Why is my tax-assessed or appraisal-district value different from market value?
Reviewed August 2026 by Shannon Miles Group
County appraisal-district values exist for property-tax purposes, not to predict what a property would sell for. They can differ from market value because the purpose, timing, and data are different. Exemptions can change the taxable value, market conditions change between valuation dates, and the district's records may not reflect the property's actual condition or features. Market value, appraised value, assessed value, and taxable value are distinct concepts.
Why the county's number is not your sale price.
Every year, your county appraisal district assigns a value to your property, and your property tax bill is calculated from it. Many homeowners assume that number is the county's opinion of what the home would sell for. It is not necessarily that, and treating it as one causes a lot of confusion.
The main reasons the numbers differ
Different purpose
The appraisal district's job is to distribute the property tax burden fairly and uniformly. It is not trying to forecast what your home would sell for. Uniformity across similar properties can matter more than a precise market estimate.
Different timing and data
The district values your property as of January 1 each year and works from sales and records available at that time. Market conditions can shift substantially between that date and today, and the district's records may not capture recent updates, deferred maintenance, or interior condition.
Exemptions change the taxable number
In Texas, a homestead exemption, over-65 exemption, disabled-veteran exemption, or agricultural valuation can reduce the taxable value of your property. The number on your tax bill may therefore sit well below the appraised value, and neither is a market value prediction.
Records lag reality
The district may not know about a new shop, a remodeled kitchen, or, just as often, the condition issues a buyer would see walking through. What is on the record is not always what is on the ground.
It helps to keep four terms straight. Market value is the likely agreement price between an informed buyer and seller today. Appraised value is what the appraisal district determines for tax purposes. Assessed value is the appraised value after certain caps and limitations apply. Taxable value is the assessed value after exemptions are subtracted, and it is the number your taxes are actually calculated from. These are related but distinct, and it is normal for them not to match.
A county value above or below a likely sale price is not evidence that the market or the county is wrong. It reflects two systems doing different jobs. If you disagree with your appraisal-district value, Texas has an established protest process through the appraisal review board. We are happy to explain how that works in general terms, but for advice about your specific situation, talk to the appraisal district or a qualified tax professional.
Rural values and the ag exemption.
In Northeast Texas, the gap between county value and market value is often largest on acreage. Land under an agricultural valuation is appraised on its productive use rather than its market value, which can put the taxable value far below what the property would sell for. That is working as designed: it keeps productive farmland affordable to farm.
For homes and small tracts, the county's records may not track the improvements buyers care about, such as shops, barns, water sources, or fencing. If you are considering an offer, pricing a listing, or planning a protest, it is wise to compare the county's number against current market evidence rather than assuming either one is a sale price.
Putting the county value in its place.
- Do not price from your tax statement. The county value is for taxes. A listing price should be built from current comparable sales and market conditions.
- Understand which number you are looking at. Appraised, assessed, and taxable values answer different questions. Make sure you know which one is on the paper in front of you.
- Exemptions matter for taxes, not sale price. An ag valuation or homestead exemption can lower your tax bill without changing what a buyer would pay for the property.
- Talk to the right professionals. For market questions, talk to a local agent. For protest strategy or personal tax questions, consult the appraisal district or a qualified tax professional.
More answers you might find useful.
How is my home's market value determined?
What is a comparative market analysis (CMA)?
What is the difference between a CMA and an appraisal?
Can an online home-value estimate accurately price my property?
We can help you make sense of the numbers.
For market questions, the Shannon Miles Group can show you current evidence. For tax questions, the appraisal district and qualified tax professionals are the right source. Call or visit us at 2322 Lamar Ave. in Paris.