Indiana Code Title 6. Taxation § 6-3-4-8.2

Sec. 8.2. (a) Each person in Indiana who is required under the Internal Revenue Code to withhold federal tax from winnings shall deduct and retain adjusted gross income tax at the time and in the amount described in withholding instructions issued by the department.

(b) In addition to amounts withheld under subsection (a), every person engaged in a gambling operation (as defined in IC 4-33-2-10) or a gambling game (as defined in IC 4-35-2-5) and making a payment in the course of the gambling operation (as defined in IC 4-33-2-10) or a gambling game (as defined in IC 4-35-2-5) of:

shall deduct and retain adjusted gross income tax at the time and in the amount described in withholding instructions issued by the department.  The department's instructions must provide that amounts withheld shall be paid to the department on the twenty-fourth calendar day of each month.  Any taxes collected during the month but after the day on which the taxes are required to be paid shall be paid to the department at the same time the following month's taxes are due.  Slot machine and keno winnings from a gambling operation (as defined in IC 4-33-2-10) or a gambling game (as defined in IC 4-35-2-5) that are reportable for federal income tax purposes shall be treated as subject to withholding under this section, even if federal tax withholding is not required.

(c) The adjusted gross income tax due on prize money or prizes:

shall be deducted and retained at the time and in the amount described in withholding instructions issued by the department, even if federal withholding is not required.

(d) In addition to the amounts withheld under subsection (a), a qualified organization (as defined in IC 4-32.3-2-31(a)) that awards a prize under IC 4-32.3 exceeding one thousand two hundred dollars ($1,200) in value shall deduct and retain adjusted gross income tax at the time and in the amount described in withholding instructions issued by the department.  The department's instructions must provide that amounts withheld shall be paid to the department before the close of the business day following the day the winnings are paid, actually or constructively.