How car sales tax works in Louisiana
When you buy a car in Louisiana, sales tax is charged on the purchase at the combined rate of about 10.12% — the state rate plus local taxes.
On a $35,000 vehicle that is roughly $3,542. The exact local rate depends on where the car is registered, not where it is bought.
Car sales tax is usually collected when you title and register the vehicle, whether you buy from a dealer or a private seller.
Trade-ins and what is taxed
Most states, including many, let you subtract a trade-in's value from the price before tax — so trading in a car lowers the taxable amount and the tax you owe.
A few states (such as California and Virginia) tax the full purchase price regardless of trade-in. This calculator assumes the trade-in is deductible; check the rule for Louisiana if you are trading a vehicle in.
Beyond sales tax
Buying a car also brings title, registration and documentation fees, and some areas add an annual value-based excise or property tax on vehicles, which this calculator does not include.
This is a planning estimate at the average combined rate. Confirm the exact rate, trade-in rule and fees with the Louisiana Department of Revenue (revenue.louisiana.gov) or your local DMV.
Frequently asked questions
What is the car sales tax rate in Louisiana?
Car purchases are taxed at the combined sales tax rate, about 10.12% in Louisiana, made up of the 5.00% state rate plus local taxes.
Do I pay tax on the full price or after trade-in?
Most states tax the price after deducting a trade-in, which this calculator assumes. A few tax the full price — confirm the rule for Louisiana.
Where do I pay car sales tax in Louisiana?
It is normally collected when you title and register the vehicle, including on private-party sales, not only at the dealership.
Does this include registration and fees?
No. It estimates sales tax only. Title, registration, documentation fees and any annual vehicle tax are separate.