Indiana Code Title 5. State and Local Administration § 5-11-5.5-6

(1) Except as provided in subdivision (2), if the attorney general or the inspector general intervened in the action, the person is entitled to receive at least fifteen percent (15%) and not more than twenty-five percent (25%) of the proceeds of the action or settlement, plus reasonable attorney's fees and an amount to cover the expenses and costs of bringing the action.

(2) If the attorney general or the inspector general intervened in the action and the court finds that the evidence used to prosecute the action consisted primarily of specific information contained in:

the person is entitled to receive not more than ten percent (10%) of the proceeds of the action or settlement, plus reasonable attorney's fees and an amount to cover the expenses and costs of bringing the action.

(3) If the attorney general or the inspector general did not intervene in the action, the person is entitled to receive at least twenty-five percent (25%) and not more than thirty percent (30%) of the proceeds of the action or settlement, plus reasonable attorney's fees and an amount to cover the expenses and costs of bringing the action.

(4) If the person who initially filed the complaint:

the person is not entitled to an amount under this section.

(1) the attorney general or the inspector general did not intervene in the action;  and

(2) the defendant prevails;