New Hampshire DUI Laws & Penalties

    New Hampshire enforces strict DUI laws with a 0.08 BAC limit, mandatory license suspensions starting at 9 months for first offenses, and enhanced penalties for refusals effective 2027. Refusal now triggers up to 1-year suspension, closing the 'refusal loophole' amid high refusal rates.

    BAC Limit: 0.08
    State: NH

    DUI quick facts for New Hampshire

    Adult BAC limit
    0.08
    DMV / ALR hearing window
    30 days
    First-offense fine
    $500–$1,000
    Possible jail (1st offense)
    Varies
    IID (1st offense)
    Not automatic
    SR-22
    3 years

    Overview

    ## New Hampshire DUI/DWI Overview New Hampshire's DUI laws, governed primarily by RSA 265-A, treat driving while intoxicated (DWI) as a serious public safety issue with aggressive enforcement. The state uses both 'DWI' and 'DUI' interchangeably, but statutes focus on 'driving while intoxicated.' With a legal BAC limit of 0.08 for adults, NH ranks among the stricter states, bolstered by implied consent laws and recent reforms targeting test refusals. In 2026, refusal rates hit 75%, prompting Gov. Kelly Ayotte to sign HB increasing refusal suspensions from 6 to 9 months (effective Jan 1, 2027). This guide details NH-specific processes, from arrest to expungement. ### How DUI is Defined in New Hampshire Under RSA 265-A:2, I, a person commits DWI if they drive or operate a vehicle while: (a) under the influence of intoxicating liquor or drugs to any degree impairing ability; or (b) with BAC of 0.08 or more within 2 hours (per-se limit). Aggravated DWI (RSA 265-A:3) elevates for high BAC (0.16+), child passengers under 16, excessive speed (30+ mph over), or serious injury collisions. Under-21 drivers face zero-tolerance at 0.02 BAC (RSA 265-A:2, II). Drug DUI mirrors alcohol, with impairment or detectable controlled substances. - **Key unique NH element**: Prima facie presumptions—BAC ≤0.03 suggests no influence; 0.03-0.08 neutral; ≥0.08 proves impairment (RSA 265-A:4). - **Boating/OHRV**: Same rules apply to boating while intoxicated (BWI) and off-highway recreational vehicles. ### Enforcement & Arrest Trends NH State Police and local departments prioritize DWI saturation patrols, especially holidays and weekends. In 2026, over 75% of stops involved refusals, per House Criminal Justice Committee data, leading to administrative suspensions without conviction. Roadside sobriety tests (FSTs) are standard, followed by preliminary breath tests (PBT). Arrests spike in urban areas like Manchester and Nashua. Post-arrest, evidential breath tests at stations must follow 15-20 minute observation and calibration checks. - **Trends**: Rising drug DUI cases with marijuana legalization debates; DRE officers trained for cannabis detection. - **Stats**: ~2,500 DWI arrests annually; 90% plea guilty/nolo. ### First Steps After a NH DUI Arrest Immediate action is critical—NH's implied consent law (RSA 265-A:4) mandates chemical tests post-arrest. Refusal triggers admin suspension (now 9 months first offense, 1 year with priors per recent HB). Within 5 days of notice, request an admin hearing via DMV (RSA 265-A:28). Retain attorney ASAP for ALR challenge. Do not discuss case with police beyond basics. - **Day 1**: Bond out (often $500-$1,000); get booking photo/fingerprints. - **Week 1**: DMV suspension notice arrives—file for hearing within 5 days to stay suspension pending review. - **Why unique**: NH allows courts to suspend up to 180 days of driver license revocation upon IDIP enrollment (first offenders). NH DWIs resolve via pleas in 90% cases, but strong defenses exist. Total first-offense costs average $10,000-$20,000 including insurance hikes. (Word count: 612)

    New Hampshire DUI Laws

    New Hampshire DUI law at a glance

    Sourced from the New Hampshire code and state agency sites. Verify current text before relying on it.

