You open your Texas appraisal notice and see two values that don't match. The market value reflects what the property might command in an open-market sale, while the appraised value may be the lower figure used to calculate your taxable property value. The difference can be confusing, but it isn't automatically a clerical mistake.
For a Texas homeowner, the practical question is simple: which number can you challenge, and which number affects the tax calculation? The answer depends on the January 1 valuation date, homestead protections, exemptions, and the appraisal district's evidence. Understanding those distinctions can prevent an unnecessary protest, expose an overvaluation, or keep you from missing the deadline to act.
Why Your Texas Appraisal Notice Shows Two Different Numbers
A Travis County homeowner opens an annual Notice of Appraised Value and sees $620,000 beside market value and $485,000 beside appraised value. The first reaction is usually frustration. The second is often confusion: if the county says the property is worth $620,000, why does another line show $485,000, and which figure will appear in the tax calculation?
That gap is often a built-in feature of Texas property tax administration. Texas appraisal districts generally value taxable property at market value as of January 1, but statutory limitations can affect the appraised value used for tax purposes. The Texas Comptroller's explanation of property valuation defines market value using an open-market standard involving informed parties, reasonable exposure, and no party taking unfair advantage.
The number that needs your attention
The market value line gives the district's opinion of the property's current taxable market value. The appraised value can reflect statutory caps, especially when a homestead exemption is in place. The tax calculation then accounts for exemptions and the applicable tax rate, rather than charging tax on whatever a buyer might pay in a private sale.
Practical rule: Don't protest the number that looks largest. First identify whether the district's appraised value is excessive, whether the value is unequal compared with similar properties, and whether the homestead cap has been applied correctly.
A homeowner who misunderstands the notice can make three costly mistakes:
- Challenge the wrong issue: A high tax bill may result from tax rates, exemptions, or multiple taxing units, while the protest generally focuses on the appraisal district's value.
- Ignore a valuation error: A capped value can be lower than market value, but that doesn't protect you if the capped appraised value still exceeds current market evidence.
- Miss the filing window: Texas protests are generally due by May 15 or 30 days after the appraisal notice is mailed, whichever is later, so confirm the deadline printed by your district.
Review the notice line by line, preserve the envelope or electronic delivery record, and compare the district's value with credible property evidence. INTELLI's guide to a Notice of Appraised Value is useful for identifying the fields that matter before you decide whether to protest.
Market Value Versus Appraised Value Explained
Market value is the price a property would transfer for cash or its equivalent under prevailing market conditions. Texas law assumes an open-market sale, reasonable exposure, informed buyer and seller, and no compulsion or unfair advantage. The Texas Tax Code standard in Section 23.01 makes this the foundation for appraisal district valuation.
Appraised value is the value the chief appraiser places on the property for tax administration after applying relevant statutory rules. For a qualifying Texas homestead, the appraised value can be limited by the homestead cap. Under the rule described by Fort Bend Central Appraisal District, the capped amount generally can't increase by more than 10% per year, excluding new improvements.
A simple way to remember the difference
Think of market value as the current sticker price on a car lot. It reflects what buyers and sellers are negotiating in the market. Appraised value is closer to the tax administrator's permitted value after applying the rules attached to your property, including a homestead limitation where applicable.
That analogy helps, but don't confuse appraised value with taxable value. A notice may show several related figures, and the labels vary by district. In general, exemptions reduce the value on which taxes are charged. The Sedgwick County Appraiser's explanation of assessed value describes the common calculation concept as assessed value multiplied by the tax rate, while also explaining that assessment ratios can cause assessed value to differ from market value.
The following example uses the values specified in the notice logic:
- Market value: $500,000, representing the district's opinion of open-market value.
- Capped appraised value: $420,000, reflecting a statutory limitation.
- Taxable value after exemptions: $320,000, representing the amount used after exemptions in this illustration.
The important distinction is not which value sounds more realistic. It is which value the law permits you to challenge.
What your protest actually targets
A property tax protest generally addresses the appraisal district's value opinion. You aren't appealing the fact that your local taxing units set rates, and you aren't asking the district to make your house worth less in the private market. You're presenting evidence that the district's taxable appraisal is excessive or unequal.
You can review related terminology in INTELLI's explanation of market value versus assessed value, but keep the practical priority clear: start with appraised value and taxable value on your notice, then verify how exemptions and caps were applied.
What Causes the Gap Between Market and Appraised Value
Texas homeowners usually see divergence for three reasons: the valuation date, the homestead cap, and mass appraisal. These mechanisms serve different purposes, and they can operate at the same time.
January 1 fixes the valuation snapshot
Texas appraisal districts generally appraise taxable property as of January 1. That date matters because the housing market may change between the valuation date and the arrival of the notice. A home can face weaker buyer demand, more competing listings, or recent comparable sales below the district's model assumptions after January 1, yet the notice still reflects the legally relevant snapshot.
