Louisiana DWI Laws & Penalties (2026)
Louisiana uses the term DWI and has aggressive enforcement. A 3rd DWI is a felony with 1-5 years in prison.
Louisiana DWI Penalties
1st Offense
2nd Offense
BAC Limits in Louisiana
📜 Expungement
DWI expungement is available in Louisiana. Waiting period: 10 years for first offense.
Expungement Guide →💰 Estimated Total Cost
A first DWI in Louisiana typically costs $10,000-$25,000+ including fines, attorney, classes, IID, and insurance increases.
Calculate Your Cost →DWI Lawyers by City in Louisiana
Find a DWI Attorney in Louisiana
Connect with experienced DWI lawyers in New Orleans, Baton Rouge, Shreveport, and across Louisiana.
Louisiana DWI Deep Dives
🚨 First Offense Penalties
Complete guide to what happens on your first DWI in Louisiana.
🍺 BAC Limit
Legal BAC limits for standard, commercial, and under-21 drivers.
💰 DWI Cost
Full cost breakdown: fines, attorney, classes, insurance, and more.
🔧 Ignition Interlock Cost
IID installation, monthly fees, and provider comparison.
🚫 License Suspension
Suspension length, restricted license options, and reinstatement steps.
🧮 Cost Calculator
Estimate your total DWI cost with our interactive tool.
Official Sources & References
- 📋 La. R.S. 14:98 — Louisiana DWI statute
- 🚗 Louisiana DMV — License suspension, reinstatement, IID requirements
- 📊 NHTSA Impaired Driving Data
- 🛡️ MADD — Mothers Against Drunk Driving
DUIFinders.com is not a law firm and does not provide legal advice. Information is for general purposes only. Consult a licensed attorney in Louisiana for advice specific to your situation.
Louisiana DWI FAQ
What is the BAC limit in Louisiana?
The legal BAC limit in Louisiana is 0.08% for regular drivers, 0.04% for commercial drivers, and 0.02% for drivers under 21.
What are the penalties for a first DWI in Louisiana?
A first DWI in Louisiana is a Misdemeanor. Penalties include 10 days–6 months (2 days mandatory or 32 hours community service) jail, $300–$1,000 in fines, and 90-day suspension license suspension.
Is an ignition interlock device required in Louisiana?
Required for all offenses
Can a DWI be expunged in Louisiana?
Yes, DWI expungement is available in Louisiana. Waiting period: 10 years for first offense.
What is the lookback period for DWI in Louisiana?
Louisiana uses a 10-year lookback period to determine if an offense counts as a repeat offense.