House Bill 0860 Amends the Property Tax Code. Provides that, in counties with 3,000,000 or more inhabitants, taxpayers of income producing property shall submit income and expense data annually to the chief county assessment officer on or before July 1 of each year. Provides that, in counties of fewer than 3,000,000 inhabitants, the county board may provide by ordinance or resolution that taxpayers of income-producing property shall submit income and expense data annually to the chief county assessment officer on or before March 31 of each year. Contains certain exceptions. Effective immediately.