State service guide

Iowa DUI laws: really OWI, with a 10-day appeal deadline, IID-based TRL relief, and a separate under-21 .02 rule

Iowa's DUI topic is really an OWI system with separate administrative and conviction-side license rules. The immediate practical issues are the 10-day appeal deadline, the first-revocation split between 180 days for a failed test and 1 year for refusal, and the fact that lawful driving during revocation usually runs through a temporary restricted license with ignition interlock, SR-22, and fee compliance. Iowa also keeps a distinct under-21 zero-tolerance rule at 0.02 BAC and blocks reinstatement until the drinking drivers course and evaluation or treatment requirements are satisfied.

Open official source View Iowa services
State term and BAC rules Iowa uses OWI; the adult per se limit is 0.08 BAC and the under-21 zero-tolerance rule starts at 0.02 BAC
First admin revocation A first failed-test revocation is 180 days, while a first refusal revocation is 1 year
Appeal deadline Iowa DOT says an OWI appeal must be requested within 10 days of being served by the officer
SR-22 period Proof of financial responsibility is required from the first day of the suspension or revocation and must be maintained for 2 years

Overview

What this page helps you verify

A useful Iowa DUI page should start by correcting the terminology and the structure. Iowa uses OWI, not generic DUI wording, and the state splits refusal revocations, test-result revocations, and conviction-side revocations across different sections of chapter 321J. That matters because a refusal or failed test can trigger the license loss quickly, while section 321J.4 fills in conviction-based revocation only when the person was not already revoked under sections 321J.9 or 321J.12 for that same occurrence. The other Iowa-specific detail worth surfacing early is that temporary restricted driving is heavily tied to ignition interlock, SR-22, and reinstatement compliance rather than to a simple hardship-license label.

Last reviewed: 2026-05-18. This page was manually upgraded against service-specific official sources, but requirements can still change quickly.

Usually needed

Documents and information to prepare

  • The OWI notice, revocation paperwork, and any 10-day temporary license issued by the peace officer
  • The appeal request materials and written statement explaining why you are contesting the revocation, if you plan to appeal
  • Form 430400, Request for Temporary Restricted License - OWI Revocation, if you are pursuing a TRL
  • Proof of financial responsibility filed with Iowa DOT, usually an SR-22 from an Iowa-authorized insurer
  • Certification that an approved ignition interlock device has been installed on the vehicles you operate if you seek a TRL or owe an IID requirement at reinstatement
  • Proof that you completed the required drinking drivers course and substance use disorder evaluation, treatment, or rehabilitation requirements

Typical flow

What the process often looks like

  1. Separate the Iowa DOT revocation process from the criminal OWI case immediately, because refusal or test-result action can take your license before the court case ends.
  2. If you want to contest the revocation, submit the appeal request and supporting statement within the 10-day deadline shown on the notice.
  3. If you need lawful driving during the revocation, check TRL eligibility and complete the OWI TRL form, SR-22 filing, civil-penalty payment, and ignition-interlock installation steps Iowa requires.
  4. Complete the drinking drivers course and the substance use disorder evaluation or treatment requirements, because Iowa will not reinstate until proof of completion is presented.
  5. Before driving unrestricted again, confirm that the revocation term, SR-22 period, and any continuing ignition-interlock requirement have all been cleared.

Administrative first

In Iowa, the refusal or test-result revocation often becomes the first real license problem

This is the structural point a reviewed Iowa page should explain before it lists penalties.

  • Under section 321J.9, refusing chemical testing causes a 1-year revocation if you have no previous chapter 321J revocation and 2 years if you do.
  • Under section 321J.12, a failed test causes a 180-day revocation if you have no previous chapter 321J revocation and 1 year if you do.
  • Section 321J.4 handles conviction-side revocation only when the license was not already revoked under section 321J.9 or section 321J.12 for the same occurrence.

Appeal timing

The appeal window is short, and officer-served notices usually come with only 10 days of temporary driving

This is the deadline detail most likely to change a driver's immediate next step.

  • Iowa DOT's appeals page says the deadline to appeal an OWI is 10 days from being served by the officer.
  • Sections 321J.9 and 321J.12 say the peace officer may take the Iowa license and issue a temporary license effective for 10 days when immediate notice is served.
  • Section 321J.13 says the hearing-request form must be completed and returned within 10 days of receipt of the revocation notice or the right to contest is foreclosed.

