Louisiana Sales Tax Calculator (2026) — Add or Reverse Tax
Louisiana's combined sales tax rate is 10.11% (5.00% state + 5.11% average local). Use the calculator below to add Louisiana sales tax to a price, or reverse a tax-included total to find the pre-tax price and exact tax amount.
How to use this calculator:
- Adding tax — enter a pre-tax price, pick "Add tax to price," and the calculator applies the Louisiana rate to show the tax amount and final total.
- Reversing (extracting) tax — enter a total that already includes tax, pick "Extract tax from total," and the calculator divides by 1 + the rate to isolate the pre-tax price and the exact tax paid.
- Pick the rate that matches your situation: the average combined rate is a good statewide estimate, but the state-only or maximum-local rate is more precise if you know the exact city or county.
Understanding Louisiana Sales Tax
Louisiana's state sales tax rate is 5.00%, and local jurisdictions add an average of 5.11% on top, bringing the typical combined rate to 10.11%. Rates vary by city and county — the highest combined rate in Louisiana can reach 12.00%.
Louisiana has the highest average combined state and local sales tax rate in the US, driven by high local add-on rates layered on top of a moderate state rate.
Louisiana also levies a state income tax, which shapes how much the state relies on sales tax revenue relative to other funding sources.
Groceries
Exempt from Louisiana state sales tax.
Largest city
New Orleans
State income tax
Yes
Why Reverse Sales Tax Calculation Matters
Receipts, invoices, and marketplace payouts usually show only the tax-included total — not the pre-tax price. Reversing the calculation matters for bookkeeping (separating revenue from tax collected), expense reports (reimbursing only the pre-tax cost), and price comparisons (checking what an item actually costs before Louisiana's tax is applied). Because dividing by (1 + rate) is not the same as simply subtracting the rate from the total, doing this by hand is a common source of errors — the calculator above handles it exactly.
Louisiana Taxability at a Glance
🛒 Groceries
Exempt
👕 Clothing
Taxable
💊 Prescription drugs
Exempt
History & Rate Breakdown
Louisiana's sales tax system is built around its parish structure (Louisiana's equivalent of counties) rather than the city/county model most states use. All 64 parishes, plus hundreds of municipalities and special taxing districts within them, have independent authority to levy their own local sales tax on top of the state rate.
Louisiana's roughly 10.11% average combined rate — the highest in the nation — stacks a 5% state rate (effective January 1, 2025) with local parish, municipal, and special-district taxes from 282 separate local jurisdictions that can each set their own rate. Combined rates in cities like Monroe and Sterlington in Ouachita Parish reach as high as 12.99–13.5%.
Where the Money Goes
Because so much of Louisiana's sales tax revenue is locally set and locally kept, individual parishes and municipalities have significant independent control over their own tax rates and how the revenue is spent — but that same structure is what makes Louisiana routinely rank as the most complex sales tax environment in the country for multi-location retailers.
Business Use Case: Registering & Collecting Louisiana Sales Tax
A retailer with customers across several Louisiana parishes may need to calculate and remit tax to multiple separate local collectors — not just the state — since many Louisiana parishes historically administered their own local sales tax collection independently of the Louisiana Department of Revenue, though centralized filing options have expanded in recent years.
Sales Tax Terms Glossary
Combined rate
The state sales tax rate plus any applicable local (city, county, or special district) rates — the actual rate charged at checkout in a given location.
Reverse sales tax
The process of working backward from a tax-included total to find the pre-tax price and the exact tax amount, using total ÷ (1 + rate) = pre-tax price.
Economic nexus
A sales threshold (in dollars, transaction count, or both) that obligates an out-of-state seller to collect and remit sales tax even without a physical presence in the state.
Marketplace facilitator
A platform (e.g. Amazon, Etsy, eBay) that collects and remits sales tax on behalf of third-party sellers under most states’ marketplace facilitator laws.
Real-World Example
A $500.00 purchase in Louisiana at the average combined rate of 10.11%:
- Tax amount: $500.00 × 10.11% = $50.55
- Total price: $500.00 + $50.55 = $550.55
Louisiana Sales Tax Compliance for Sellers
Remote and online sellers establish economic nexus in Louisiana once they exceed $100,000.00 in annual sales (no separate transaction-count test). Once nexus is established, a seller must register with the state, collect Louisiana sales tax at checkout, and file returns on the state's required schedule. Marketplace facilitators (Amazon, Etsy, eBay, Walmart) generally collect and remit on behalf of third-party sellers automatically.
Frequently Asked Questions — Louisiana Sales Tax
What is the sales tax rate in Louisiana?▾
Does Louisiana tax groceries?▾
Does Louisiana have a state income tax?▾
When do online sellers need to collect Louisiana sales tax?▾
How do I calculate Louisiana sales tax on a purchase?▾
How do I reverse Louisiana sales tax to find the price before tax?▾
What is the formula to back out sales tax from a receipt in Louisiana?▾
References & Sources
Rates last verified January 2026. Louisiana sales tax rates and thresholds can change — always confirm current figures with the Louisiana Department of Revenue before filing or invoicing. This tool is for estimation and educational purposes only and is not tax, legal, or accounting advice.
Jordan Hayes
Verified AuthorLead Content Editor & Personal Finance Specialist
Jordan Hayes is a personal finance content strategist with 9+ years building educational finance and health resources. He has written and fact-checked over 200 personal finance guides covering mortgage amortization, retirement planning, tax strategy, and budgeting. His work applies IRS publications, Federal Reserve data, and peer-reviewed research to make complex calculations accessible.