Washington's first DUI offense carries mandatory penalties you cannot avoid

A first DUI conviction in Washington State means a mandatory license suspension, a fine between $938 and $5,000, and up to 364 days in jail. You will also be required to complete a substance abuse assessment and treatment program, install an ignition interlock device on your vehicle for at least one year, and pay court costs and fees that typically total $1,500 to $2,500 on top of the fine. The exact penalties depend on your blood alcohol content (BAC) at the time of arrest, whether you refused a breath or blood test, and your specific circumstances.

Washington does not have a separate "DWI" category — the state uses DUI for all impaired driving charges. A first offense is prosecuted under RCW 46.61.502 (driving under the influence) or RCW 46.61.504 (driving with an excessive BAC of 0.15 or higher). The difference matters because a 0.15+ BAC triggers harsher minimum penalties even on a first offense.

Key Takeaways

  • Your driver's license will be suspended for at least 90 days if you took a breath or blood test, or one year if you refused the test.
  • Washington requires completion of a certified substance abuse assessment and any recommended treatment before you can restore your license.
  • An ignition interlock device must be installed on any vehicle you drive for a minimum of one year, at your expense.
  • The total cost of a first DUI conviction — fines, fees, treatment, and interlock — typically ranges from $4,000 to $10,000 or more.
  • You have the right to request a hearing with the Department of Licensing within 20 days of your arrest to challenge the license suspension.

License suspension and the implied consent law

Washington's implied consent law means that by driving on a public road, you have already agreed to submit to a breath or blood test if arrested for DUI. Refusing the test does not prevent a conviction — it only changes the penalties. A refusal results in a one-year license suspension, while a test result showing 0.08 BAC or higher results in a 90-day suspension for a first offense.

The suspension is separate from any criminal conviction. The Department of Licensing (DOL) handles the administrative suspension when ready after arrest, while the criminal case proceeds in court. You can request a hearing with DOL within 20 days of arrest to contest the suspension, but you must act quickly — missing this important date means the suspension takes effect automatically. At the hearing, you can challenge whether the officer had probable cause to stop you or whether the test was administered correctly.

After the suspension period ends, you must obtain an ignition interlock driver's license (IID license) before you can drive again. This requires proof that you have installed an approved interlock device on your vehicle and proof of completion of a substance abuse assessment.

Criminal penalties: fines, jail time, and probation

Washington courts impose mandatory minimum penalties for a first DUI. The fine is between $938 and $5,000. Jail time ranges from zero days (if the court suspends it) to 364 days, though most first offenders do not serve jail time if they have no prior criminal history and no aggravating factors. You will be placed on probation for a period set by the court, typically one to five years.

The sentence becomes harsher if your BAC was 0.15 or higher. In that case, the mandatory minimum fine increases to $1,500, and the court may impose longer jail time. Additional aggravating factors — such as having a passenger under 16, causing an accident, or having a prior DUI within seven years — also increase penalties.

The court will also order you to pay restitution if your DUI caused property damage or injury to another person. Court costs and fees, separate from the fine, typically add $1,500 to $2,500 to your total financial obligation.

Substance abuse assessment and treatment requirements

Before your license can be restored, you must complete a substance abuse assessment performed by a certified evaluator. This assessment determines whether you need treatment and, if so, what level of treatment. The assessment itself costs $300 to $500 and is not covered by the court fine.

If the assessment recommends treatment, you must complete it before DOL will issue an IID license. Treatment can range from a one-day DUI education class (typically $150 to $300) to outpatient counseling or inpatient rehabilitation, depending on the assessment results. The court may also order treatment as part of your criminal sentence, separate from the DOL requirement. You pay for treatment out of pocket unless you have insurance coverage.

You must provide proof of assessment completion and any recommended treatment to DOL before you can restore driving privileges. This documentation is required even if you plan to challenge the criminal conviction.

Ignition interlock device requirements and costs

Washington requires installation of an ignition interlock device (IID) on any vehicle you drive for a minimum of one year following a first DUI conviction. The device prevents the engine from starting if it detects alcohol on your breath. You must blow into the device before starting the car and periodically while driving.

The device costs $60 to $100 per month to lease and maintain, plus an installation fee of $100 to $200. Over one year, the total cost is typically $800 to $1,400. You are responsible for all costs. If you own multiple vehicles, you must install an IID on each one you drive, or you can designate a single vehicle for your use.