TRL and reinstatement

Iowa's restricted-driving path is an ignition-interlock and compliance lane, not a simple hardship toggle

This is the practical relief process most users actually need.

  • For an OWI revocation, Iowa DOT requires Form 430400, proof of financial responsibility, payment of civil penalties, and an approved ignition interlock device before a TRL can be issued.
  • Iowa DOT says a first-offense OWI driver who wants a TRL must have an approved ignition interlock device on all vehicles the driver operates.
  • The same Iowa DOT page says drivers with two or more OWI offenses must keep an ignition interlock device on all vehicles they operate for 365 days after reinstatement.
  • Section 321J.17 also blocks reinstatement until the $200 civil penalty is paid and proof of the drinking drivers course plus evaluation or treatment is presented.

Conviction and youth rules

The criminal penalties escalate quickly, and Iowa keeps a separate under-21 zero-tolerance track

A flat adult first-offense summary is not enough for this state.

  • Section 321J.2 makes a first OWI a serious misdemeanor with at least 48 hours in jail, a $1,250 fine, and license revocation under chapter 321J.
  • A second OWI is an aggravated misdemeanor with at least 7 days in jail, a $1,875 to $6,250 fine, and a 1-year or 2-year revocation depending on whether the case is on the test-result or refusal track.
  • A third or subsequent OWI is a class D felony with a 6-year revocation.
  • Drivers under 21 violate section 321J.2A at 0.02 BAC, and section 321J.12 sets a 60-day revocation for a first 0.02-to-below-0.08 test-result case and 90 days with a previous chapter 321J revocation.

Accuracy notes

Where people get tripped up

  • Use Iowa's OWI terminology rather than importing generic DUI phrasing from another state.
  • Keep refusal revocations under section 321J.9, test-result revocations under section 321J.12, and conviction-side revocations under section 321J.4 separate. Iowa does not reduce everything to one simple chart.
  • Keep the 10-day appeal deadline near the top. Iowa DOT's current appeals page frames it from service by the officer, while section 321J.13 uses a 10-day return window for the notice form.
  • Do not imply that reinstatement is automatic when the revocation period ends. Iowa also requires the civil penalty, SR-22, the drinking drivers course, and evaluation or treatment proof.

FAQ

Common questions

  • Is Iowa technically a DUI state or an OWI state?

    Iowa uses the term OWI. Section 321J.2 covers operating while intoxicated at 0.08 BAC or more, while under the influence, or with a controlled substance present, and section 321J.2A adds the under-21 0.02 rule.

  • How long do I have to appeal an Iowa OWI revocation?

    Iowa DOT's current appeals page says the deadline is 10 days from being served by the officer, and section 321J.13 also uses a 10-day return window for the hearing-request form that comes with the notice.

  • Can I get a temporary restricted license after an Iowa OWI?

    Often yes, if you qualify. For an OWI revocation, Iowa DOT says you must complete Form 430400, file proof of financial responsibility, pay the civil penalties, and install an approved ignition interlock device before the TRL can issue.

  • What does Iowa require before reinstating after an OWI?

    Iowa Code section 321J.17 requires the $200 civil penalty, the drinking drivers course, and evaluation or treatment proof before reinstatement, and Iowa DOT requires proof of financial responsibility from the first day of the suspension or revocation for 2 years.

  • What happens if a driver under 21 tests at 0.02 BAC in Iowa?

    Section 321J.2A makes that a violation for drivers under 21. Under section 321J.12, a first 0.02-to-below-0.08 test-result case brings a 60-day revocation, and a prior chapter 321J revocation raises it to 90 days.

Sources

Official references used for this page

Related services

More Iowa tasks people often check next

Iowa Car Insurance

Understand minimum coverage rules, proof-of-insurance expectations, and when you must show insurance to drive or register a vehicle.

Iowa Car Registration

Find out what is usually required to register a vehicle, including title documents, proof of ownership, fees, and emissions or inspection rules.

Iowa DMV Point System

Review how traffic convictions and other events can affect a driving record, suspension risk, and defensive-driving eligibility.

Iowa Driver's License

Get a clear starting point for applying for, replacing, or maintaining a standard driver license in your jurisdiction.