Ouachita County, LA follows the Louisiana statutory schedule. This page shows that schedule, the county's own website, and the late penalty — the county can still set its own dates, so confirm before you pay.
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…until annual bill — January 1, 2027
Instalment
Due date
Notes
Annual bill
January 1, 2027
Ad valorem taxes are delinquent after December 31; some parishes accept partial prepayments before then.
Schedule: www.legis.la.gov · Louisiana statute · not yet county-verified
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Statewide schedule — read this before you rely on it
The December 31 delinquency date is uniform, but parishes run their own notice, prepayment and installment practices. Most counties in this state follow these dates.
Taxes unpaid after December 31 are delinquent and accrue 1% per month simple interest, and the collector then notices a tax lien auction.
Parish tax collectors send notices in the fall after the millages are levied, and unpaid accounts move to the tax lien auction the following spring.
Ouachita County at a glance
Population: 157,568 (Census estimate, 2023) — the 8th largest of 64 Louisiana counties and county equivalents.
Typical tax bill: $878 a year (median for owner-occupied homes, ACS 2022 5-year estimate) — the Louisiana median is $1,087.
Land area: 610.4 sq mi, about 258.2 people per sq mi.
County website:www.oppj.org — start here for the treasurer or tax collector page.
By post: mail to the county treasurer; the postmark usually counts, not the arrival date.
In person: the treasurer's office, with your bill or parcel number.
Escrow: if your mortgage escrows taxes, the servicer pays — you still owe any shortfall.
Is this county verified?
Not yet. Ouachita County is on the queue: we publish a county's own published dates once they have been checked against the county website. Ask for it and it moves up. Until then, the Louisiana statutory schedule above is the reliable starting point.
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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.