What are the deadlines for filing?

Real Property

  • For geothermal devices, the application or Sales Disclosure Form must be completed and dated by December 31st in the calendar year for which the person wishes to obtain the deduction and filed with accompanying certification with the county auditor on or before January 5 of the immediately succeeding calendar year.
  • For solar energy systems, the deadline is the same, but IDEM certification is not necessary.

Mobile / Manufactured Home

  • For geothermal devices, the application or Sales Disclosure form must be completed, dated, and filed with accompanying certification with the county auditor during the twelve (12) months before March 31 of each year for which the person wishes to obtain the deduction.
  • For solar energy systems, the deadline is the same, but IDEM certification is not necessary.

Show All Answers

1. What type of geothermal device or solar energy system qualifies?
2. What is the deduction amount?
3. What are the deadlines for filing?