Sales Tax in Louisiana
Back when Thomas Jefferson purchased Louisiana, he had two things in mind: the Jeffersonian Grid and “how complicated can we make sales tax?” Which Lousiana said, “bet” and took it upon themselves to make parishes and a tax system only their mother could love.
In 2026, instead of preparing for an awesome Mardi Gras event, businesses instead prepared for “less and also more” complicated sales tax.
Small disclaimer: this is not legal or financial advice. This is my opinion, and since this is sales tax, literally could be void by the time I hit “post.” Please seek actual legal advice from a company like TaxOps or TaxCSA.
2026 Law Change
In 2026 Louisiana switched to parishes to file at the State Level vs at the parishes level - thankfully! Or so one would think.
If you are a remote seller or a direct marketer, this means in systems like Avalara, you were automatically selected to have all parishes on your profile. If you are a dealer, or file the R-1029 typically you still have the options to say which parishes you’re in.
When should I register for LA?
Their economic nexus threshold is $100K; which includes exempt sales - but doesn’t include marketplace sales (so you can exclude sales on Amazon).
When to Register in a Parish if you are a dealer?
he rule to follow here is: do you have taxable sales in the parishes?
What if I am a dealer and want to flip on all my parishes?
First, go to the Parish E-File System; register for an ID, and then opt into the consolidated return.
Second, you must select ALL the parishes in Avalara. Avalara won’t know you did this consolidated return unless you add in the local taxes.
What if I’m not on Avalara?
If you’re using something like Business Central or a different system to calculate tax, you need to add in parish tax. Or at least I hope you haven’t been collecting and not remitting to those parishes prior to 2026.
What’s the catch? Because it sounds like they made this less complicated, like Texas or Arizona.
There’s a catch!
First, these are now monthly returns. Which is fine, that could add cost to compliance, but it’s not awful.
This absolutely does not remove the parish cost per return. Billing is still effectively by parish return, not as a single “one return” for Louisiana. The Louisiana Combined Return itself isn’t a separate, billable form in Avalara; it’s the mechanism that rolls up the individual parish returns and transmits them together via Parish E‑File. Liability, reporting, and billing still happen at the parish level, and customers keep the separate parish returns active so we can track and file them as needed.
Then if you’re thinking, “wait…no, fine I’ll do the parish return”, I have some additional bad news. Here’s an article from Avalara that only opens on Chrome, so don’t even think to open this in Edge because you’re headed for a 404 page: https://knowledge.avalara.com/bundle/jpg0668054391269/page/louisiana_parish_sut_goes_monthly_one_combined_pef_return_starting_october_2025.html
So good news/bad news, feels like it’s sort of headed in the right direction, but like be so for real right now about those 64 additional monthly returns.