Atascosa County, Texas property-tax payment and appeal deadlines
Tax bills, payment rules, and valuation-review windows are controlled by the local jurisdiction and the governing state framework. The reviewed record below separates published figures from items that still require confirmation with Atascosa Central Appraisal District.
Rate context
ConfirmAtascosa County has multiple taxing jurisdictions and the official sources reviewed do not publish one verified 2026 countywide effective rate.
Statement mailing
PublishedOctober 1, 2026 or as soon thereafter as practical; the official Atascosa CAD calendar states Texas Tax Code §31.01(a) requires the tax assessor to mail bills on October 1 or soon after.
Payment deadline
Published2026 Texas property taxes are due upon receipt of the tax statement and generally become delinquent after January 31, 2027 (February 1, 2027); installment and local statutory exceptions may apply.
Valuation protest
PublishedMay 15, 2026 or the 30th day after the notice of appraised value was delivered, whichever is later; Atascosa CAD's official home page repeats this 2026 protest rule.
Do not assume a grace period.
The reviewed record identifies the payment timing above but does not establish a universal penalty schedule for this page. Late charges, interest, collection costs, tax-sale procedures, and lien or foreclosure timelines can depend on state law and the local collector’s process. If the deadline is close or a balance is delinquent, contact the tax collector directly and request the current payoff amount in writing.
Treat a published payment deadline as a hard operational date and retain your receipt or confirmation number.
From assessment to collection
01Valuation and notice
Review the assessment notice as soon as it arrives. The protest window may run from the notice date rather than from the payment due date.
02Statement and account review
Match the tax statement to the parcel or account number and confirm exemptions, assessed value, taxing units, credits, and balance.
03Payment confirmation
Use the official collector channel, then save the receipt, transaction reference, and date posted. A bank submission is not always the same as a county posting date.