Under Texas Tax Code Section 23.23, the Texas 10% homestead cap limits how much your home’s appraised value can rise in a single year once you have a residence homestead exemption on the property. The appraisal district cannot set your appraised value higher than last year’s appraised value, plus 10% of that figure, plus the market value of any new improvements. In a year when prices in your neighborhood jump 25%, the cap is what keeps your tax bill from jumping with them.
Who the Cap Protects
The cap only applies to a residence homestead, meaning a property you own and use as your principal home.1State of Texas. Texas Tax Code 11.13 – Residence Homestead Rentals, second homes, and investment properties get no protection. If you move out and rent the house to a tenant, you lose the homestead exemption and the cap goes with it.
You also have to file for it. The homestead exemption is not automatic. You submit Form 50-114 to the appraisal district in the county where the property sits.2Texas Comptroller of Public Accounts. Residence Homestead Exemption Application The general deadline is before May 1 of the tax year you want the exemption to begin, and late applications are accepted for up to two years after that date.3Texas Comptroller of Public Accounts. Property Tax Exemptions Your driver’s license or state ID address has to match the property address, and you cannot claim a homestead on any other property in or outside Texas. No application, no cap.
How the 10% Limit Is Calculated
Every year the appraisal district assigns your home two numbers: a market value and a capped appraised value. Your appraised value for tax purposes is the lesser of:4State of Texas. Texas Tax Code 23.23 – Limitation on Appraised Value of Residence Homestead
- the current market value as of January 1 of the tax year, or
- last year’s appraised value, plus 10% of last year’s appraised value, plus the market value of any new improvements.
In a flat or falling market, market value is lower and the cap does nothing. The cap earns its keep in rising markets. If last year’s appraised value was $300,000 and the district now pegs market value at $380,000, the capped number is $330,000 ($300,000 plus 10%). The district uses the $330,000. That $50,000 gap flows straight into a smaller tax bill.
The protection compounds. Each year’s capped value becomes next year’s base. When market value climbs faster than 10% a year for several years running, the spread between what your house would sell for and what you are taxed on widens every January. Homeowners who have held the same house through a long run-up sometimes carry appraised values hundreds of thousands of dollars below true market value.
Reading the Two Numbers on Your Notice
Your annual notice of appraised value shows both figures. Market value is the appraisal district’s estimate of what a willing buyer would pay in an open-market sale as of January 1.5Texas Comptroller of Public Accounts. Valuing Property Appraised value is the capped number the district actually uses. In hot years the two can be far apart, and that is normal.
Your tax bill is not calculated from the appraised value alone. The district subtracts your exemptions first. School districts must give every residence homestead a $140,000 exemption.1State of Texas. Texas Tax Code 11.13 – Residence Homestead Cities, counties, and other taxing units may adopt local-option exemptions of up to 20% of appraised value, with a $5,000 minimum.3Texas Comptroller of Public Accounts. Property Tax Exemptions Owners who are 65 or older or disabled get an additional $60,000 school district exemption on top of the general one. The chain runs: market value, then capped appraised value, then minus exemptions, then taxable value. Each step cuts what you owe.
New Improvements and Rebuilds After a Casualty
The cap protects your existing home against rising market values. It does not shield value you add. A new improvement is anything built after the most recent appraisal that increases market value and was not already in last year’s appraised value.4State of Texas. Texas Tax Code 23.23 – Limitation on Appraised Value of Residence Homestead A pool, a new bedroom, a detached garage. The full market value of the addition gets layered onto the capped value the first year it appears on the roll.
Routine maintenance is treated differently. Replacing a roof, repainting, mending a fence—these keep the house in its existing condition rather than expanding its value, and the statute excludes repairs and ordinary maintenance from the definition of a new improvement.4State of Texas. Texas Tax Code 23.23 – Limitation on Appraised Value of Residence Homestead
Rebuilding after a disaster is also protected. Section 23.23(f) provides that a structure replacing one made uninhabitable by a casualty or by wind or water damage is not treated as a new improvement. The district appraises the property as if the casualty had never happened.4State of Texas. Texas Tax Code 23.23 – Limitation on Appraised Value of Residence Homestead If the rebuild is larger or more valuable than what was lost, only the excess counts as a new improvement.
When the Cap Starts and When It Resets
The cap does not take effect the day you close. It applies starting January 1 of the tax year after the first year you qualify for the homestead exemption. Buy in March 2025, file your homestead application right away, and you qualify for the exemption in 2025; the 10% cap first applies to your 2026 appraisal. That uncapped first year is where new buyers get hit hardest, because the district uses full market value. Section 23.23(c-1) can accelerate the start date for owners who qualify under the retroactive provision in Section 11.42(f), treating them as having qualified as of January 1 of the year after they acquired the property.4State of Texas. Texas Tax Code 23.23 – Limitation on Appraised Value of Residence Homestead
The cap expires on January 1 of the first tax year in which neither the original owner nor the owner’s spouse or surviving spouse qualifies for the homestead exemption.4State of Texas. Texas Tax Code 23.23 – Limitation on Appraised Value of Residence Homestead A surviving spouse who keeps living in the home keeps both the exemption and the cap. Selling the house or moving out permanently resets everything. The new buyer begins again at current market value and waits a year for the cap to attach.
Protesting the Market Value Even When the Cap Helps
The cap limits how fast appraised value can grow, but it does nothing about an inflated market value sitting on your record. That number still matters. In the year you sell or lose the homestead exemption, the capped protection disappears and the market value becomes the appraised value. If you think the district has your market value too high, you can protest to the Appraisal Review Board.6State of Texas. Texas Tax Code 41.41 – Right of Protest
The deadline is May 15, or 30 days after the district mails your notice of appraised value, whichever is later.7State of Texas. Texas Tax Code 41.44 – Notice of Protest Common grounds include that the appraised value exceeds actual market value, that your property is appraised unequally compared to similar homes, or that an exemption was wrongly denied. Comparable sales from your neighborhood are the strongest evidence most homeowners can bring.
What a Tax Increase Does to Your Monthly Payment
Even with the cap holding growth to 10%, your taxes will rise year after year in an appreciating market. If your lender escrows for taxes, higher taxes mean a higher monthly mortgage payment. Federal rules require your servicer to run an escrow analysis at least annually and send you a statement showing any shortage, surplus, or deficiency.8Consumer Financial Protection Bureau. Escrow accounts A tax increase almost always produces a shortage. You can pay it in a lump sum or spread it over the next 12 months of payments. No interest is charged either way. If an escrow jump feels steep, a successful appraisal protest can lower the tax bill and trigger a corrected analysis.