Indiana Code Title 5. State and Local Administration § 5-17-1-3

Sec. 3. (a) A purchaser may not make any purchase or contract for the purchase of any material, equipment, goods, or supplies or the lease of equipment unless the bid, offer, proposal, estimate, or contract of any person, firm, limited liability company, or corporation offering any and all such articles for sale or equipment for lease is executed upon the forms prescribed by the state board of accounts setting forth the quantity, quality, and purchase or lease price of every article and thing proposed for sale or lease.

(b) A bid, offer, proposal, estimate, or contract submitted by a trust (as defined in IC 30-4-1-1(a)) must identify each: