Indiana Code Title 10. Public Safety § 10-12-3-7

Sec. 7. (a) Benefits provided under this section are subject to IC 10-12-2-3.

(b) The basic monthly pension amount may not exceed by more than twenty dollars ($20) one-half ( 1/2 ) the amount of the employee beneficiary's average monthly wage (excluding payments for overtime and determined without regard to any salary reduction agreement established under Section 125 of the Internal Revenue Code) received during the highest paid consecutive twelve (12) months before retirement.  Salary that exceeds the monthly wage received by a police employee in the grade of trooper at the beginning of the trooper's fourth year of service may not be considered when the basic pension amount is computed.

(c) An employee beneficiary in the active service of the department who has completed twenty (20) years of service after July 1, 1937, and who continues after July 1, 1937, in the service of the department is entitled to add to the basic monthly pension amount, at retirement, the following:

However, the total of the additional amount may not exceed seventy percent (70%) of the basic pension amount.  These additional benefits are subject to the compulsory retirement age provided by the pension trust.