The Tax Bill on the Listing Won't Be Yours

Picture a seller who bought in 2015. The market climbed over that decade, but their appraised value could only rise 10% a year thanks to the homestead cap. After ten years, market value and appraised value are two different numbers, and appraised is far behind.

That seller has been paying taxes on the smaller number. Their bill is real, but it’s theirs, not yours.

When the house sells, the county reappraises the property to market value as of the following January 1. The cap disappears and restarts with you, from the new value. A decade of accumulated protection is erased in one transaction.

Hypothetical example: A north DFW home. 2026 market value: $600,000. Seller’s capped appraised value: $455,000. Hypothetical combined rate of $2.10 per $100 ($1.05 school district + $1.05 city, county and college), built for the 2026 tax year. The rate that applies to you is published by your county appraisal district (Collin, Dallas, Denton, Tarrant or Rockwall), and that is the one to use. I’m applying only the general homestead exemption of $140,000, which under SB 4 / SB 23 applies to school district taxes (in effect from the 2025 tax year forward).

Seller (capped):

• Value used: $455,000

• School taxable: $315,000

• School tax @ $1.05/$100: $3,307

• Non-school taxable: $455,000

• Non-school tax @ $1.05/$100: $4,777

• Annual total: $8,084

• Monthly: $674

You (year after purchase):

• Value used: $600,000

• School taxable: $460,000

• School tax @ $1.05/$100: $4,830

• Non-school taxable: $600,000

• Non-school tax @ $1.05/$100: $6,300

• Annual total: $11,130

• Monthly: $928

Difference: $3,046 a year, about $254 a month. Same house. Same roof. Same day.

Estimated and simplified for illustration, this excludes local optional exemptions and your actual jurisdiction’s rates. Confirm with your lender and your appraisal district.

Here’s the part that catches people flat-footed.

At closing, your lender sets up escrow using the information in front of them, which is very often the seller’s tax bill. So year one feels fine. Comfortable, even.

Then the reappraisal lands. The county appraises at market, the new bill prints, and your escrow account is short. The lender does two things at once:

1. Raises your monthly payment to the correct amount: +$254.

2. Spreads last year’s shortfall across 12 months: $3,046 ÷ 12 = another +$254.

Result: roughly $508 more per month for a year. After that it settles back to the permanent $254.

That’s escrow shock, and it isn’t anyone’s mistake. It’s arithmetic that could have been anticipated before you signed.

1. Look up the property at the county appraisal district (Collin, Dallas, Denton, Tarrant, Rockwall). Write down two numbers: market value and appraised value. The gap between them is exactly the cap you’re about to lose.

2. Recalculate off market value, not off what the seller paid. County tax assessor-collector sites publish estimator tools.

3. Add MUD or PID if the property sits in a district. They show up as their own taxing entities.

4. Ask your lender to calculate escrow using the reappraised value, not the seller’s bill. Many will if you ask explicitly. Ask it plainly: “Are you using the seller’s bill or the reappraised value?”

5. Set aside the difference starting in month one. If it’s $254, bank it through year one and year two never touches you.

6. File Form 50-114 with your appraisal district. The deadline is April 30, and Texas allows retroactive filing up to 2 years, so if you missed it, it may still be recoverable.

7. If you’re 65 or older, or have a qualifying disability, there’s an additional $60,000 exemption (total $200,000). Ask your appraisal district which additional provisions apply to you.

With the general $140,000 exemption against school-taxable value, at the example’s $1.05 per $100 school rate that exemption is worth roughly $1,470 a year.

Not filing isn’t a small oversight, it’s money, every year, plus the loss of the 10% cap going forward.

And yes, Texas has for several years allowed a new owner to apply for the exemption in the year they purchase, rather than waiting for the next January 1. Confirm the procedure with your appraisal district, since counties handle the mechanics.

If you’re selling your current home to buy a bigger one, your budget has to run on your tax bill, not the seller’s.

I’ve watched buyers qualify comfortably on the old number and feel squeezed on the new one, and in the example above, that difference is worth roughly $39,000 of borrowing power at around 6.8% on a 30-year fixed (U.S. News, Aug. 19, 2026: 6.83%; illustrative example, rates change daily).

It works in the other direction too: some homes have a small gap between market and capped value, and those hurt far less in year two. That is negotiating intelligence. Almost nobody uses it.

This isn’t tax advice. Talk to your CPA and your appraisal district about your specific situation.

That guide already exists and it is free. It walks you through moving from one house to the next: how much equity you have today, what your payment looks like on the next house using the reappraised tax number instead of the seller’s, and whether you can move up without raising your monthly payment. Download it at VeronicaYeary.com/guiasinmobiliariasendfw.

And if you want the numbers for your own address instead of an automated internet estimate, I run them with you. Call or text me at (469) 441-8890. It costs nothing and it does not obligate you to list your house with me.

P.S. If you already have a contract in a new community and do not know which districts affect the property, send me the address. I will help you identify where to review the taxing entities and applicable documents.

Bilingual real estate service throughout Dallas-Fort Worth

Phone: (469) 441-8890

Website: VeronicaYeary.com

This article provides general information and does not constitute legal, tax, financial, or mortgage advice. Tax rates, assessments, liens, terms, payoff rules, and obligations depend on the property and district. Confirm the information with the district, city or county, appraisal district, title company, a licensed mortgage professional, and the appropriate legal or tax professionals.

Sources

Texas Tax Code, Section 23.23, Limitation on Appraised Value of Residence Homestead: https://statutes.capitol.texas.gov/Docs/TX/htm/TX.23.htm

Texas Comptroller, Property Tax Exemptions (residence homestead): https://comptroller.texas.gov/taxes/property-tax/exemptions/

Texas Comptroller, Property Tax Rates and Levies: https://comptroller.texas.gov/taxes/property-tax/rates/

Want to know how much the tax bill will jump on the house you like?

Send me the address on WhatsApp and I will tell you the tax number you would actually end up with, not the seller’s, before you make an offer. No commitment, nothing to sign.

I am Veronica Yeary, a REALTOR in Dallas-Fort Worth. The whole transaction in Spanish or English, with me, start to finish.

469-441-8890 · call, text or WhatsApp · veronica@veronicayeary.com