Texas Property Taxes: What San Antonio Buyers Should Know Before They Sign

Texas has no state income tax, and that is genuinely good news. The trade-off is that property taxes do a lot of the heavy lifting here, which means the tax bill is a real number in your monthly payment, not an afterthought. This guide walks through how Texas property taxes work, what the homestead exemption does for you, and how to budget for the bill so the closing table holds no surprises.

Why Texas leans on property taxes

Every state has to pay for roads, schools, and public safety somehow. Texas does it without an income tax, so the money comes largely from property taxes and sales taxes. That trade-off is why a Texas bill looks bigger than buyers from high-income-tax states expect. The system is transparent, though: the appraisal district sets the value, elected boards set the rates, and you can question both.

What your tax dollars actually fund

Your bill does not go into one pot. It splits among the local governments that serve your address: the school district, the city, the county, and special districts for things like junior colleges and flood control. In San Antonio that usually means your school district, whether Alamo Heights ISD, Northside ISD, or another, plus Bexar County and the City of San Antonio. The largest share of most Texas bills goes to local schools, which is why school boundaries matter twice: once for your kids, once for your tax rate.

The tax rate, explained in plain numbers

Texas tax rates are set per $100 of taxable value, though you will also hear the word mills, which simply means $1 for every $1,000 of value. To estimate your annual bill, take the taxable value, multiply it by the total rate, and divide by 100. For illustration: a $250,000 taxable value at a combined rate of 2% works out to $5,000 a year, or roughly $417 a month held in escrow. The exact rate is the sum of what each local government levies, and every one of those rates is public record.

Assessed value vs. market value

These are two different numbers, and buyers mix them up all the time. Market value is what a willing buyer would pay, essentially the number in your sales contract. Assessed value is the appraisal district's estimate of the home's value as of January 1 each year. The taxable value, the number the bill is calculated on, starts with the assessed value and subtracts your exemptions. The two can drift apart, and if the district's number looks high you can push back, first through an informal review and then a formal protest before the appraisal review board. I have walked clients through both.

The homestead exemption is the best tax move in Texas

If the home is your primary residence, the homestead exemption cuts the taxable value before any rate is applied. For school district taxes the exemption is now $140,000, approved by Texas voters in 2025, so a $300,000 home pays school tax on roughly $160,000 of value. Some cities and counties add smaller exemptions of their own on top. You file one application with the Bexar Appraisal District (bcad.org), and you want it in by April 30 of the year after you buy so you do not pay a full year without it. The exemption also caps how fast your appraised value can climb at 10% a year, and homeowners 65 and older, plus homeowners with disabilities, qualify for additional breaks. It is the single best reason to file early.

Your bill will move, almost every year

The appraisal district revalues homes every year, and local boards adjust rates when they set their summer budgets. The bill you see at closing is a snapshot, not a promise. The homestead exemption cushions the appraisal side with that 10% cap, but your escrow still adjusts, and your monthly payment can drift up when the new bill lands. If the district's value looks out of line with what similar homes are actually selling for, question it. I have protested values on my own properties; it is part of this business, and it pays.

Build the tax bill into your monthly budget

Lenders bundle principal, interest, taxes, and insurance into one payment and hold the tax money in escrow. Your pre-approval already includes a tax estimate, but estimates vary. Before you make an offer on a specific home, have your agent pull the current tax bill and the tax history. Ask whether the seller carried a homestead exemption, because an exemption does not transfer automatically: until your own application is on file, the bill may reflect the unexempted value. Buyers, sellers, and investors all decide better when the real tax number, not the estimate, is in the spreadsheet.

The bottom line

Texas property taxes are not a trap. They are a predictable, public, and mostly manageable part of homeownership. Understand the rate, file the homestead exemption on time, and budget the real number, and the tax bill becomes one more line item you planned for, not a surprise in the mail.

About the author: Chris Schmeis is a San Antonio real estate agent and investor with eXp Realty, a Certified Professional Real Estate Inspector in Texas, and an owner of multiple investment properties and land holdings. He writes this blog to give clients the plain-talk version of the numbers that matter.