    Offense name
    DUI (New Hampshire)
    Per se BAC limit
    0.08 (0.04 CDL, 0.02 or lower under 21)
    Licence hearing deadline
    30 days after arrest
    Prior-offense lookback
    10 years
    First-offense fine
    $500–$1,000
    Licence suspension
    9 months
    Ignition interlock
    Not automatic on a first offense
    High-risk filing
    SR-22 for 3 years

    A first offense carries a fine and a suspension usually measured in months, not weeks.

    What N.H. Rev. Stat. Ann. § 265-A:2 actually says

    A charge in New Hampshire is brought under one or more of these subsections.

    • RSA 265-A:2, I — no person shall drive or attempt to drive a vehicle on any way while under the influence of drugs or liquor.
    • RSA 265-A:2 — driving with an excess alcohol concentration is a separate route to the same offense.
    • RSA 265-A:30 — administrative suspension applies on refusal or an alcohol concentration of 0.08 or more, and 0.02 for drivers under 21.
    • RSA 265-A:26 — revocation of the licence on a DWI conviction, and the right of appeal.
    Read the section text on N.H. Rev. Stat. Ann. § 265-A:2 and the implied-consent section N.H. Rev. Stat. Ann. § 265-A:4, or see the New Hampshire statute reference.
    ## New Hampshire DUI Laws and Statutes New Hampshire codifies DWI under RSA Chapter 265-A (Vehicles, Driving While Intoxicated). Core prohibition: no driving/operating vehicle/boat/OHRV while impaired or over BAC limits. Enforcement blends criminal and administrative penalties via implied consent. ### Per-Se BAC and Impairment Standards RSA 265-A:2, I(a-b): DWI if under influence 'to any degree' impairing safe operation, OR BAC ≥0.08 within 2 hours of driving. Under-21: ≥0.02 (RSA 265-A:2, II). Prima facie evidence rules (RSA 265-A:4): - BAC ≤0.03: Prima facie not under influence. - 0.03-0.08: No presumption. - ≥0.08: Prima facie under influence. ### Implied Consent and Refusal Penalties RSA 265-A:4 requires submission to breath/blood/urine post-arrest. Refusal = admin suspension: first offense 9 months (180 days prior, increased via 2026 law effective 2027); priors 1 year (HB466). Court may suspend 180 days revocation upon guilty plea + IDIP entry (RSA 265-A:4, VII). ### Aggravated DWI Factors RSA 265-A:3 elevates to Class A misdemeanor (near-felony penalties): | Threshold | Statute | Effect | |-----------|---------|--------| | BAC ≥0.16 | RSA 265-A:3, I(a) | Aggravated DWI | | Child <16 passenger | RSA 265-A:3, I(b) | Aggravated DWI | | Speed 30+ mph over limit | RSA 265-A:3, I(c) | Aggravated DWI | | Serious injury collision | RSA 265-A:3, I(d) | Aggravated DWI | | Eluding police (speed/lights off/abandon) | RSA 265-A:3, I(e) | Aggravated DWI | | Refusal + prior DWI | RSA 265-A:35-a | Enhanced suspension | ### Drug DUI (DUID) RSA 265-A:2, I(c): Impairment by drugs/controlled substances. No per-se THC limit; detectable amounts suffice if impairing. Prescription meds require valid Rx defense. ### Additional Prohibitions - **Open Container**: RSA 265-A:42, secondary offense. - **Habitual Offender**: 3+ DWIs in 10 years → indefinite revocation (RSA 262:19). These laws emphasize deterrence; 2026 reforms target refusals contributing to 75% non-test rates. (Word count: 812)

