The Iowa implied consent advisory form is the written and spoken warning a peace officer must give you during an OWI stop before requesting a breath, blood, or urine sample. It spells out what happens to your license if you refuse the test and what happens if you take it and fail. Your answer to that request, recorded on the form, sets in motion a license revocation that runs from 180 days to two years depending on your history and your choice.
When an Officer Can Read You the Advisory
The request itself has to be lawful before the advisory matters. Under Iowa Code § 321J.6, the officer needs reasonable grounds to believe you were operating a vehicle while impaired, plus at least one of these triggering conditions:
- You have been lawfully arrested for OWI.
- You were in a crash that caused injury or death.
- You refused the preliminary (roadside) breath test.
- The preliminary breath test showed .08 or higher, .04 or higher in a commercial vehicle, or .02 or higher if you are under 21.
- The preliminary breath test came back under .08 but the officer still has reasonable grounds to suspect drug impairment or a combination of alcohol and drugs.
Timing matters too. The officer has to make the chemical test request within two hours of the preliminary breath screening (or your refusal of it) or within two hours of arrest, whichever comes first. Miss that window, and no refusal-based revocation under § 321J.9 can follow.1Iowa Legislature. Iowa Code 321J.6 – Implied Consent to Test
What the Advisory Actually Says
Iowa Code § 321J.8 dictates the content. The officer reads the advisory aloud, and it delivers three core warnings:
- If you refuse, your driver’s license or nonresident operating privilege will be revoked under § 321J.9.
- If you take the test and it shows a prohibited alcohol concentration or the presence of a controlled substance, your license will be revoked under § 321J.12.
- If you hold a commercial driver’s license or were operating a commercial motor vehicle, a refusal or a result of .04 or higher triggers a separate disqualification under § 321.208 on top of any standard revocation.
The form has checkboxes where the officer records your answer, the date, and the time. There is a signature line acknowledging you received the warnings. Refusing to sign does not stop the revocation from taking effect.2Iowa Legislature. Iowa Code 321J.8 – Statement of Officer
Your Right to a Phone Call
Before you answer, you can call a family member or an attorney. The call cannot unreasonably delay testing, because the two-hour clock is still running, but the officer must give you a reasonable chance to reach someone. That right is printed directly on the advisory form and is one of the most overlooked protections available during an OWI stop.
Your Right to an Independent Test
Even if you submit to the officer’s test, Iowa Code § 321J.11 lets you arrange an independent test at your own expense. If you cannot get one, that does not keep the state from using the officer-directed results against you. But a second result from a lab of your choosing can matter if you later contest the revocation or the criminal charge. You can also ask for a copy of the officer’s test results.3Iowa Legislature. Iowa Code 321J – Operating While Intoxicated
Refusal Versus Failure: How Long You Lose Your License
Iowa uses a 12-year lookback. If you have a prior OWI-related revocation within that window, you fall into the repeat-offender tier.4Iowa Legislature. Legislative Guide to Operating While Intoxicated (OWI) Law
If the test shows a prohibited alcohol concentration or a controlled substance, § 321J.12 sets these periods:
- No prior revocation: 180-day revocation.
- Prior revocation within 12 years: one-year revocation.5Iowa Legislature. Iowa Code 321J.12 – Test Result Revocation
If you refuse the test, § 321J.9 applies:
- No prior revocation: one-year revocation.
- Prior revocation within 12 years: two-year revocation.6Iowa Legislature. Iowa Code 321J.9 – Refusal to Submit – Revocation
Refusal always carries a longer revocation than failure. A first-time refusal costs a full year, more than triple the 180-day revocation that follows a first-time test failure. The gap is deliberate: the legislature wants the consequence of refusing to outweigh the consequence of a bad result.
