July 22, 2021 00:27 Updated Follow Lobbyist Activity Reports are due two times per year. May 31st and November 30th. http://www.in.gov/ilrc/2448.htm Related articles When is the Registration deadline for Employer and Compensated Lobbyists? What is the penalty for late filing of Activity Report and Registration Statements? Is online filing of Reports and Registration Statements available? What is the fee to register a For-Profit Lobbyist? What is the fee to register a Not-For-Profit Lobbyist?