Sales tax in Ascension Parish is 9.50% in most of the parish and 10.00% inside the City of Donaldsonville, combining Louisiana’s 5.00% state rate with local levies collected by the Ascension Parish Sales and Use Tax Authority. The state portion rose to 5.00% on January 1, 2025, which pushed every combined rate in the parish up by half a point.1Louisiana Department of Revenue. General Sales and Use Tax
Rates by Location
The total you pay depends on where the sale is delivered. As of January 1, 2025:2Louisiana Association of Tax Administrators. Ascension Parish
- Unincorporated East Ascension: 9.50% (4.50% local + 5.00% state)
- Unincorporated West Ascension: 9.50%
- City of Gonzales: 9.50%
- Town of Sorrento: 9.50%
- City of Donaldsonville: 10.00% (5.00% local + 5.00% state)
Donaldsonville is the only jurisdiction in the parish where the local portion reaches a full 5.00%, driven by its 2.50% municipal levy stacked with the School Board and West Ascension Hospital district taxes.2Louisiana Association of Tax Administrators. Ascension Parish Everywhere else, local tax comes to 4.50%, regardless of whether you are inside a town or in an unincorporated area.
What the Local Portion Covers
The 4.50% to 5.00% local rate is not a single tax. It is a stack of separate levies approved by voters for specific purposes: the Ascension Parish School Board collects 2.00% parishwide, and the remainder is divided among parish government, the sheriff, drainage districts, and, inside incorporated areas, the municipal tax that replaces the parish government and sheriff portions.3Ascension Parish Sales and Use Tax Authority. Sales and Use Tax Report Louisiana’s constitution authorizes these local levies subject to voter approval and a combined local cap per entity.4Justia. Louisiana Constitution Article VI – Local Government
What Is Taxable
Ascension Parish taxes the same base of transactions that Louisiana defines statewide: sales of tangible personal property, leases and rentals, and certain taxable services.5Louisiana State Legislature. Louisiana Code 47:301 – Definitions Local ordinances follow the state’s procedures and definitions, so there is no separate local test for what counts as a taxable sale.6Louisiana State Legislature. Louisiana Code 47:337.2 – Local Sales and Use Tax Authority
Groceries are the exception worth knowing. Louisiana exempts food for home consumption from the state sales tax, but that exemption only reaches taxes imposed by the state or by a political subdivision whose boundaries cover the entire state.7Louisiana State Legislature. Louisiana Code 47:305 – Exemptions It does not automatically extend to parish taxes, and Ascension Parish does apply its local levies to groceries that the state exempts. Restaurant meals are fully taxable at both levels.
Sellers are responsible for collecting the right amount based on the delivery location and for keeping documentation that supports any exemption claimed by a buyer.
Use Tax on Out-of-State Purchases
When you buy from an out-of-state retailer that does not collect Louisiana sales tax, you owe use tax. Individual consumers pay a flat 8.45% consumer use tax rate regardless of their actual local rate; 4% of that amount is distributed to local governments.8Louisiana Department of Revenue. Consumer Use Tax Registered dealers in Ascension Parish handle use tax differently, reporting it on their regular sales tax return through Parish E-File at the actual local rate for their location.
Opening a Sales Tax Account
Any business making taxable sales in Ascension Parish needs a local sales tax certificate from the Ascension Parish Sales and Use Tax Authority before it opens. The application calls for basic business information: legal name, federal employer identification number, a description of the business, and the names of owners or corporate officers. Once approved, the authority issues a certificate that must be displayed at the business location.9Ascension Parish, LA. Ascension Parish Code of Ordinances – Appendix C – Sales and Use Tax Get your physical address right on the application; it determines which jurisdiction’s rate you collect.
Filing and Paying
Sales tax returns are due monthly, on or before the 20th day of the month following the reporting period.10Legal Information Institute. Louisiana Administrative Code tit. 61, I-4351 – Returns and Payment of Tax Tax you collect in June is due by July 20. Some lower-volume businesses qualify to file quarterly, with the return due by the 20th of the first month after the quarter ends.
Most filing happens through Parish E-File, Louisiana’s centralized portal for submitting state and local sales tax returns from a single login.11Parish E-File. Parish E-File The system calculates tax, accepts payment electronically, and returns a confirmation. File a zero return in any month you had no taxable sales. It takes two minutes and it starts the prescription clock on that period.
Keep sales records for at least three years after December 31 of the year the taxes became due, which is the standard prescription period during which the parish can assess additional tax.12Louisiana State Legislature. Louisiana Code 47:337.67 – Prescription
Penalties and Interest for Late Returns
A return is delinquent if the Ascension Parish Sales and Use Tax Authority does not receive it by the 21st of the month following the reporting period.3Ascension Parish Sales and Use Tax Authority. Sales and Use Tax Report Two charges begin accumulating once that date passes:
- A late filing penalty of 5% of the tax due for each 30-day period (or fraction of one) the return remains unfiled, capped at 25%.13Louisiana Department of Revenue. Why Are Delinquent Penalties Assessed
- Interest from the original due date until payment, set at three percentage points above Louisiana’s judicial interest rate and capped at 1.25% per month.14Louisiana State Legislature. Louisiana Code 47:1601 – Interest
The two charges stack. Five months late on a $2,000 liability means the full 25% penalty ($500) plus five months of interest.
Refunds for Overpayments
If you overpay sales tax or collect on a transaction that was actually exempt, you can file a refund claim with the Ascension Parish Sales and Use Tax Authority. The ordinance requires a separate claim for each overpayment and each period involved, and the parish asks for supporting documents: the original invoice, any credit invoice, the original tax return, and proof of payment. Bad debt write-offs require the state’s approval letter.
The deadline is two years from the date of payment. The parish collector can also authorize a refund within that same two-year window when records clearly show an erroneous or illegal collection, without a formal protest.9Ascension Parish, LA. Ascension Parish Code of Ordinances – Appendix C – Sales and Use Tax Miss the two years and the claim is gone, so review returns periodically rather than waiting for a problem.
How Far Back an Audit Can Reach
The parish can audit returns going back three years from December 31 of the year the taxes became due.12Louisiana State Legislature. Louisiana Code 47:337.67 – Prescription File every return on time and that three-year window is the extent of your exposure. Skip a filing, and prescription on that period never starts running. The parish can assess tax on unfiled periods no matter how old. That is the practical reason for filing zero returns in slow months and keeping records for at least three full years after each filing deadline.
Remote Sellers and Online Marketplaces
Out-of-state businesses selling into Ascension Parish owe the same local tax as in-parish sellers. Under Louisiana law, a marketplace facilitator (platforms such as Amazon and Etsy) is treated as the dealer for every remote sale it facilitates into Louisiana and must collect and remit both state and local sales tax on those transactions.15Louisiana State Legislature. Louisiana Code 47:340.1 – Marketplace Facilitators
The obligation starts once retail sales delivered into Louisiana exceed $100,000 in the current or previous calendar year. After crossing that threshold, the facilitator or remote seller must register with the Louisiana Sales and Use Tax Commission for Remote Sellers within 30 calendar days.15Louisiana State Legislature. Louisiana Code 47:340.1 – Marketplace Facilitators Registration with the Commission lets a remote seller file a single combined return covering both state and local taxes rather than filing with each parish separately.11Parish E-File. Parish E-File If you sell into Ascension Parish from your own website and clear $100,000 in Louisiana sales, the registration requirement applies to you.