What Happens Right After You Answer
Once your answer is recorded, the officer finalizes the form. If you refused, or if your results exceed the legal limit, the officer can serve you on the spot with notice of the intent to revoke on behalf of the Iowa Department of Transportation. When that happens, the officer takes your Iowa license and gives you a temporary permit valid for 10 days. If service is not made in person, the DOT mails notice by first-class mail and the revocation takes effect 10 days after mailing.6Iowa Legislature. Iowa Code 321J.9 – Refusal to Submit – Revocation
How to Challenge the Revocation
You have 10 days from the date you receive the revocation notice to request an administrative hearing. Miss that window and the right to contest is gone. To request a hearing, complete and return the appeal section of the official notice with a written statement of your grounds, and submit it to Driver Services Appeals in person at any Iowa DMV, or by mail, email, or fax.7Iowa Department of Transportation. Appealing the Loss of Your Driving or Registration Privileges
The hearing is narrow. Under Iowa Code § 321J.13, the administrative law judge looks at whether the officer had reasonable grounds and whether you actually refused or failed the test. Hearings are usually held by phone and must be scheduled within 45 days of your request. The revocation is then either rescinded or sustained. If it is sustained, you have another 10 days to ask for a director-level review, which must be completed within 30 days. If the Department misses any of these deadlines after a timely request, the revocation is automatically rescinded.8Iowa Legislature. Iowa Code 321J.13 – Hearing on Revocation – Appeal
Getting Back on the Road
A revocation does not always mean no driving for the entire period. Iowa offers a temporary restricted license (TRL) that permits limited driving, followed by full reinstatement once the revocation ends.
Temporary Restricted License
To qualify for a TRL during an OWI revocation, you must:
- Install an ignition interlock device on every vehicle you drive. First-offense drivers keep it for the duration of the TRL. Drivers with two or more OWI offenses keep it for at least 365 days after reinstatement.
- File SR-22 proof of financial responsibility with the DOT. It has to stay in effect for two years from the start of the revocation.
- Pay the $200 civil penalty required under Iowa Code § 321J.17, online through MyMVD or at any DMV.
- Submit Form 430400 (Request for Temporary Restricted License – OWI Revocation) through the DOT’s online forms portal.
Once approved, you bring the DOT’s notice to a DMV, pass any required exams, and pay a $20 reinstatement fee plus the license fee.9Iowa Department of Transportation. Temporary Restricted License (TRL)
Full Reinstatement
After the revocation ends, reinstatement calls for the $200 civil penalty (if you did not already pay it for the TRL), a $20 reinstatement fee, and the license fee.10Iowa Department of Transportation. Operating While Intoxicated (OWI) Your SR-22 filing must remain active for two full years from the first day of the revocation, even after your license is back. If your insurer cancels or lets the SR-22 lapse during that window, the DOT is notified automatically and your driving privileges can be suspended again.11Iowa Department of Transportation. Proof of Insurance After a Suspension (SR-22)
If You Hold a Commercial Driver’s License
The alcohol threshold for operating a commercial motor vehicle is .04, half the standard limit. A refusal, or a result of .04 or higher while operating a CMV, or a refusal or prohibited-level result while operating any vehicle if you hold a CDL, triggers disqualification from commercial driving under Iowa Code § 321.208 on top of any standard revocation.2Iowa Legislature. Iowa Code 321J.8 – Statement of Officer
Blood Tests Work Differently
The U.S. Supreme Court in Birchfield v. North Dakota (2016) held that warrantless breath tests are permissible as a search incident to arrest, so Iowa can impose civil penalties like license revocation for refusing a breath test. Warrantless blood draws are treated differently because they are more intrusive, and the government cannot criminally punish you for refusing a blood test unless officers first obtain a warrant.12Justia. Birchfield v. North Dakota The administrative revocation still applies to a blood-test refusal, but the officer generally needs a warrant to compel the draw itself, and the state cannot stack criminal penalties onto that refusal.
Out-of-State Drivers
Iowa participates in the Driver License Compact. An implied consent revocation here does not stay here. The DOT reports it to your home state’s licensing agency, and your home state applies its own laws to decide what sanction to impose, which may differ from Iowa’s revocation periods. The sanction at home may not start running until your home state sends you formal written notice, so there can be a gap between the Iowa action and the consequences you face there.