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Indiana DUI Laws

DUI Defense in Indiana

Statutes, Penalties, and Defense Strategies

What you are facing, the deadlines that bind you, and the questions an attorney needs to answer — under Indiana (IN) DUI law.

BAC Limit

0.08

Enhanced BAC

0.15

Higher penalties above this

Lookback Period

10 years

Prior offenses count within

First Offense Penalties in Indiana

Jail TimeUp to 60 days (up to 1 year if BAC 0.15+)
FinesUp to $500 (up to $5,000 if BAC 0.15+)
License Suspension90 days – 2 years
Ignition Interlock

Plain language

A breath-tester wired into the car ignition. The car will not start without a clean sample.

May be required

Implied Consent and Test Refusal

Indiana has an

implied consent law

Plain language

By driving on the state's roads, you have already agreed to a chemical test if an officer has probable cause to think you are impaired.

like every state. The test can be breath, blood, or urine. Refusing carries its own penalty, listed below.

Refusal Penalty

1-year license suspension

Indiana-Specific Detail

Indiana's enhanced BAC threshold of 0.15 dramatically increases the maximum jail time from 60 days to 1 year, and the maximum fine from $500 to $5,000.

Is your Indiana DUI defense on track?

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DUI Defense Playbook — $127

26 questions that change how your next attorney meeting goes, a case stage roadmap, red flag checklist, and a case progress scorecard. Instant PDF download — calibrated for Indiana DUI defendants.

Get the DUI Playbook — $127Read the Free DUI Guide

Other Indiana defense topics

Facing a different charge in Indiana? Penalty ranges, enhancements, and defense questions for related crimes:

Drug Possession in IndianaAssault in IndianaDomestic Violence in Indiana

Important: This page provides general legal information about Indiana DUI laws as of the date of publication. Laws change frequently. This is not legal advice. For guidance specific to your case, speaking with a Indiana-licensed attorney is one option, or take the free Masked Researcher’s First Read to see where your case stands.