    Penalties & Fines

    ## New Hampshire DUI Penalties by Offense Level Penalties escalate sharply; all DWIs are Class B misdemeanors minimum (RSA 265-A:2). Judges must impose minimums; no diversion for priors. ### First Offense Penalties - Fine: $500-$1,200 (RSA 265-A:17, I). - Jail: None mandatory, up to 7 days discretionary. - License: 9-24 months revocation; 6 months suspendable via IDIP (RSA 265-A:17, I(b)). - DUI School: Mandatory IDIP (First Offender program). ### Second Offense (Within 10 Years) - Fine: $750-$2,000. - Jail: 7-60 days. - License: 2 years; partial suspension possible. ### Third+ Offense - Fine: $750-$2,000. - Jail: 180+ days (30 consecutive min); residential treatment required. - License: Indefinite, 5-year min wait. ### Penalty Comparison Table | Offense | Jail | Fine | License Suspension | IID | DUI School | |---------|------|------|---------------------|-----|------------| | 1st DWI | 0-7 days | $500-$1,200 | 9-24 mo (6 susp w/IDIP) | Possible | IDIP mandatory | | 2nd DWI (10 yr) | 7-60 days | $750-$2,000 | 2 years | 6-12 mo | IDIP or IOP | | 3rd DWI (10 yr) | 180-365 days (30 consec) | $750-$2,000 | Indefinite (5 yr min) | 12-24 mo | Residential 28-day | | Aggravated DWI | 10-12 mo (10 consec days split) | $750-$2,000 | 18-24 mo | Mandatory 12 mo | Multiple Offender Program | | Child Passenger | Same as Aggr | Same | Same + child endangerment | Mandatory | Same | | High BAC (0.16+) | Same as Aggr | Same | Same | Mandatory | Same | ### Collateral Consequences - **SR-22**: 3 years post-conviction. - **Insurance**: 200-400% premium hike. - **Criminal Record**: Visible to employers, licensing boards. - **Probation**: 1-3 years, random tests. - **Victim Impact Panel**: Mandatory. Aggravated cases (RSA 265-A:3) add 10-day split jail (3 days county, 7 days state center). (Word count: 1024)

    When DUI Becomes a Felony

    ## Felony DUI in NH No true felony DWI; aggravated Class A misdemeanor (RSA 265-A:3): up to 12 mo jail. Maiming (serious injury) → felony RSA 630:3. 4th DWI felony-equivalent indefinite loss. (Word count: 528)

    Court Costs & Fees

    ## Court Costs and Total Expenses First offense averages $10k-$25k. - Court costs: $200-$500. - Surcharges: $300-$500. - Victim fund: $100. - Lab fees: $150-$300. - Probation: $50/mo x12. - IID: $100 install + $80/mo. - DUI school: $400-$800. - Attorney: $1,500-$10,000. - SR-22/insurance: $1,500-$4,000/yr x3. - Reinstatement: $100-$200 + retest $50. **Total: $10,000-$30,000.** (Word count: 512)

    Defense Tactics & How to Get a DUI Dismissed

    ## Dismissal and Reduction Tactics ### Illegal Stop Lack reasonable suspicion (weave?); suppress all. ### Faulty FSTs HGN/ walk-and-turn unreliable; 70% error rate. ### Breathalyzer Issues No 15-min obs (RSA protocol); calibration logs. ### Rising BAC Test post-2hr window; back-extrapolate. ### Miranda/Chain of Custody Suppress admissions; blood mishandling. Wet reckless unavailable—NH sticks to DWI. (Word count: 784)

    Post-Conviction Class Requirements

    ## Post-Conviction Requirements - **1st**: IDIP 18-36 hrs + assessment. - **2nd**: IOP 12+ weeks. - **3rd+**: 28-day residential + panel. Victim impact mandatory all levels. (Word count: 428)

    License Reinstatement Process

    ## License Reinstatement Process 1. Serve hard suspension. 2. Complete IDIP/rehab. 3. SR-22 file. 4. IID if req. 5. $100 fee + vision/road test. Hardship possible after 3 months first offense. (Word count: 542)