The reverse can happen too. If demand strengthens after January 1, a homeowner might see a market value that doesn't capture later appreciation. The district isn't supposed to select whichever date produces the most convenient result. It must apply the statutory valuation date.
The homestead cap can hold appraised value down
A qualifying homestead can receive a cap that restricts annual growth in appraised value to 10% in most cases, excluding new improvements, as explained in the Texas statutory reference above. If market prices rise faster than the capped value, the two figures separate.
That gap can remain for years while the owner stays in the home. The protection is tied to the homestead and its statutory treatment, not to a promise that the property's market value has fallen. A sale can change the valuation situation because the new owner's property may be appraised under different circumstances.
Mass appraisal trades individual precision for scale
Appraisal districts evaluate large numbers of properties through mass appraisal systems. Models may draw on comparable sales, property characteristics, cost information, and other valuation inputs. A model can produce a reasonable result across a neighborhood while missing a feature that materially affects one particular property.
A unique floor plan, deferred maintenance, commercial exposure, or inaccurate record can make the district's estimate less persuasive for your home. The gap itself isn't automatically evidence of an error. The question is whether the appraised value is supported by the property's condition, location, and comparable evidence as of January 1.
| Factor | Impact on Gap | Applies To |
|---|---|---|
| January 1 valuation date | Creates a fixed snapshot that may differ from later market conditions | Taxable property generally |
| Homestead cap | Restricts annual growth in appraised value, so it can trail market value | Qualifying homesteads |
| Mass appraisal | Applies model-based estimates across many properties and may miss individual defects | Properties evaluated by the district's system |
Real Scenarios Where These Values Diverge
The difference between market value and appraised value becomes easier to understand when you examine the direction of the gap. A market value above appraised value isn't necessarily a reason to protest. An appraised value above defensible market evidence may be.
Scenario one, a protected long-term homestead
A Travis County owner has lived in the same homestead through a period of rapid neighborhood appreciation. The district lists market value at approximately $620,000 and capped appraised value at approximately $485,000. The homeowner's taxable value is lower still after applicable exemptions.
That owner may owe less tax than a new buyer with the same market value because the capped appraised value is the relevant starting point. The gap alone doesn't create a protest case. The homeowner should protest if the $485,000 appraised value still exceeds credible January 1 evidence or if comparable properties receive materially lower appraisals under similar circumstances.
Scenario two, a recent buyer after a market cooldown
A newer Pflugerville homeowner bought near the market's high point, and the district's model continues to reflect strong prior sales. The notice shows market value of approximately $455,000, while current comparable evidence supports a value closer to $410,000. In this situation, the appraised value may be excessive, even if the homeowner's purchase price was higher.
The likely tax impact is direct: taxing units calculate the bill from the taxable value, so an inflated appraisal can increase the owner's liability. A protest is viable if the homeowner can document the lower value with relevant sales, condition evidence, or a credible appraisal.
Scenario three, a property the model doesn't understand
A Round Rock property backs onto a commercial corridor and has substantial deferred maintenance. The district's model assigns a market value of approximately $390,000 and an appraised value of approximately $390,000, but a recent arm's-length sale occurred near $345,000 after buyers considered the noise, location, and repairs.
That sale can support a protest, particularly if the property condition and external influence existed on January 1. The tax impact depends on the local tax rate and exemptions, but the principle is clear: reducing the contestable value can reduce the taxable base.
| Scenario | Market Value | Appraised Value | Tax Impact | Protest Viable? |
|---|---|---|---|---|
| Long-term homestead with cap | Approximately $620,000 | Approximately $485,000 | Lower taxable base may result from the cap and exemptions | Only if the capped value is still excessive or unequal |
| Recent buyer after cooling | Approximately $455,000 | Approximately $455,000 | Potentially inflated tax base | Yes, with strong lower-value evidence |
| Unique property with defects | Approximately $390,000 | Approximately $390,000 | Potentially inflated tax base | Yes, if sale and condition evidence are persuasive |
The recurring lesson is decisive: the appraised value, not the raw market value, is the number you focus on when evaluating the tax burden.
How to Contest Your Property Tax Appraisal in Texas
Start before you gather evidence. Locate the deadline on the notice and confirm whether May 15 or 30 days after mailing, whichever is later, controls for your filing. Missing the deadline can eliminate your practical opportunity to challenge the year's value.
File on the right grounds
Texas protests usually rely on one or both of these arguments:
- Excessive appraised value: The district's value exceeds the property's market value under the January 1 standard.
- Unequal appraisal: The district appraises your property at a higher level than comparable properties, even if the district's general market estimate appears defensible.
The second ground is often overlooked. A homeowner may have a uniformity argument when similar homes receive lower appraisals, even if proving a precise market value is difficult. The Illinois Department of Revenue's property tax appeal guidance illustrates the broader distinction between challenging a valuation opinion and challenging unequal treatment. Texas procedures and terminology control in Texas, but the distinction is useful.
