
The Texas 80% Home Equity Rule: What You Can Actually Borrow
A Texas home-equity loan, HELOC, or cash-out refinance cannot push homestead debt over 80 percent of fair market value. Here is the constitutional math, and what it leaves out.
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Estimate taxes and see the financial impact of filing homestead and other exemptions.
See exactly how extra monthly payments change your payoff timeline and interest saved.
See what is left for a home-equity loan, HELOC, or cash-out refinance under the 80% limit.
Figures below come from the files behind the calculators. Median prices and appreciation are not included because this dataset does not have a source for them.
State exemption, school taxes only, tax year 2025
$1,932.26 off a $400,000 homestead, tax year 2025. State $140,000 plus the HISD 20% local exemption.
2026 adopted rate 0.8421 per $100, checked 2026-10-21. HISD tax page · HCAD jurisdiction list
Freddie Mac PMMS, week of 2026-10-15
Same survey week. Last checked 2026-10-21.
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A Texas home-equity loan, HELOC, or cash-out refinance cannot push homestead debt over 80 percent of fair market value. Here is the constitutional math, and what it leaves out.

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