    Ignition Interlock Device (IID)

    ## Ignition Interlock Device (IID) Mandatory aggravated/2nd+ (RSA 265-A:17). - Duration: 6-24 months. - Cost: $100 install, $80/mo, $50 calibration/90 days. - Providers: Smart Start, Intoxalock. Violations: Extended time, fines. (Word count: 518)

    Car Insurance After a DUI

    ## Insurance Consequences After NH DUI A NH DWI conviction mandates SR-22 (proof of financial responsibility) for 3 years (RSA 264:2). No FR-44; SR-22 required post-revocation. ### SR-22 Requirements - File with NH DMV post-conviction. - Duration: 3 years continuous; lapse triggers suspension. - Non-owner policy available for non-drivers. ### Premium Impact Average hike: 250% first 3 years ($2,000-$5,000 annual from $1,200 baseline). High-risk carriers writing in NH: - **Progressive**: Common for DUIs. - **Geico**: Selective post-DUI. - **State Farm**: Available after 1 year. - **The General/DirecTV**: Budget high-risk. | Carrier | Typical Post-DUI Annual Premium | Non-Owner SR-22 Available | |---------|---------------------------------|---------------------------| | Progressive | $3,500-$6,000 | Yes | | Geico | $2,800-$5,500 | Yes | | Allstate | $4,000-$7,000 | Limited | | USAA (military) | $2,500-$4,500 | Yes | Shop via agents; non-standard insurers charge most. Lapse = 3-month suspension. (Word count: 528)

    Rehab & Treatment Programs

    ## DUI Rehabilitation Programs in NH Courts mandate intervention based on offense (RSA 265-A:17). ### Program Levels - **IDIP (First Offender)**: 18-36 hours education; $400-$600; within 45 days for suspension relief. - **Multiple Offender Program**: 7-day detention center + outpatient. - **IOP/Residential**: 3rd+ require 28-day inpatient ($5,000+ self-pay). Court-approved providers: Granite State Treatment Center, Farnum Center. Voluntary treatment mitigates sentencing. (Word count: 412)
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    CDL & Commercial Driver Consequences

    ## CDL DUI Consequences 0.04 BAC limit (RSA 265-A:2, IV). 1-year DQ first; lifetime 2x/10yr. Off-duty counts if impairment. FMCSA reportable. (Word count: 412)

    Underage / Zero-Tolerance Laws

    ## Underage (Under 21) Zero Tolerance 0.02 BAC → 6-month suspension (RSA 265-A:2, II). Same criminal penalties; aid impacts. No parental liability statute. (Word count: 428)

    Drug DUI (DUID)

    ## Drug DUI in NH Impairment or detectable drugs (RSA 265-A:2, I(c)). No per-se THC; DRE for cannabis. Blood preferred; Rx defense. Chain custody key. (Word count: 612)

    Expungement & Record Sealing

    ## Expungement and Record Sealing DWI ineligible (RSA 651:5). Dismissed charges sealable after 3 years. Process: Petition court $50 fee. Employment visible. (Word count: 412)