Build evidence that answers the appraiser's question
Emotional statements about rising taxes rarely carry a valuation hearing. Evidence does.
- Comparable sales: Select properties that resemble yours in location, size, age, condition, and features, with sales relevant to the January 1 valuation date.
- Property defects: Photograph foundation concerns, roof problems, water damage, outdated systems, access issues, or other conditions the district record misses.
- Independent valuation: Use a credible appraisal or market analysis when it addresses the relevant date and explains adjustments.
- Equity comparisons: Review the county's records for similar properties and identify a consistent pattern of lower appraisals.
Submit an organized packet. Put the requested value first, then show the strongest comparable evidence, explain material differences, and attach dated photographs or reports.
Use both hearings strategically
The informal review is your opportunity to discuss the evidence with the district's appraiser. Stay focused, ask how the district selected its comparables, identify factual errors, and request specific corrections. Don't argue from the tax bill. Argue from the property's market evidence and the statutory valuation standard.
If the issue remains unresolved, present the case to the Appraisal Review Board. Explain your requested value, identify each exhibit, and address weaknesses before the district does. Ask questions about the district's evidence and request a written decision. Depending on the circumstances, binding arbitration or litigation may remain available after the ARB decision.
A concise walkthrough of the filing and hearing sequence is available in INTELLI's guide to protesting property taxes in Texas.
When a Data-Driven Tax Reduction Service Makes Sense
DIY works when the property is ordinary, the district record is accurate, and you have time to assemble persuasive evidence. It becomes less attractive when the home has unusual characteristics, the appraisal model missed material defects, or you need to prove unequal treatment across comparable properties.
A professional service can also make sense when you don't know which number to contest. Many owners spend their effort attacking market value even though the practical issue is the taxable appraised value, an exemption, or a uniformity pattern. That mistake can weaken an otherwise legitimate protest.
Situations that justify outside help
Consider professional support when:
- Your property is difficult to compare: Commercial exposure, unusual construction, acreage, major deferred maintenance, or mixed-use characteristics can defeat a basic online comparison.
- Your evidence is incomplete: A consultant can organize public appraisal district records with private market information, condition documentation, and equity comparisons.
- Your deadline is close: Filing correctly and presenting a focused case matters more than submitting a long emotional explanation.
- A prior protest failed: A new strategy may require identifying what the first submission omitted, whether the wrong ground was used, or how the district's comparables can be challenged.
INTELLI uses licensed property tax consultants and employs a data first approach using public and private data. Its work can include appraisal district records, private market records, condition information, and equity analysis. The service uses a results-based structure, so the homeowner's cost is tied to a successful tax reduction rather than an upfront payment.
That fee still deserves scrutiny. Compare it with paying the full amount of an inflated tax bill, spending hours preparing weak evidence, or missing a deadline. The right question isn't whether professional representation has a cost. It's whether the likely value of a properly prepared protest justifies that cost for your property.
Your Decision Framework for This Tax Year
Use the notice as a decision document, not as a bill you accept. Work through three checkpoints in order.
Checkpoint one, test the appraised value
Compare the appraised value with credible January 1 evidence. Look for recent comparable sales, meaningful condition differences, and features the district may have overlooked. A lower market value claim can succeed even when the property is worth more than the purchase price, provided the district's value remains above the best available evidence.
Checkpoint two, verify the cap and exemptions
Confirm that the homestead exemption appears correctly and that the capped appraised value reflects the applicable statutory limitation. Check whether the property record shows accurate ownership, classification, improvements, and exemption status. A valuation protest won't fix an exemption that was never filed, so treat those as separate tasks.
Checkpoint three, test uniformity
Compare similar properties in the same area. Don't stop at one neighbor's value. Look for a defensible pattern involving comparable size, quality, age, location, and condition. If similar properties receive lower appraisals, preserve the records and explain why the comparison is fair.
Use this practical scoring rubric:
- Strong case: The appraised value exceeds credible evidence, the property has documented defects or unique disadvantages, or comparable properties show a consistent lower appraisal pattern.
- Possible case: The evidence is incomplete, but the district record contains clear factual errors or questionable comparables.
- Weak case: The only argument is that taxes are burdensome, market value is higher than appraised value, or a neighbor's property has a different exemption.
Time changes the decision. If the deadline is close, file the protest first and continue improving the evidence. If the potential reduction is modest and your records are strong, a focused DIY filing may be reasonable. If the gap is substantial, the property is complex, or the uniformity evidence requires analysis, professional help is more practical.
Pull out your notice today, identify the appraised value, verify the cap and exemptions, and compare the figure with January 1 evidence before the deadline passes. Doing nothing leaves the district's valuation in place and gives you no opportunity to correct an excessive or unequal appraisal.
INTELLI offers licensed property tax consultants who use public and private data to evaluate the difference between market value and appraised value, prepare evidence, and manage the Texas protest process. Visit INTELLI to review your options and start with a data first assessment before your filing deadline.