New Hampshire Ignition Interlock Requirements
Helping you navigate New Hampshire’s drunk driving penalties and ignition interlock process with ease.
The New Hampshire Ignition Interlock Program
New Hampshire refers to alcohol-based driving offenses as DWI, Driving While Intoxicated. The legal blood alcohol content limit (BAC) is .08%. That state has several penalties for drunk driving; even drivers facing their first DUI charge risk having their license suspended for at least nine months. Installing an ignition interlock device may help some drivers get back on the road sooner.
New Hampshire uses tiered penalties. These penalties increase depending on the number of DWI offenses a driver has on their record. The penalties also increase under certain circumstances, like a BAC double the limit or if a minor is in the car.
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What Happens if You Get a DWI in New Hampshire?
First DWI Offense
- No jail time
- Fines of $500 to $1,200
- License suspended for nine months up to two years
- Probation for up to two years
- Completion of an alcohol and drug evaluation and the Impaired Driver Care Management Program (IDCMP)
- An SR-22 certificate is required for three years after conviction
Second DWI Offense
- 17 days to one year in jail (minimum of 60 days if there is a prior DWI offense within two years)
- Fines of $750 - $2,000
- License suspended for three years
- Probation for up to two years
- Completion of an alcohol and drug evaluation and the Impaired Driver Care Management Program (IDCMP)
- An SR-22 certificate is required for three years after conviction
- Mandatory installation of an Ignition Interlock Device (IID)
Third DWI Offense
- 180 days to one year in jail
- Fines of $750 to $2,000
- License revoked for five years
- Probation for up to two years
- Completion of an alcohol and drug evaluation and the Impaired Driver Care Management Program (IDCMP)
- An SR-22 proof-of-insurance certificate is required for three years after conviction
- Mandatory installation of an Ignition Interlock Device (IID)
What Happens if You Fail to Complete or Refuse to Submit to a DWI Test in New Hampshire?
The first time you refuse to submit to a chemical test, your license will be suspended for 180 days. If you have had a prior offense and you refuse a chemical test during the second DUI stop, your license will be revoked for two years.
How Do You Regain Driving Privileges in New Hampshire?
New Hampshire's Department of Motor Vehicles will alert you if you are required to install an Ignition Interlock Device. You may be eligible for a restricted license if you meet this criteria:
- Install a required IID from a state-approved provider in any vehicle registered to you or that you regularly drive
- Show certificate of installation at appropriate DMV location
- Add interlock restriction to your driver's license
- Pay any necessary fees
- Provide an SR-22 proof-of-insurance certificate
- Complete any other requirements issued by the court
- Complete the Impaired Driver Care Management Program (IDCMP)
There may be additional criteria to meet depending on your DWI circumstances.
The Process: What to Expect
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Consult with Legal Counsel
Seek guidance from a DUI lawyer to understand your legal options and rights following a DUI violation.
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Get an Assessment
Complete a court-ordered or voluntary assessment to evaluate your risk level and determine any required interventions.
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Obtain Proof of SR-22 Insurance, If Required
If applicable, provide proof of financial responsibility and insurance coverage with an SR-22 certificate.
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Schedule Interlock Install
Speak to our State Specialists to schedule your IID installation to meet court or state requirements.
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Regular Monitoring
Your ignition interlock usage will be regularly monitored to maintain compliance with legal requirements.
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Device Removal
After fulfilling your IID requirement and receiving approval from your monitoring authority, you can arrange to have your ignition interlock device removed at your local service center.
New Hampshire Ignition Interlock Device Cost
Expert DWI Attorneys in New Hampshire
Bosen & Associates, PLLC
Portsmouth, NH 03801
Hansen Law Offices, PLLC
Portsmouth, NH 03801
New Hampshire Public Defenders
Stratham, NH 03885
Sisti Law Office
Portsmouth, NH 03801
New Hampshire FAQs
What is an ignition interlock device and why do I need one?
An ignition interlock device is a protective measure that stops potential drunk drivers in their tracks by requiring a breath test before vehicle operation.
What are the New Hampshire ignition interlock device requirements?
Many convicted DUI offenders are ordered to install an ignition interlock device if they wish to regain driving privileges. New Hampshire requires the device to be installed by a state-approved interlock provider.
How much does an ignition interlock cost in New Hampshire?
The costs of your interlock device will vary depending on your vehicle and chosen interlock provider. Intoxalock customers will pay $22.49 to $100 deposit, as well as a $7.49 to $29.99 setup fee at installation. The monthly lease will cost $22.49 to $89.99.
What are the steps to get my ignition interlock device in New Hampshire?
New Hampshire does not require DUI offenders to have their court order at the installation appointment, but you should have been given a court order if you are going to install. Intoxalock customers can make their appointment with one of our state specialists or contact their chosen service center to make one themselves.
What information should I provide to get my ignition interlock device installed in New Hampshire?
You should bring your New Hampshire driver’s license or ID card, and the name of the registered owner.
How do I find an installation location near me in New Hampshire?
Visit the New Hampshire locations page to review all locations in New Hampshire.
When can I get my ignition interlock device removed in New Hampshire?
The customer must contact the state to request eligibility.
What information should I provide to get my ignition interlock device removed in New Hampshire?
You should bring your Certificate of Removal to your removal appointment.
What are the other DWI requirements in New Hampshire?
Check the New Hampshire state page for all DUI penalties.
Can I get financial assistance to pay for my ignition interlock device in New Hampshire?
Yes, financial assistance is available to those declared indigent by the court.
Where can I find other DWI resources such as a DWI attorney, treatment center, or SR-22 insurance in New Hampshire?
Intoxalock works with many experienced DUI attorneys. We’ve created a list of local attorneys in your state who may be able to help.
How does an ignition interlock device work?
To see how an ignition interlock device works, visit our ignition interlock page and watch our video demonstrating how to use the device.
Where can I find more information on ignition interlock devices?
To learn more about ignition interlock information, please visit our ignition interlock device page.
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Readers of this website should contact their attorney to obtain advice with respect to any particular legal matter. Only your individual attorney can provide assurances that the information contained herein – and your interpretation of it – is applicable or appropriate to your particular situation.
