Harris County property tax due dates

When property taxes are due in Harris County, TX — plus the official payment portal and what happens if you're late.

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…until full year — January 31, 2027

Instalment	Due date	Notes
Full year	January 31, 2027	Payable from October; delinquent after January 31

Pay on the county site →

Source: cao.harriscountytx.gov · verified October 17, 2026

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If you pay late

Penalty and interest begin February 1.

Bills issued in October for the year's taxes. If a due date lands on a weekend or public holiday, most counties move it to the next business day — check the county's own notice before relying on the shift.

How to pay

Online: through www.hctax.net — the only portal this county operates.
By post: mail a cheque to the treasurer's office; the postmark date usually counts, not the arrival date.
In person: the treasurer's office during business hours; bring your bill or parcel number.
Mortgage escrow: if your taxes are escrowed, the servicer pays — you still owe the difference if your escrow is short.

Common questions

When are property taxes due in Harris County, TX?

Full year: January 31, 2027.

What happens if I pay late in Harris County?

Penalty and interest begin February 1.

How do I pay Harris County property tax?

Pay online through www.hctax.net, the county's own payment portal, or by post or in person at the treasurer's office.

Is the Harris County deadline the same every year?

Bills issued in October for the year's taxes. Counties shift dates when billing is delayed, so confirm against the county source linked on this page.

What if I can't pay in full?

Most counties offer instalment plans or partial payment — ask the treasurer before the due date, not after. Once the bill is delinquent the options shrink and the fees start.

Does a late payment affect my mortgage?

Unpaid property tax is a lien on the property in most states, which your servicer may pay and then bill you for, with fees. It does not disappear.

Other TX counties

Bexar County Next: Jan 31, 2027 Dallas County Next: Jan 31, 2027 Tarrant County Next: Jan 31, 2027

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StacyApproved is an independent reference and is not a government agency. Deadlines change and exceptions apply — always confirm with your county treasurer using the official link on this page. Nothing here is tax, legal or financial advice.