similar square footage, and properties sold in the 12 months before January 1 of the tax year. Use closed sale prices only, not listing prices.

Is an informal hearing the same as an ARB hearing in Texas?

No. The informal hearing is a one-on-one meeting with a CAD staff appraiser before your formal case goes to the Appraisal Review Board. It's not sworn testimony and has no official record. Many protests settle here. If you don't reach an agreement, the formal ARB hearing proceeds. You can skip the informal hearing if you want to go straight to the ARB, but settling early saves time.

What evidence is most persuasive at a Texas ARB hearing?

Recent closed sales of genuinely comparable properties (same neighborhood, similar size, age, and condition, sold in the prior 12 months) are the most persuasive evidence. For an unequal appraisal argument, a table showing that your assessed value per square foot is higher than the median of comparable assessed properties on the CAD's own rolls is extremely effective. Interior and exterior photos of condition issues help supplement the comp data.

Can the ARB raise my property value after a protest?

No. The ARB can only confirm the CAD's value or reduce it. It cannot raise your value above the value on the appraisal records as of January 1. Filing a protest carries no risk of a higher assessment. This is one of the most common misconceptions that keeps homeowners from filing.

What do I do if the ARB rules against me?

You have two main options. Binding arbitration through the Texas Comptroller's office is available within 60 days for homestead properties valued at $5 million or less; the filing fee ranges from $450 to $1,550 and is refunded if you win. The alternative is filing suit in state district court within 60 days of the ARB order. Most residential owners use arbitration because it's faster and far cheaper than litigation.

Does Texas have a homestead exemption and how does it interact with a protest?

Yes. Texas homeowners who use the property as their primary residence can claim a homestead exemption worth $100,000 off the school district taxable value as of 2023, under Proposition 4. File the exemption form free with your CAD. Exemptions and protests work independently: the exemption reduces your taxable value, and a successful protest reduces your appraised value. You should pursue both simultaneously.

How long does the Texas property tax protest process take from filing to resolution?

Informal settlements typically happen within two to six weeks of filing, often before June. If you proceed to a formal ARB hearing, hearings are usually scheduled between May and July. Most residential cases are fully resolved, with a final ARB order issued, by late summer. Binding arbitration or district court proceedings, if pursued, can add another three to nine months.

Sources

1. Texas Legislature Online, Texas Tax Code Chapter 41 (Taxpayer Protest): Texas Tax Code Section 41.41 grants property owners the right to protest appraised value; Section 41.44 sets the May 15 or 30-day deadline; Section 41.43 governs unequal appraisal protests and the 10 percent threshold; Chapter 42 governs post-ARB remedies including arbitration.
2. Texas Comptroller of Public Accounts, Property Taxpayer Remedies: The Texas Comptroller publishes the Property Taxpayer Remedies guide and the directory of all 254 appraisal districts; binding arbitration fee range of $450 to $1,550 is cited in the Comptroller's arbitration guidance.
3. Texas Comptroller of Public Accounts, Proposition 4 Homestead Exemption Increase (2023): Proposition 4, approved by Texas voters in November 2023, raised the homestead exemption for school district taxes from $40,000 to $100,000.
4. Texas Comptroller of Public Accounts, Veterans Exemptions: Texas veterans with VA disability ratings qualify for partial to full property tax exemptions depending on the disability percentage, up to 100 percent exemption for total disability.
5. Harris County Appraisal District (HCAD), Online iFile Protest System: Harris County uses an iFile system for online property tax protests; the portal accepts evidence uploads up to 10 MB per file.
6. Travis Central Appraisal District, Online Protest Filing: Travis CAD provides an online protest portal for Austin-area property owners to file and upload evidence electronically.
7. Bexar Appraisal District, Property Owner Resources: Bexar County (San Antonio) appraisal district provides an online protest filing portal at bcad.org.
8. Texas Legislature Online, Texas Tax Code Section 41.66 (ARB Procedures): ARB procedures under Section 41.66 specify that the ARB may not increase appraised value above the value on the appraisal records as of the protest filing date.
9. Texas Comptroller of Public Accounts, Property Tax Basics Publication: The Comptroller's Property Tax Basics publication explains the distinction between appraised value and taxable value and how exemptions reduce taxable value.
10. Texas Legislature Online, Texas Tax Code Section 41.44 (Protest Deadline): Section 41.44 specifies that the protest deadline is May 15 or 30 days after the notice of appraised value is delivered, whichever is later, and describes the narrow exceptions for late filing.