How Texas property taxes affect mortgage payments

Follow the Texas property-tax chain

The appraisal district determines a property's value for the tax year. The taxable value for a particular taxing unit reflects that value after exemptions or other adjustments that apply to that unit. Each local government then applies its adopted rate. Because an address can sit within several jurisdictions, the complete bill may include separate amounts for a school district, county, city, hospital district, community college, or other special district.

For planning, collect three items: the appraisal district's current value record, the list of taxing units attached to the parcel, and each unit's adopted rate. Add the resulting unit-level estimates rather than treating one listed rate as the whole bill. The Comptroller directs owners to local appraisal districts for valuation and exemption questions and to the relevant taxing units or tax assessor-collector for rates and bills.

Separate homestead exemptions from value limits

A qualifying residence homestead may receive exemptions that remove part of its appraised value from taxation. As of July 13, 2026, the Texas Comptroller states that school districts must provide a $140,000 general residence-homestead exemption. Some local taxing units may offer additional exemptions, and the appraisal district decides whether an application meets the applicable requirements. A buyer should confirm eligibility and filing steps instead of subtracting an exemption before it has been granted.

Texas also limits annual increases in the appraised value of a residence homestead when the owner qualified for the exemption in the preceding and current year. The limit generally takes effect on January 1 of the tax year after qualification and does not include the market value of qualifying new improvements in the same way. This is a limit on appraised value, not a promise that the tax bill or escrow deposit cannot rise by more than 10 percent; exemptions, adopted rates, taxing-unit boundaries, and other bill components can change.

Rebuild the estimate for the buyer's ownership

The seller's tax bill can be useful history, but it may reflect exemptions, ownership dates, or an appraised-value limitation that will not apply to the buyer in the same way. Ask the appraisal district for the current record and how a change in ownership may affect the next appraisal cycle. Then request the latest adopted rates from the taxing units serving the parcel. This approach is more defensible than multiplying the purchase price by the prior owner's effective tax percentage.

Leave room for timing differences. A tax estimate used during the loan process may precede a later appraisal notice, exemption decision, or adopted rate. Review the Loan Estimate and Closing Disclosure to see which property costs are included in projected payments and escrow. If a cost is not escrowed, plan for the bill separately instead of treating its absence from the mortgage payment as a savings.

Plan for tax changes after closing

An escrow account spreads expected tax and insurance costs across monthly mortgage payments, but it does not freeze those costs. The Consumer Financial Protection Bureau explains that a change in taxes or insurance can change the escrow payment and the total amount sent to the servicer. An annual escrow statement can show projected disbursements, shortages, surpluses, and the resulting payment adjustment.

Keep the appraisal notice, exemption confirmation, tax statement, insurance renewal, and escrow analysis together. If the servicer's projection appears inconsistent with a new bill, contact the servicer and compare the underlying documents. For future purchase planning, test a higher tax assumption as a cushion, but label it as a scenario rather than an expected bill.

What to use in your mortgage decision

A Texas property-tax estimate becomes more useful when every input has an owner and a date. The appraisal district supplies the value and exemption record, local taxing units supply rates, and the servicer explains how the resulting bill is handled in escrow. Recheck those inputs before closing and after each annual notice so the total housing budget does not depend on a seller's tax history continuing unchanged.