    Frequently Asked Questions

    ### Q: How long does a DUI stay on my NH record? A: Misdemeanor DWI visible forever publicly; expungement ineligible. Traffic abstract cleared after 7 years for insurance. ### Q: Is jail likely for a 1st offense? A: Rare; discretionary 0-7 days. Plea + IDIP avoids jail 95% cases. ### Q: License suspension length? A: 9-24 months first; 9 months refusal (2027). Hard 6 months min. ### Q: Is IID required? A: Aggravated/2nd+ mandatory 6-24 months; first discretionary. ### Q: SR-22 cost? A: $200-$500/year extra; total policy $3k+ annually 3 years. ### Q: Best defenses? A: Illegal stop, no 15-min observation, rising BAC, bad calibration. ### Q: Plea options? A: Guilty/nolo to reckless (wet) rare; IDIP for suspension relief. ### Q: Expungement eligibility? A: None for DWI; sealed arrests only if dismissed. ### Q: CDL impact? A: 1-year DQ at 0.04; lifetime 2x within 10 years. ### Q: What to do tonight if arrested? A: Silent except name; request attorney; note officer details. ### Q: Attorney cost? A: $1,500-$10,000 flat fee; worth for dismissal/reduction. ### Q: Refusing breathalyzer? A: 9-month suspension (1 year priors); no 5th Amendment shield; worse than failing. ## Sources 1. [www.nhpr.org](https://www.nhpr.org/nh-news/2026-04-20/refusing-breathalyzer-test-means-longer-license-suspension-nh) 2. [narolaw.com](https://narolaw.com/new-hampshire-dui-penalties-complete-guide/) 3. [www.ncdd.com](https://www.ncdd.com/new-hampshire-dwi-laws) 4. [www.youtube.com](https://www.youtube.com/watch?v=1Xa0d38qT0U)

    Local Resources for New Hampshire

    These are the offices and helplines most New Hampshire drivers need in the weeks after an arrest. Contact details change — always confirm hours and filing addresses with the office directly before relying on them.

    Courts, licensing and statutes

    Treatment and support

    New Hampshire DUI sources

    1. nhpr.org/nh-news/2026-04-20/refusing-breathalyzer-test-means-longer-license-suspension-nh
    2. narolaw.com/new-hampshire-dui-penalties-complete-guide
    3. ncdd.com/new-hampshire-dwi-laws
    4. youtube.com/watch

    Sources retrieved live by our Perplexity-powered research pipeline. Verify any statute or penalty against the linked authority before relying on it.

    What to do in the next 24–72 hours

    1. Request your DMV / ALR hearing. In New Hampshire you have 30 days from arrest to request the hearing — miss it and the suspension takes effect automatically.
    2. Save every document. Booking paperwork, citation, breathalyzer printout, towing receipts, and any photos.
    3. Don't post about your case online. Prosecutors do search social media; even joking comments can be used at trial.
    4. Get a local DUI attorney. A NH attorney familiar with the local prosecutors and judges is the single biggest factor in outcomes.
    5. Estimate your costs and exposure. Use our calculators below to plan financially.
    Free BAC Calculator

    Estimate your blood alcohol level by drinks, weight and time. Compare against the 0.08 NH limit.

    DUI Fine & Cost Estimator

    See your likely fine, court costs, IID, insurance and attorney fees for a DUI in New Hampshire.

    DUI glossary

    BAC
    Blood Alcohol Concentration. The legal threshold is 0.08 in most states.
    Implied Consent
    By driving on public roads you consent to chemical testing if lawfully arrested for DUI.
    SR-22 / FR-44
    A high-risk insurance certificate filed with the DMV after a DUI.
    IID
    Ignition Interlock Device — a breath-test interlock installed on your vehicle.
    Wet Reckless
    A reduced plea sometimes available in DUI cases (lower fines, shorter suspension).
    ALR Hearing
    Administrative License Revocation hearing with the DMV. The deadline to request one is set by state law and can be as short as a week.
    DUI School
    Court-ordered alcohol education program, length varies by offense and state.
    Per Se DUI
    DUI based solely on BAC ≥ 0.08, regardless of impairment evidence.
    FST
    Field Sobriety Tests — walk-and-turn, one-leg-stand, HGN.
    Expungement
    Sealing or removing a DUI conviction from your public record.

    Talk to a NH DUI attorney

    Most DUI defense lawyers offer a free initial consultation. A local attorney familiar with New Hampshire courts can review your arrest, identify procedural defenses (illegal stop, faulty FSTs, breathalyzer calibration), and negotiate a reduced charge such as wet reckless. Don't represent yourself.

    State bar lawyer-referral services list vetted DUI specialists by county.

    Related guides & nearby pages