New Hampshire DWI Costs (2026)

State-specific DWI cost calculators, law summaries, and guides for New Hampshire.

Data verified May 2026

The national average first-offense DWI total cost is $13,500. Use the calculators below to see how New Hampshire compares for your specific situation.

New Hampshire DWI Key Facts

First Offense Fine
$500 - $1,200
First Suspension
270 days
Attorney Fees (typical)
$1,500 - $5,000
SR-22 Required
3 years
IID Required (1st)
Not required
Felony Threshold
4th offense
Lookback Period
10 years
Statute of Limitations
1 year
Hardship License
Available
Expungement
Yes (10yr wait)

New Hampshire DWI Calculators

New Hampshire DWI FAQ

How much does a DWI cost in New Hampshire?

A first-offense DWI in New Hampshire typically costs between $8,000 and $20,000+ when you add up fines ($500-$1,200), attorney fees ($1,500-$5,000), SR-22 insurance, ignition interlock, and lost wages. Use the calculator above for a personalized estimate.

What is the legal DWI term in New Hampshire?

New Hampshire uses the term "DWI" for impaired driving offenses. The legal BAC limit is 0.08% for adults, with enhanced penalties at 0.16% BAC.

How long is your license suspended for a first DWI in New Hampshire?

A first-offense DWI in New Hampshire carries a license suspension of 270 days, and a second offense carries 3 years (1095 days). Whether you can keep driving on a restricted license during that time is covered below.

Is an ignition interlock device required in New Hampshire?

A first-offense DWI in New Hampshire does not automatically require an ignition interlock device, though courts may order one at their discretion. A second offense requires 12 months of IID.

Does New Hampshire require SR-22 insurance after a DWI?

Yes. New Hampshire requires SR-22 high-risk insurance filing for 3 years following a DWI conviction. Insurance premiums typically increase by 50-100%.

When does a DWI become a felony in New Hampshire?

In New Hampshire, a DWI becomes a felony on the fourth offense within 10 years. A DUI involving injury or fatality is a felony in all states regardless of offense count.

Can a DWI be expunged in New Hampshire?

New Hampshire allows DWI expungement under certain conditions, typically after a waiting period of 10 year(s) following completion of your sentence. Estimated cost: $0-$1,500.

How long does New Hampshire have to charge you with a DWI?

In New Hampshire, the state generally must file DWI charges within 1 year of the alleged offense. This deadline reflects a first-offense misdemeanor DWI; felony cases can carry a longer filing window. If you are charged, an attorney can confirm how the deadline applies to your case.

Can you get a hardship or restricted license after a DWI in New Hampshire?

New Hampshire generally offers a hardship or restricted license that can let you keep driving for work, school, or treatment during part of a DWI suspension. Eligibility depends on your offense level and the court, and an ignition interlock device is often required, so confirm the current rules for your situation.

Related Guides

Calculate Your New Hampshire DWI Cost

Get a personalized cost breakdown for your specific situation.

Start the Calculator

Get Your Free Report

Free personalized New Hampshire DWI defense and cost report, delivered by email.

Get My Free Report