Plumber License from Michigan to Indiana: Does It Transfer? (2026)

A plumbing license transfers from Michigan to Indiana by endorsement — there is no automatic reciprocity, but you do not start over. Apply to the Indiana Professional Licensing Agency (PLA) — Indiana Plumbing Commission, verify your Michigan license, and meet Indiana's endorsement requirements. Indiana Code 25-28.5-1-19 (verified current as of 2026-01-01) provides that an out-of-state journeyman plumber 'shall without examination, be granted a license' by the Indiana Plumbing Commission IF the other jurisdiction's licensing requirements were substantially equal to Indiana's when the applicant was last licensed AND that jurisdiction grants Indiana licensees the same reciprocal privilege; the statute names no partner states and no official list of qualifying states was located, so an applicant must confirm eligibility with the Commission, and anyone who does not meet the substantial-equivalence/mutuality test must be approved by the Commission and pass the Indiana journeyman plumber examination.

Indiana Code 25-28.5-1-19 (verified current as of 2026-01-01) provides that an out-of-state journeyman plumber 'shall without examination, be granted a license' by the Indiana Plumbing Commission IF the other jurisdiction's licensing requirements were substantially equal to Indiana's when the applicant was last licensed AND that jurisdiction grants Indiana licensees the same reciprocal privilege; the statute names no partner states and no official list of qualifying states was located, so an applicant must confirm eligibility with the Commission, and anyone who does not meet the substantial-equivalence/mutuality test must be approved by the Commission and pass the Indiana journeyman plumber examination.

$15–$30 (Per 860 IAC 1-1-2.1: journeyman plumber initial license fee is $15 in odd-numbered years or $30 in even-numbered years (biennial cycle; renewal $30 due before Dec 1 of each odd-numbered year). A reciprocity applicant pays the license fee with no exam; a non-reciprocity applicant also pays a $30 Commission examination fee plus the separate exam-vendor (Prove/ICC) fee. All PLA fees are non-refundable); processing No board-stated processing time in weeks; a non-reciprocity application must be reviewed and approved for eligibility by the Indiana Plumbing Commission before the applicant may register for the exam. All in.gov hosts refused direct connections during research.

Yes — plumbing licenses in different jurisdictions run independently. Keep the Michigan credential active on its own renewal and continuing-education schedule and you hold both, which is common for plumbers working near a state line.