Indiana Rent Increase Notice Requirements

No Indiana statute requires a specific rent-increase notice or caps the amount of an increase. IC 32-31-1-20 reserves rent regulation to the legislature: 'Regulation of rental rates for privately owned real property must be authorized by an act of the general assembly,' so local rent control is also barred. During a fixed-term lease, rent cannot change unless the lease allows it. For a month-to-month (tenancy-at-will) arrangement, a landlord effectively changes rent by ending the tenancy under IC 32-31-1-1 — a 'one (1) month notice in writing' — and proposing a new rate. The widely cited 30-day figure is simply this one-month termination notice, not a separate rent-increase statute; the lease otherwise governs the terms of any change.

No specific statutory penalty. A landlord cannot enforce a higher rent imposed mid-term without a lease clause allowing it; on a month-to-month tenancy the prior rent stands until a valid one-month termination notice under IC 32-31-1-1 takes effect.