New Hampshire DWI Laws & Penalties (2026)
New Hampshire uses DWI terminology. First offenders generally do not face jail time unless aggravating factors are present.
New Hampshire DWI Penalties
1st Offense
2nd Offense
BAC Limits in New Hampshire
📜 Expungement
DWI expungement is available in New Hampshire. Waiting period: 10 years.
Expungement Guide →💰 Estimated Total Cost
A first DWI in New Hampshire typically costs $10,000-$25,000+ including fines, attorney, classes, IID, and insurance increases.
Calculate Your Cost →Find a DWI Attorney in New Hampshire
Connect with experienced DWI lawyers in Manchester, Nashua, Concord, and across New Hampshire.
New Hampshire DWI Deep Dives
🚨 First Offense Penalties
Complete guide to what happens on your first DWI in New Hampshire.
🍺 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
- 📋 N.H. Rev. Stat. § 265-A:2 — New Hampshire DWI statute
- 🚗 New Hampshire 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 New Hampshire for advice specific to your situation.
New Hampshire DWI FAQ
What is the BAC limit in New Hampshire?
The legal BAC limit in New Hampshire 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 New Hampshire?
A first DWI in New Hampshire is a Misdemeanor. Penalties include None (unless aggravated) jail, $620+ in fines, and 9-month revocation license suspension.
Is an ignition interlock device required in New Hampshire?
Required for repeat offenders
Can a DWI be expunged in New Hampshire?
Yes, DWI expungement is available in New Hampshire. Waiting period: 10 years.
What is the lookback period for DWI in New Hampshire?
New Hampshire uses a 10-year lookback period to determine if an offense counts as a repeat offense.