The IID provider reports violations — such as failed breath tests or attempts to tamper with the device — to the court and DOL. Violations can extend the required interlock period or result in additional criminal charges. You must maintain the device in working order and attend scheduled maintenance appointments.

How a DUI conviction affects your driving record and insurance

A DUI conviction remains on your Washington driving record for seven years. During this time, it is visible to insurance companies, employers, and law enforcement. Your auto insurance rates will increase significantly — expect to pay 50 to 100 percent more per month, and some insurers will drop you entirely. You may need to obtain SR-22 insurance (proof of financial responsibility), which is more expensive than standard coverage.

A second DUI within seven years of the first is treated as a second offense with much harsher penalties, including a one-year mandatory minimum license suspension, a fine of $1,500 to $5,000, and up to one year in jail. This is why the seven-year lookback period matters — even if your first conviction is old, a second arrest within seven years escalates the charges.

The conviction also affects employment, professional licensing, housing, and loan applications. Some employers conduct background checks and may not hire someone with a DUI conviction, particularly for jobs involving driving or safety-sensitive work.

Options for challenging or reducing the charge

You have the right to contest the DUI charge in court. Common defenses include challenging the legality of the traffic stop, questioning the accuracy of the breath or blood test, or arguing that the officer did not have probable cause to believe you were impaired. These defenses require evidence and informed testimony, so they typically require hiring a DUI defense attorney.

In some cases, the prosecutor may offer a plea agreement to a lesser charge, such as reckless driving (RCW 46.61.500), which carries lower penalties and does not count as a DUI conviction for purposes of future DUI charges. However, a reckless driving conviction still results in license suspension and other consequences. Whether a plea offer is available depends on the strength of the evidence against you and the prosecutor's discretion.

If you cannot afford an attorney, you can request a public defender at your first court appearance. The court will determine whether you meet the income requirements for a public defender.

Timeline from arrest to license restoration

The process typically unfolds over several months. Your license is suspended administratively within days of arrest. You have 20 days to request a DOL hearing to contest the suspension. If you do not request a hearing, the suspension takes effect automatically after 20 days. If you do request a hearing, it usually occurs within 30 to 60 days.

Your criminal case proceeds separately in district court (for misdemeanor DUI) or superior court (if felony charges are involved, which is rare for a first offense). The case may be resolved through a plea agreement or go to trial. This process typically takes two to six months, though it can take longer if the case is contested.

After conviction or a guilty plea, you must complete the substance abuse assessment and any recommended treatment before you can restore your license. This can take several weeks to several months depending on treatment availability. Once you have proof of assessment completion and an installed IID, you can explore for an IID license from DOL, which is usually issued within one to two weeks.

Frequently Asked Questions

Can I drive to work during my license suspension?

Washington does not issue a "work permit" or "hardship license" for a DUI suspension. You cannot drive at all during the suspension period, even for work or medical appointments. After the suspension ends and you obtain an IID license, you can drive any vehicle equipped with an approved interlock device.

What happens if I refuse the breath test at the police station?

Refusing the test results in a one-year license suspension instead of 90 days, and the refusal can be used as evidence against you in court. However, refusing also means there is no BAC number for the prosecutor to use as evidence of impairment. The decision to refuse is complex and depends on your specific situation — an attorney can advise you on the consequences.

Do I have to install an interlock device if I do not own a car?

If you do not own a vehicle, you still must install an IID on any vehicle you drive, including a borrowed or rented car. If you do not drive during the required interlock period, you can request a waiver from the court, but this is rarely granted. Most people install the device on a vehicle they own or have regular access to.

Can a first DUI conviction be removed from my record?

Washington does not allow DUI convictions to be sealed or expunged from your record. The conviction remains visible on your driving record for seven years and on your criminal history indefinitely. However, after seven years, it is no longer used to enhance penalties for a new DUI charge.

What if the blood test shows I was below 0.08 BAC?

You can still be convicted of DUI under RCW 46.61.502 if the prosecution proves you were impaired, even with a BAC below 0.08. The officer's observations, field sobriety tests, and other evidence can support a conviction. A BAC below 0.08 is a defense, but it is not automatic acquittal.