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Indiana DUI Laws

Indiana DUI Defense

What you're facing, what the deadlines are, and the questions your attorney needs to answer, specific to Indiana (IN) 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 InterlockMay be required

Implied Consent & Test Refusal

Like all 50 states, Indiana has an implied consent law, by driving on Indianaroads, you've already agreed to submit to a chemical test (breath, blood, or urine) if an officer has probable cause to believe you're impaired.

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.

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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.